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The preparation and properties of polycrystalline Bi$_2$O$_2$Se -- pitfalls and difficulties with reproducibility and charge transport limiting parameters

T0 review · 3 major / 5 minor · reviewed 2026-08-16 · deepseek-v4-flash

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Pith's one-line read A five-step synthesis protocol makes polycrystalline Bi2O2Se reproducible enough to serve as a baseline for doping studies.

desk verdict Useful pitfalls-and-reproducibility study for Bi2O2Se polycrystals; the qualitative chemistry is solid, but the central reproducibility claim rests on one pellet per condition and a confounded pressing time. read the letter →

arxiv 2504.15227 v1 pith:P4DQ64JV submitted 2025-04-21 cond-mat.mtrl-sci

Jan Zich , Tomáš Plecháček , Antonín Sojka , Petr Levinský , Jiří Navrátil , Pavlína Ruleová , Stanislav Šlang , Karel Knížek
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Jiří Hejtmánek Vojtěch Nečina Čestmír Drašar
This is my paper · ORCID
classification cond-mat.mtrl-sci PACS 72.20.Pa81.20.Ev
keywords Bi2O2SethermoelectricmaterialspolycrystallinetransportreproducibilitythermalcyclingstabilityforeignphasessynthesisprotocolSeebeckcoefficient
verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

The paper is trying to establish why nominally identical polycrystalline Bi$_2$O$_2$Se samples show electrical conductivities spanning four orders of magnitude, and to show that most of that scatter is avoidable. It identifies four controllable sources of variability: carbonate contamination in commercial Bi$_2$O$_3$, reaction of the precursors with quartz ampoules, oxygen uptake on powder surfaces, and reduction of Bi$_2$O$_2$Se by graphite dies during compaction. It then presents a five-step preparation route that suppresses these reactions and produces undoped polycrystalline samples whose transport properties stabilize after the first thermal cycle. For the best fraction, the room-temperature conductivity is about $\sigma_{RT}\approx 500$ S·m$^{-1}$ with a Seebeck coefficient of about $-300\ \mu$V·K$^{-1}$, and these values are proposed as a baseline for future doping studies. The authors are explicit that the protocol mitigates, but does not fully eliminate, the intrinsic tendency of Bi$_2$O$_2$Se to stoichiometric drift and grain-boundary evolution under thermal cycling.

What carries the argument

The load-bearing mechanism is the five-step synthesis protocol, understood as the systematic removal of specific chemical reactions that otherwise occur at precursor surfaces, ampoule walls, powder surfaces, and die interfaces. The named central object is the set of equilibrium reactions such as $3\,\mathrm{Bi_2O_2Se}+3\,\mathrm{C}\to \mathrm{Bi_4Se_3}+2\,\mathrm{Bi}+3\,\mathrm{CO_2}$ from graphite-die pressing, and surface reactions with SeO$_2$ and CO$_2$ that form Bi$_2$SeO$_5$, Bi$_2$Se$_3$, and Bi$_2$CO$_5$; these reactions have small enthalpies per formula unit and shift with temperature and composition. Each protocol step targets one reaction: calcination removes Bi$_2$O$_2$CO$_3$, a crystallized quartz ampoule slows Bi$_4$(SiO$_4$)$_3$ formation, gradient growth and sieving remove volatile SeO$_2$ and Bi$_2$SeO$_5$ while reducing surface area, and the Si$_3$N$_4$ die eliminates carbon reduction. The work of this machinery is to convert the broad observation that transport properties scatter into a list of controllable chemical causes, each with a measurable fingerprint in the transport data.

What would settle it

Prepare three or more independent batches using the full five-step protocol, press the 35–340 μm fraction from each batch in a Si$_3$N$_4$ die under identical conditions, and measure room-temperature conductivity and cycling hysteresis; if the batch-to-batch spread of $\sigma_{RT}$ is comparable to the differences among Samples 1–4, the reproducibility claim is not established. A second check would be extending thermal cycling beyond three cycles to see whether the apparent first-cycle stabilization persists or merely slows.

