{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NWHHB2DROTIRQ334HESKXLWZ2J","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"b85fe1b30fbfd5e38d184be09cd6b50fdf5d6f8c58c2510cb60cc929c2d17662","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-20T11:26:31Z","title_canon_sha256":"1ec54b937cb37f4c7b48965601f3a953463d9c1abc890c9e6dfdf2ccf4a47118"},"schema_version":"1.0","source":{"id":"1804.07554","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.07554","created_at":"2026-05-17T23:52:07Z"},{"alias_kind":"arxiv_version","alias_value":"1804.07554v1","created_at":"2026-05-17T23:52:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07554","created_at":"2026-05-17T23:52:07Z"},{"alias_kind":"pith_short_12","alias_value":"NWHHB2DROTIR","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NWHHB2DROTIRQ334","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NWHHB2DR","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:85b80c9f7702818ad6ea5905488a7b0dfc0c063d09d5503be15bd016dc112356","target":"graph","created_at":"2026-05-17T23:52:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Methylammonium lead triiodide perovskite (MAPbI3) semiconductor displays outstanding photovoltaic and light emitting properties. We address the unique behavior in which a bias voltage can be used to switch on and off the luminescence of a planar film with lateral symmetric electrodes. Instead of a homogeneous suppression of emission, as in other organic semiconductor films, in MAPbI3 films a dark region advances from the positive electrode at a slow velocity of order of 1 um s-1. Here we explain the existence of the sharp front in terms of the drift of ionic vacancies that drastically reduce t","authors_text":"Antonio Guerrero, Cheng Li, Juan Bisquert, Sven Huettner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-20T11:26:31Z","title":"Unravelling the role of vacancies in lead halide perovskite through electrical switching of photoluminescence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07554","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:164f81e979cdb54391f761adaa74988e8cd16843c572ddf082e04f3307ae6865","target":"record","created_at":"2026-05-17T23:52:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"b85fe1b30fbfd5e38d184be09cd6b50fdf5d6f8c58c2510cb60cc929c2d17662","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-20T11:26:31Z","title_canon_sha256":"1ec54b937cb37f4c7b48965601f3a953463d9c1abc890c9e6dfdf2ccf4a47118"},"schema_version":"1.0","source":{"id":"1804.07554","kind":"arxiv","version":1}},"canonical_sha256":"6d8e70e87174d1186f7c3924abaed9d27847fcd2509c4494cdbe5a07e2ce8b88","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d8e70e87174d1186f7c3924abaed9d27847fcd2509c4494cdbe5a07e2ce8b88","first_computed_at":"2026-05-17T23:52:07.796792Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:07.796792Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d7EyhJR1DKfNFtxOglgTwj6Si4gPbmjHaBAJMTk/dI344Hv5DV6jb2DIaH7CNFgUJSnp0hniXaoReMmS+WpPCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:07.797197Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.07554","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:164f81e979cdb54391f761adaa74988e8cd16843c572ddf082e04f3307ae6865","sha256:85b80c9f7702818ad6ea5905488a7b0dfc0c063d09d5503be15bd016dc112356"],"state_sha256":"9f26dd627b2a68b0656c72a72e5ecb320dd9918976e72f8b733b46737dd21631"}