PbS nanosheets with thickness 4 to 16 nm show thickness-dependent terahertz mobility of 550 to 1000 cm2/Vs and a dominant excitonic response after photoexcitation.
Comparison of normalized THz spectra at 8 and 200 ps after photoexcitation, showing that the later time response can be described by a scaling factor
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Photoexcitation of PbS Nanosheets Leads to Highly Mobile Charge Carriers and Stable Excitons
PbS nanosheets with thickness 4 to 16 nm show thickness-dependent terahertz mobility of 550 to 1000 cm2/Vs and a dominant excitonic response after photoexcitation.