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Extended reading notes

Core claim

The paper's central claim is that the large scatter of reported transport properties of polycrystalline Bi$_2$O$_2$Se is not intrinsic to the compound but is produced by a small set of identifiable side reactions: carbonate contamination of the Bi$_2$O$_3$ precursor shifts the starting stoichiometry; molten or solid precursors react with quartz ampoules to form Bi$_4$(SiO$_4$)$_3$ and leave the matrix Se-rich; ambient exposure coats powder surfaces with oxygen-derived phases that later react during compaction; and pressing in graphite dies reduces Bi$_2$O$_2$Se to Bi$_x$Se$_y$ phases that wet grain boundaries and inflate conductivity. The authors show that samples that appear phase-pure by powder XRD can still carry these invisible foreign phases. They then argue that a five-step protocol—decarbonation, low-temperature synthesis in crystallized silica ampoules, temperature-gradient growth with self-purification, sieving to a 35–340 μm fraction, and hot pressing in a Si$_3$N$_4$ die—suppresses most of these reactions and yields undoped polycrystalline material with stable transport under thermal cycling, with room-temperature $\sigma_{RT}\approx 500$ S·m$^{-1}$ and Seebeck coefficient $S\approx -300\ \mu$V·K$^{-1}$. Even with this protocol, the measured activation energy of about 0.20 eV (band gap $\approx 0.40$ eV) is roughly half the theoretical 0.85 eV, which the authors take as evidence that residual native defects and grain-boundary phases still influence transport and that full stability has not been achieved.

Load-bearing premise

The claim of improved reproducibility rests on comparing a single pellet for each processing variant, so the conclusion would collapse if uncontrolled batch-to-batch variation turned out to be as large as the differences the paper attributes to its protocol.

Editorial extensions

If this is right

  • Doping studies that hot-press or spark-plasma-sinter in graphite dies may be measuring Bi$_x$Se$_y$-wetted composites rather than doped Bi$_2$O$_2$Se, so previously reported doping effects should be re-examined with a Si$_3$N$_4$ die.
  • A powder-XRD phase-purity pattern is not sufficient evidence of a clean sample, because thin or amorphous foreign phases can control grain-boundary transport while remaining invisible to XRD.
  • If the five-step protocol becomes standard, undoped Bi$_2$O$_2$Se with $\sigma_{RT}\approx 500$ S·m$^{-1}$ and $S\approx -300\ \mu$V·K$^{-1}$ can serve as a cross-laboratory reference for comparing doping and composite studies.
  • Even with the improved protocol, the activated behavior above 500 K and the residual drift in the air-stored sample imply that truly intrinsic polycrystalline Bi$_2$O$_2$Se has not yet been prepared.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • A direct test of the reproducibility claim would be to run the full protocol on at least three independent batches and report the batch-to-batch spread of $\sigma_{RT}$; the paper itself compares one pellet per variant, so the spread remains unquantified.
  • The supplementary results on toluene-cleaned and water-milled powders suggest that particle-surface cleaning may be a sixth independent variable worth systematic study; if cleaning alone can stabilize cycling, the surface-oxide story gains support.
  • If foreign phases invisible to XRD are as widespread as the authors argue, dopant solubility limits reported from XRD-only studies will tend to be overestimated, and re-measuring those systems with electron microscopy would be a cheap falsification test.
  • The claim that Bi$_2$O$_2$Se is intrinsically prone to stoichiometric drift implies that single-cycle comparisons between undoped and doped samples are unreliable; comparing only fully cycled, stabilized samples would be a more stringent test of doping effects.
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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Referee Report

3 major / 5 minor

Summary. The paper addresses reproducibility problems in polycrystalline Bi2O2Se thermoelectrics. The authors identify several sources of variability in the literature and in their own experiments: carbonation of the Bi2O3 precursor, reaction of precursors with quartz ampoules, air sensitivity of as-synthesized powder, chemical reduction by graphite dies during compaction, and formation of foreign phases at grain boundaries. They propose a five-step synthesis protocol (decarbonation of Bi2O3, low-temperature synthesis in a crystallized quartz ampoule, temperature-gradient growth and purification, sieving to a coarse 35–340 μm fraction, and hot pressing in a Si3N4 die) and report that samples prepared accordingly (Samples 3 and 4) show stable transport properties under thermal cycling, with room-temperature electrical conductivity σRT ≈ 500 S·m⁻¹ and Seebeck coefficient S ≈ −300 μV·K⁻¹, in contrast to legacy samples (Samples 1 and 2). The paper also compiles literature data spanning four orders of magnitude in reported conductivity and argues that many nominally pure samples contain undetected foreign phases.

