{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:4US2WPLWROV2Q6F2JU3N6I23OS","short_pith_number":"pith:4US2WPLW","schema_version":"1.0","canonical_sha256":"e525ab3d768baba878ba4d36df235b74b8ff59ffc680faa50e149e41bce13ab4","source":{"kind":"arxiv","id":"1909.08701","version":1},"attestation_state":"computed","paper":{"title":"Broadening near-field emission for performance enhancement in thermophotovoltaics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Bo Zhao, Georgia T. Papadakis, Shanhui Fan, Siddharth Buddhiraju, Zhexin Zhao","submitted_at":"2019-09-18T20:51:47Z","abstract_excerpt":"The conventional notion for achieving high efficiency in thermophotovoltaics (TPVs) is to use a monochromatic emission at a photon energy corresponding to the band gap of the cell. Here, we prove theoretically that such a notion is only accurate under idealized conditions, and further show that when non-radiative recombination is taken into account, efficiency improvement can be achieved by broadening the emission spectrum, due to an enhancement in the open-circuit voltage. Broadening the emission spectrum also improves the electrical power density, by increasing the short-circuit current. To "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1909.08701","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-09-18T20:51:47Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"9a0569c3627cd04960601f1da4ec8f0719c3d7fc4a3bbb3b92b0b821e5efa3c2","abstract_canon_sha256":"4962be6406c47d1f58bad9045dc597c1ac4726c4b1f641e1d28b2c20d8ed018d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:56:32.734714Z","signature_b64":"3vnSDsSh3LRPZGiZR1+MCR65TQ/8nvuZgA2dZAJJLlQ0E61/rnmU9JDQ4yn52C2P2SFe6GzVqefMA2KliqzFCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e525ab3d768baba878ba4d36df235b74b8ff59ffc680faa50e149e41bce13ab4","last_reissued_at":"2026-07-05T00:56:32.734292Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:56:32.734292Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Broadening near-field emission for performance enhancement in thermophotovoltaics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Bo Zhao, Georgia T. Papadakis, Shanhui Fan, Siddharth Buddhiraju, Zhexin Zhao","submitted_at":"2019-09-18T20:51:47Z","abstract_excerpt":"The conventional notion for achieving high efficiency in thermophotovoltaics (TPVs) is to use a monochromatic emission at a photon energy corresponding to the band gap of the cell. Here, we prove theoretically that such a notion is only accurate under idealized conditions, and further show that when non-radiative recombination is taken into account, efficiency improvement can be achieved by broadening the emission spectrum, due to an enhancement in the open-circuit voltage. Broadening the emission spectrum also improves the electrical power density, by increasing the short-circuit current. To "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.08701","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1909.08701/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1909.08701","created_at":"2026-07-05T00:56:32.734355+00:00"},{"alias_kind":"arxiv_version","alias_value":"1909.08701v1","created_at":"2026-07-05T00:56:32.734355+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.08701","created_at":"2026-07-05T00:56:32.734355+00:00"},{"alias_kind":"pith_short_12","alias_value":"4US2WPLWROV2","created_at":"2026-07-05T00:56:32.734355+00:00"},{"alias_kind":"pith_short_16","alias_value":"4US2WPLWROV2Q6F2","created_at":"2026-07-05T00:56:32.734355+00:00"},{"alias_kind":"pith_short_8","alias_value":"4US2WPLW","created_at":"2026-07-05T00:56:32.734355+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4US2WPLWROV2Q6F2JU3N6I23OS","json":"https://pith.science/pith/4US2WPLWROV2Q6F2JU3N6I23OS.json","graph_json":"https://pith.science/api/pith-number/4US2WPLWROV2Q6F2JU3N6I23OS/graph.json","events_json":"https://pith.science/api/pith-number/4US2WPLWROV2Q6F2JU3N6I23OS/events.json","paper":"https://pith.science/paper/4US2WPLW"},"agent_actions":{"view_html":"https://pith.science/pith/4US2WPLWROV2Q6F2JU3N6I23OS","download_json":"https://pith.science/pith/4US2WPLWROV2Q6F2JU3N6I23OS.json","view_paper":"https://pith.science/paper/4US2WPLW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1909.08701&json=true","fetch_graph":"https://pith.science/api/pith-number/4US2WPLWROV2Q6F2JU3N6I23OS/graph.json","fetch_events":"https://pith.science/api/pith-number/4US2WPLWROV2Q6F2JU3N6I23OS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4US2WPLWROV2Q6F2JU3N6I23OS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4US2WPLWROV2Q6F2JU3N6I23OS/action/storage_attestation","attest_author":"https://pith.science/pith/4US2WPLWROV2Q6F2JU3N6I23OS/action/author_attestation","sign_citation":"https://pith.science/pith/4US2WPLWROV2Q6F2JU3N6I23OS/action/citation_signature","submit_replication":"https://pith.science/pith/4US2WPLWROV2Q6F2JU3N6I23OS/action/replication_record"}},"created_at":"2026-07-05T00:56:32.734355+00:00","updated_at":"2026-07-05T00:56:32.734355+00:00"}