{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:YGYW6RY3LM6GHTPMYREWPHVU4I","short_pith_number":"pith:YGYW6RY3","schema_version":"1.0","canonical_sha256":"c1b16f471b5b3c63cdecc449679eb4e2359125f573dd94c267b8b2e3c7958cac","source":{"kind":"arxiv","id":"1906.02475","version":2},"attestation_state":"computed","paper":{"title":"Discovery of Ionic Impact Ionization (I3) in Perovskites Triggered by a Single Photon","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.app-ph","authors_text":"Alex Ce Zhang, Iftikhar Ahmad Niaz, Jiayun Zhou, Kenji Nomura, Lujiang Yan, Mohammad Abu Raihan Miah, Shaurya Arya, Sheng Xu, Yimu Chen, Yugang Yu, Yu-Hwa Lo, Yusheng Lei, Zihan Xu","submitted_at":"2019-06-06T08:28:41Z","abstract_excerpt":"Organic-inorganic metal halide perovskite devices have generated significant interest for LED, photodetector, and solar cell applications due to their attractive optoelectronic properties and substrate-choice flexibility1-4. These devices exhibit slow time-scale response, which have been explained by point defect migration5-6. In this work, we report the discovery of a room temperature intrinsic amplification process in methylammonium lead iodide perovskite (MAPbI3) that can be triggered by few photons, down to a single photon. The electrical properties of the material, by way of photoresponse"},"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":"1906.02475","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-06-06T08:28:41Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"c839ef9385b2f86c6c78fbf59af67f6dbb064dbb731f34002e41609c0b53c926","abstract_canon_sha256":"ba0a3cb476a5793f97f5c419dfe0df0dfb5b116817fe0f9368f4e1fa1395dd61"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:27.490939Z","signature_b64":"xRN0KiauVTKV1m81wV3zPSMO6ClS/D4R+fCmIv8iVSwZH6SYuYbD1dhR49GLxWLxm9NmkbqDclYS0Drj85BEBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1b16f471b5b3c63cdecc449679eb4e2359125f573dd94c267b8b2e3c7958cac","last_reissued_at":"2026-05-17T23:43:27.490416Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:27.490416Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Discovery of Ionic Impact Ionization (I3) in Perovskites Triggered by a Single Photon","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.app-ph","authors_text":"Alex Ce Zhang, Iftikhar Ahmad Niaz, Jiayun Zhou, Kenji Nomura, Lujiang Yan, Mohammad Abu Raihan Miah, Shaurya Arya, Sheng Xu, Yimu Chen, Yugang Yu, Yu-Hwa Lo, Yusheng Lei, Zihan Xu","submitted_at":"2019-06-06T08:28:41Z","abstract_excerpt":"Organic-inorganic metal halide perovskite devices have generated significant interest for LED, photodetector, and solar cell applications due to their attractive optoelectronic properties and substrate-choice flexibility1-4. These devices exhibit slow time-scale response, which have been explained by point defect migration5-6. In this work, we report the discovery of a room temperature intrinsic amplification process in methylammonium lead iodide perovskite (MAPbI3) that can be triggered by few photons, down to a single photon. The electrical properties of the material, by way of photoresponse"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.02475","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"1906.02475","created_at":"2026-05-17T23:43:27.490481+00:00"},{"alias_kind":"arxiv_version","alias_value":"1906.02475v2","created_at":"2026-05-17T23:43:27.490481+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.02475","created_at":"2026-05-17T23:43:27.490481+00:00"},{"alias_kind":"pith_short_12","alias_value":"YGYW6RY3LM6G","created_at":"2026-05-18T12:33:33.725879+00:00"},{"alias_kind":"pith_short_16","alias_value":"YGYW6RY3LM6GHTPM","created_at":"2026-05-18T12:33:33.725879+00:00"},{"alias_kind":"pith_short_8","alias_value":"YGYW6RY3","created_at":"2026-05-18T12:33:33.725879+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/YGYW6RY3LM6GHTPMYREWPHVU4I","json":"https://pith.science/pith/YGYW6RY3LM6GHTPMYREWPHVU4I.json","graph_json":"https://pith.science/api/pith-number/YGYW6RY3LM6GHTPMYREWPHVU4I/graph.json","events_json":"https://pith.science/api/pith-number/YGYW6RY3LM6GHTPMYREWPHVU4I/events.json","paper":"https://pith.science/paper/YGYW6RY3"},"agent_actions":{"view_html":"https://pith.science/pith/YGYW6RY3LM6GHTPMYREWPHVU4I","download_json":"https://pith.science/pith/YGYW6RY3LM6GHTPMYREWPHVU4I.json","view_paper":"https://pith.science/paper/YGYW6RY3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1906.02475&json=true","fetch_graph":"https://pith.science/api/pith-number/YGYW6RY3LM6GHTPMYREWPHVU4I/graph.json","fetch_events":"https://pith.science/api/pith-number/YGYW6RY3LM6GHTPMYREWPHVU4I/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YGYW6RY3LM6GHTPMYREWPHVU4I/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YGYW6RY3LM6GHTPMYREWPHVU4I/action/storage_attestation","attest_author":"https://pith.science/pith/YGYW6RY3LM6GHTPMYREWPHVU4I/action/author_attestation","sign_citation":"https://pith.science/pith/YGYW6RY3LM6GHTPMYREWPHVU4I/action/citation_signature","submit_replication":"https://pith.science/pith/YGYW6RY3LM6GHTPMYREWPHVU4I/action/replication_record"}},"created_at":"2026-05-17T23:43:27.490481+00:00","updated_at":"2026-05-17T23:43:27.490481+00:00"}