Significance. If the central claim holds, the proposed protocol would provide a badly needed reference baseline for doping studies in Bi2O2Se, and the identification of specific chemical failure modes (reaction with quartz, reduction by graphite, surface oxidation) is a valuable contribution to the community. The paper is unusually candid about residual limitations, explicitly stating that full property stabilization is not achieved and that PXRD phase purity can be misleading. The quantitative significance is currently limited, however, by the fact that the 'improved reproducibility' claim rests on one pellet per processing variant with no replicate batches, and by a confounded pressing-time variable in the comparison. The qualitative mechanistic discussion is strong and well supported by PXRD, SEM/EDS, DTA, and transport data.

major comments (3)
  1. [Section 3.2, Figures 6–9] The central claim that the presented protocol yields 'improved reproducibility and stability in thermal cycling' is supported by exactly one pellet for each of Samples 1–4. Reproducibility is a statistical property that cannot be established from a single specimen per condition; no repeated synthesis runs, no replicate hot-pressed pellets, and no interbatch variance estimates are provided. The stated σRT ≈ 500 S·m⁻¹ and S ≈ −300 μV·K⁻¹ are single-pellet values. Please either add replicate measurements (ideally at least three independent pellets per variant) or explicitly reframe the claim as preliminary/exploratory and remove the term 'reproducibility' from the central claim.
  2. [Experimental section, hot pressing parameters] The comparison between Samples 1/2 and Samples 3/4 is confounded by pressing time. The Experimental section states that 'temperature and pressure were maintained for 1 h for normal powders and 3 h for coarse fraction powders,' so Samples 3 and 4 differ from Samples 1 and 2 not only by calcination, gradient growth, and sieving, but also by a threefold longer hot-press dwell time. Since the five-step protocol in Section 3.2 does not specify dwell time, the apparent absence of conductivity hysteresis in Figures 8 and 9 cannot be uniquely attributed to the proposed protocol steps. Please hold the dwell time constant across all variants, or provide a clear experimental or mechanistic argument for why the dwell-time difference does not affect the interpretation.
  3. [ESM Table S3 and Figure S6] The ESM shows that a sample from the 100–250 μm fraction that was sonicated in toluene and hot-pressed for 1.5 h without calcination, gradient purification, or the full five-step protocol exhibits Δσ ≈ −0.8% after two thermal cycles, a stability comparable to that of Samples 3 and 4. This indicates that resistance to thermal cycling is not specific to the proposed protocol and can be achieved by other surface treatments. The manuscript needs to reconcile these data with the claim that the presented steps are responsible for the improved cycling stability, for example by redefining the claim or by providing a more controlled comparison where only one variable is changed at a time.
minor comments (5)
  1. [Figure 1] The yellow columns representing the authors' own data are plotted without error bars or replicate information; please add the number of samples and standard deviations, or state explicitly in the caption that these are single measurements.
  2. [Abstract] The quoted room-temperature values σRT ≈ 500 S·m⁻¹ and S ≈ −300 μV·K⁻¹ are given without uncertainties, despite the stated measurement repeatability of ±5% for σ and ±3.5% for S; please include the relevant uncertainties.
  3. [Section 3.1(a), reaction equation] The reaction equation '3x SiO2 + 2/3·Bi2O3 + 2/3·Bi +·Se → x Bi4(SiO4)3 + Bi2-4xO2-6xSe' appears to be unbalanced as written; please recheck the stoichiometry and the meaning of the dot before Se.
  4. [ESM Table S1] The sieving-efficiency statement for removal of Bi4(SiO4)3 is supported by only two particle-size fractions; please report the mass yield or residual foreign-phase content for the 35–340 μm fraction used in the final protocol.
  5. [Section 3.2, step 4] The description of the coarse-fraction benefits would benefit from a quantitative statement of the measured surface-to-volume ratio or grain orientation (e.g., from SEM texture analysis), since the qualitative SEM images in Figure 5 are the only current support.

Circularity Check

0 steps flagged · score 0.0 of 10

No circular derivation; the experimental protocol claim is self-contained and its limitations are evidentiary, not definitional.

full rationale

The paper's central claim is an experimental protocol for improving reproducibility and thermal-cycling stability of undoped polycrystalline Bi2O2Se. No equation in the paper defines a target property in terms of the same property, and no fitted parameter is renamed as a prediction. The Arrhenius activation energy EA ~ 0.20 eV is extracted from measured conductivity curves and is an output, not an input to the synthesis protocol. Self-citations (e.g., ref. 24 on foreign-phase complications and ref. 44 on modulation doping) support background statements about doping and phase formation; even if these citations were removed, the protocol comparison (Samples 1-4 and ESM variants) would stand on its own measurements. The main weakness is statistical: reproducibility is asserted from one pellet per condition, and the coarse-fraction samples also differ in hot-press dwell time (3 h vs 1 h). This is a correctness/evidence concern about whether the five-step protocol is the cause of the improved stability, not a circularity in which a prediction reduces to its own inputs by construction. The ESM additionally shows stable cycling for a toluene-cleaned sample outside the proposed protocol, which further undermines the attribution, but again this is an evidentiary issue, not a self-referential derivation. Therefore no circular step is present.

Assumptions & free parameters 1 free parameters · 4 assumptions · 0 invented entities

The protocol claim itself does not depend on fitted parameters; the only fitted value is the Arrhenius activation energy, which is used for a side comparison with the literature band gap. The main assumptions are domain-level: accuracy of computational reaction enthalpies, sieving efficiency for Bi4(SiO4)3, and the detection limits of PXRD for nanoscale foreign phases.

free parameters (1)
  • Activation energy EA from Arrhenius fit = 0.20 eV
    Slope of ln σ vs 1/T above 500 K for Samples 3 and 4; used to estimate Eg≈0.40 eV and to argue the polycrystal deviates from ideal stoichiometry. Not load-bearing for the protocol claim.
assumptions (4)
  • domain assumption The reaction enthalpies quoted for Bi2O2Se with C, SeO2, and CO2 are taken from Materials Project calculations (ref. 45) and are assumed accurate for qualitative equilibrium arguments.
    These numbers support the claim that equilibria at grain boundaries shift easily with temperature, which is central to the thermal-cycling instability argument.
  • domain assumption Bi4(SiO4)3 formed on ampoule walls is a fine powder that can be largely removed by sieving, as shown in Table S1.
    This underpins the coarse-fraction purification step; if removal is incomplete, the purified material may retain silicate contamination.
  • domain assumption PXRD cannot detect very thin 2D foreign-phase inclusions, so samples that appear single-phase may still contain FPs.
    Used to explain literature scatter and to caution that the paper's own samples may contain undetectable FPs; the Mn-doping ESM example supports this assumption.
  • standard math Arrhenius relation σ ∝ exp(-EA/kT) is valid for extracting the activation energy from the high-temperature conductivity data.
    Standard analysis used in Section 3.2 to convert the slope into EA and an estimated band gap.

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Cite this review

Pith. "Pith review of The preparation and properties of polycrystalline Bi$_2$O$_2$Se -- pitfalls and difficulties with reproducibility and charge transport limiting parameters." pith.science (2026). https://pith.science/paper/P4DQ64JV

@misc{pith2026250415227,
  author       = {Pith},
  title        = {Pith review of: The preparation and properties of polycrystalline Bi$_2$O$_2$Se -- pitfalls and difficulties with reproducibility and charge transport limiting parameters},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/P4DQ64JV}},
  note         = {Machine review of arXiv:2504.15227}
}
abstract

Thermoelectric materials allow the direct conversion of waste heat into electricity, and novel materials are being investigated for this purpose. Recently, doped Bi$_2$O$_2$Se has shown high application potential. In this study, we discuss causes for large variation in reported transport properties of pure Bi$_2$O$_2$Se and present a preparation method that improves the reproducibility of undoped polycrystalline samples and improves their stability under thermal cycling. Key steps of this method include calcination of the Bi$_2$O$_3$ precursor, purification of the synthesized material in a temperature gradient, use of a coarse particle fraction and compaction of the powders in a Si3N4 die instead of a graphite die. The resulting polycrystalline material exhibits improved reproducibility and enhanced resistance to thermal cycling. It has room temperature electrical conductivity {\sigma}RT ~ 500 S.m-1 and Seebeck coefficient S ~ -300 $\mu$V.K$^{-1}$. These properties make it suitable as a reference material for future doping studies. The presented synthesis approach may provide a more reliable platform for investigating the intrinsic behavior and doping response of Bi$_2$O$_2$Se in thermoelectric applications.

Figures

Figures reproduced from arXiv: 2504.15227 by the authors.

Figure 1
Figure 1. Comparison of the electrical conductivity σ of undoped polycrystalline materials in various doping studies. Red columns represent literature data of undoped materials prepared by solid-state reactions at high temperature. Yellow columns represent our measured data from a batch of synthesized Bi2O2Se with presented low-temperature method hot-pressed at 730°C, 70 MPa (a – < 35 μm fraction, Si3N4 die; b – all fractions… view at source ↗

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Works this paper leans on

40 extracted references · 33 canonical work pages

  1. [1]

    H. Fu, J. Wu, H. Peng, B. Yan, Self-modulation doping effect in the high-mobility layered semiconductor Bi2O2Se, Phys. Rev. B 97 (2018) 241203. https://doi.org/10.1103/PhysRevB.97.241203

    work page doi:10.1103/physrevb.97.241203 2018

  2. [2]

    Ortiz-Quiñonez, I

    J.-L. Ortiz-Quiñonez, I. Zumeta-Dubé, D. Díaz, N. Nava-Etzana, E. Cruz-Zaragoza, P. Santiago- Jacinto, Bismuth Oxide Nanoparticles Partially Substituted with EuIII , MnIV , and SiIV : Structural, Spectroscopic, and Optical Findings, Inorg. Chem. 56 (2017) 3394–3403. https://doi.org/10.1021/acs.inorgchem.6b02923

    work page doi:10.1021/acs.inorgchem.6b02923 2017

  3. [3]

    Onderka, K

    B. Onderka, K. Fitzner, M. Kopyto, W. Przybyło, Thermodynamics of Bi2O3-SiO2 system, J Min Metall B Metall 53 (2017) 223–231. https://doi.org/10.2298/JMMB170701035O

    work page doi:10.2298/jmmb170701035o 2017

  4. [4]

    X. Tan, J. Lan, K. Hu, B. Xu, Y. Liu, P. Zhang, X. Cao, Y. Zhu, W. Xu, Y. Lin, C. Nan, Boosting the thermoelectric performance of Bi2O2Se by isovalent doping, J Am Ceram Soc 101 (2018) 4634–

    work page 2018

  5. [5]

    Hong, D.H

    H.Y. Hong, D.H. Kim, S.O. Won, K. Park, Enhancement of the thermoelectric performance of n−type Bi2O2Se by Ce4+ doping, Journal of Materials Research and Technology 15 (2021) 4161–

    work page 2021

  6. [6]

    Sojka, P

    A. Sojka, P. Janíček, J. Zich, J. Navrátil, P. Ruleová, T. Plecháček, V. Kucek, K. Knížek, Č. Drašar, Extraneous doping and its necessary preconditions, Comput. Mater. Sci. 243 (2024) 113138. https://doi. org/10.1016/j.commatsci.2024.113138

    arXiv 2024

  7. [7]

    C. Song, Y. Song, L. Pan, C. Chen, P. Zong, Y. Wang, Thermoelectric properties of Bi2-xTixO2Se with the shear exfoliation-restacking process, Journal of Alloys and Compounds 892 (2022) 162147. https://doi.org/10.1016/j.jallcom.2021.162147

    work page arXiv 2022

  8. [8]

    Y. Gao, Y. Wang, L. Pan, C. Chen, P. Zong, Y. Wang, Enhancing thermoelectric performance of Bi2O2Se by W-doping with the shear exfoliation- restacking process, Materials Letters 308 (2022) 131291. https://doi.org/10.1016/j.matlet.2021.131291. 400 600 800 ZT ( - ) T (K) 0.04 0.02 0 1 2 3  (Wm -1 K -1 ) 20

    work page arXiv 2022

Show all 40 references
  1. [9]

    M. Kim, D. Park, J. Kim, Enhancement of Bi2O2Se thermoelectric power factor via Nb doping, Journal of Alloys and Compounds 851 (2021) 156905. https://doi.org/10.1016/j.jallcom.2020.156905

    2021

  2. [10]

    Y. Li, H. Huo, H. Huang, K. Guo, X. Yang, J. Xing, J. Luo, G.-H. Rao, J.-T. Zhao, Optimization of electrical and thermal transport properties of layered Bi2O2Se via Nb doping, J Mater Sci 56 (2021) 12732–12739. https://doi.org/10.1007/s10853-021-06089-5

    2021 doi

  3. [11]

    B. Zhan, Y. Liu, J. Lan, C. Zeng, Y.-H. Lin, C.-W. Nan, Enhanced Thermoelectric Performance of Bi2O2Se with Ag Addition, Materials 8 (2015) 1568–1576. https://doi.org/10.3390/ma8041568

    2015 doi

  4. [12]

    X. Tan, Y. Liu, R. Liu, Z. Zhou, C. Liu, J. Lan, Q. Zhang, Y. Lin, C. Nan, Synergistical Enhancement of Thermoelectric Properties in n-Type Bi2O2Se by Carrier Engineering and Hierarchical Microstructure, Advanced Energy Materials 9 (2019) 1900354. https://doi.org/10.1002/aenm....

    2019 doi

  5. [13]

    Ruleova, T

    P. Ruleova, T. Plechacek, J. Kasparova, M. Vlcek, L. Benes, P. Lostak, C. Drasar, Enhanced Thermoelectric Performance of n-type Bi2O2Se Ceramics Induced by Ge Doping, Journal of Elec Materi 47 (2018) 1459–1466. https://doi.org/10.1007/s11664-017-5952-4

    2018 doi

  6. [14]

    R. Liu, J. Lan, X. Tan, Y. Liu, G. Ren, C. Liu, Z. Zhou, C. Nan, Y. Lin, Carrier concentration optimization for thermoelectric performance enhancement in n-type Bi2O2Se, Journal of the European Ceramic Society 38 (2018) 2742–2746. https://doi.org/10.1016/j.jeurceramsoc.2018.02.005

    2018 doi

  7. [15]

    N. Yang, L. Pan, C. Chen, Y. Wang, Effects of Sb-doping on the electron-phonon transport properties of Bi2O2Se, Journal of Alloys and Compounds 858 (2021) 157748. https://doi.org/10.1016/j.jallcom.2020.157748

    2021

  8. [16]

    B. Zhan, S. Butt, Y. Liu, J.-L. Lan, C.-W. Nan, Y.-H. Lin, High-temperature thermoelectric behaviors of Sn-doped n-type Bi2O2Se ceramics, J Electroceram 34 (2015) 175–179. https://doi.org/10.1007/s10832-014-9969-2

    2015 doi

  9. [17]

    Fu, J.-L

    Z. Fu, J.-L. Jiang, S.-T. Dong, M.-C. Yu, L. Zhao, L. Wang, S.-H. Yao, Effects of Zr substitution on structure and thermoelectric properties of Bi2O2Se, Journal of Materials Research and Technology 21 (2022) 640–647. https://doi.org/10.1016/j.jmrt.2022.09.068

    2022 doi

  10. [18]

    X. Tan, Y. Liu, K. Hu, G. Ren, Y. Li, R. Liu, Y. Lin, J. Lan, C. Nan, Synergistically optimizing electrical and thermal transport properties of Bi2O2Se ceramics by Te-substitution, J Am Ceram Soc 101 (2018) 326–333. https://doi.org/10.1111/jace.15211

    2018 doi

  11. [19]

    L. Pan, Z. Zhao, N. Yang, W. Xing, J. Zhang, Y. Liu, C. Chen, D. Li, Y. Wang, Effects of sulfur substitution for oxygen on the thermoelectric properties of Bi2O2Se, Journal of the European Ceramic Society 40 (2020) 5543–5548. https://doi.org/10.1016/j.jeurceramsoc.2020.07.047

    2020 doi

  12. [20]

    X. Tan, J. Lan, G. Ren, Y. Liu, Y.-H. Lin, C.-W. Nan, Enhanced thermoelectric performance of n- type Bi2O2Se by Cl-doping at Se site, Journal of the American Ceramic Society 100 (2017) 1494–

    2017

  13. [21]

    Bae, H.-S

    S.Y. Bae, H.-S. Kim, S.W. Lee, O. Park, H. Park, S. Kim, Enhanced thermoelectric properties of I- doped polycrystalline Bi2O2Se oxyselenide, Journal of Materials Research and Technology 19 (2022) 2831–2836. https://doi.org/10.1016/j.jmrt.2022.06.076

    2022 doi

  14. [22]

    S. Xu, H. Fu, Y. Tian, T. Deng, J. Cai, J. Wu, T. Tu, T. Li, C. Tan, Y. Liang, C. Zhang, Z. Liu, Z. Liu, Y. Chen, Y. Jiang, B. Yan, H. Peng, Exploiting Two-Dimensional Bi2O2Se for Trace Oxygen Detection, Angew Chem Int Ed 59 (2020) 17938–17943. https://doi.org/10.1002/anie.202006745

    2020 doi

  15. [23]

    T. Li, H. Peng, 2D Bi2O2Se: An Emerging Material Platform for the Next-Generation Electronic Industry, Acc. Mater. Res. 2 (2021) 842–853. https://doi.org/10.1021/accountsmr.1c00130

    2021 doi

  16. [24]

    J. Wu, H. Yuan, M. Meng, C. Chen, Y. Sun, Z. Chen, W. Dang, C. Tan, Y. Liu, J. Yin, Y. Zhou, S. Huang, H.Q. Xu, Y. Cui, H.Y. Hwang, Z. Liu, Y. Chen, B. Yan, H. Peng, High electron mobility and quantum oscillations in non-encapsulated ultrathin semiconducting Bi2O2Se, Nature Na...

    2017 doi

  17. [25]

    T. Tong, M. Zhang, Y. Chen, Y. Li, L. Chen, J. Zhang, F. Song, X. Wang, W. Zou, Y. Xu, R. Zhang, Ultrahigh Hall mobility and suppressed backward scattering in layered semiconductor Bi2O2Se, Applied Physics Letters 113 (2018) 072106. https://doi.org/10.1063/1.5042727. 21

    2018 doi

  18. [26]

    R. Xu, S. Wang, Y. Li, H. Chen, T. Tong, Y. Cai, Y. Meng, Z. Zhang, X. Wang, F. Wang, Layered Semiconductor Bi2O2Se for Broadband Pulse Generation in the Near-Infrared, IEEE Photon. Technol. Lett. 31 (2019) 1056–1059. https://doi.org/10.1109/LPT.2019.2917472

    2019

  19. [27]

    J. Wang, J. Wu, T. Wang, Z. Xu, J. Wu, W. Hu, Z. Ren, S. Liu, K. Behnia, X. Lin, T-square resistivity without Umklapp scattering in dilute metallic Bi2O2Se, Nat Commun 11 (2020) 3846. https://doi.org/10.1038/s41467-020-17692-6

    2020 doi

  20. [28]

    Q. Mao, X. Geng, J. Yang, J. Zhang, S. Zhu, Q. Yu, Y. Wang, H. Li, R. Li, H. Hao, Synthesis and electrical transport properties of Bi2O2Se single crystals, Journal of Crystal Growth 498 (2018) 244–247. https://doi.org/10.1016/j.jcrysgro.2018.07.004

    2018 doi

  21. [29]

    Y.-Y. Lv, L. Xu, S.-T. Dong, Y.-C. Luo, Y.-Y. Zhang, Y.B. Chen, S.-H. Yao, J. Zhou, Y. Cui, S.-T. Zhang, M.-H. Lu, Y.-F. Chen, Electron-electron scattering dominated electrical and magnetotransport properties in the quasi-two-dimensional Fermi liquid single-crystal Bi2O2Se, Ph...

    2019 doi

  22. [30]

    C. Chen, M. Wang, J. Wu, H. Fu, H. Yang, Z. Tian, T. Tu, H. Peng, Y. Sun, X. Xu, J. Jiang, N.B.M. Schröter, Y. Li, D. Pei, S. Liu, S.A. Ekahana, H. Yuan, J. Xue, G. Li, J. Jia, Z. Liu, B. Yan, H. Peng, Y. Chen, Electronic structures and unusually robust bandgap in an ultrahigh...

    2018 doi

  23. [31]

    Drasar, P

    C. Drasar, P. Ruleova, L. Benes, P. Lostak, Preparation and Transport Properties of Bi2O2Se Single Crystals, Journal of Elec Materi 41 (2012) 2317–2321. https://doi.org/10.1007/s11664-012- 2143-1

    2012 doi

  24. [32]

    P. Li, A. Han, C. Zhang, X. He, J. Zhang, D. Zheng, L. Cheng, L.-J. Li, G.-X. Miao, X.-X. Zhang, Mobility-Fluctuation-Controlled Linear Positive Magnetoresistance in 2D Semiconductor Bi2O2Se Nanoplates, ACS Nano 14 (2020) 11319–11326. https://doi.org/10.1021/acsnano.0c03346

    2020 doi

  25. [33]

    Zhang, T

    C. Zhang, T. Tu, J. Wang, Y. Zhu, C. Tan, L. Chen, M. Wu, R. Zhu, Y. Liu, H. Fu, J. Yu, Y. Zhang, X. Cong, X. Zhou, J. Zhao, T. Li, Z. Liao, X. Wu, K. Lai, B. Yan, P. Gao, Q. Huang, H. Xu, H. Hu, H. Liu, J. Yin, H. Peng, Single-crystalline van der Waals layered dielectric with...

    2023 doi

  26. [34]

    Z. Zhu, X. Yao, S. Zhao, X. Lin, W. Li, Giant Modulation of the Electron Mobility in Semiconductor Bi2O2Se via Incipient Ferroelectric Phase Transition, J. Am. Chem. Soc. 144 (2022) 4541–4549. https://doi.org/10.1021/jacs.1c12681

    2022 doi

  27. [35]

    Z. Xu, J. Wang, T. Wang, W. Hu, X. Yang, X. Lin, Huge permittivity and premature metallicity in Bi2O2Se single crystals, Sci. China Phys. Mech. Astron. 64 (2021) 267312. https://doi.org/10.1007/s11433-021-1683-5

    2021 doi

  28. [36]

    A. Jain, G. Hautier, S.P. Ong, C.J. Moore, C.C. Fischer, K.A. Persson, G. Ceder, Formation enthalpies by mixing GGA and GGA + U calculations, Phys. Rev. B 84 (2011) 045115. https://doi.org/10.1103/PhysRevB.84.045115

    2011 doi

  29. [37]

    Jain, S.P

    A. Jain, S.P. Ong, G. Hautier, W. Chen, W.D. Richards, S. Dacek, S. Cholia, D. Gunter, D. Skinner, G. Ceder, K.A. Persson, Commentary: The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002. https://doi.org/10.106...

    2013 doi

  30. [1501]

    https://doi.org/10.1111/jace.14726

    doi

  31. [4172]

    https://doi.org/10.1016/j.jmrt.2021.10.002

    2021 doi

  32. [4644]

    https://doi.org/10.1111/jace.15720

    doi

Pith tools

Reviewed August 16, 2026 · model on record in the stance chip above.