{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:FTV4JDNFDZP2A43H55PR62RUSV","short_pith_number":"pith:FTV4JDNF","canonical_record":{"source":{"id":"1606.03234","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-06-10T08:59:15Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"0821f35fffd80ca64651fed53dac3594b88d252afcafdb848f3595336fc75122","abstract_canon_sha256":"2b98ba24270971c089d6af99cfd00436efbe0ab47ca955e9034525eaf74971aa"},"schema_version":"1.0"},"canonical_sha256":"2cebc48da51e5fa07367ef5f1f6a34954e299da887be170a59733e49711b6637","source":{"kind":"arxiv","id":"1606.03234","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.03234","created_at":"2026-05-18T00:45:30Z"},{"alias_kind":"arxiv_version","alias_value":"1606.03234v1","created_at":"2026-05-18T00:45:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.03234","created_at":"2026-05-18T00:45:30Z"},{"alias_kind":"pith_short_12","alias_value":"FTV4JDNFDZP2","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FTV4JDNFDZP2A43H","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FTV4JDNF","created_at":"2026-05-18T12:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:FTV4JDNFDZP2A43H55PR62RUSV","target":"record","payload":{"canonical_record":{"source":{"id":"1606.03234","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-06-10T08:59:15Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"0821f35fffd80ca64651fed53dac3594b88d252afcafdb848f3595336fc75122","abstract_canon_sha256":"2b98ba24270971c089d6af99cfd00436efbe0ab47ca955e9034525eaf74971aa"},"schema_version":"1.0"},"canonical_sha256":"2cebc48da51e5fa07367ef5f1f6a34954e299da887be170a59733e49711b6637","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:30.543772Z","signature_b64":"gLUy0nmwF0VSc6U49R/NoxqQFjRJAseHbq0U75lh7MpFql3805GL1Vu3wwOwvEJtkC3xSR0vO3Ui8zE3kl54CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2cebc48da51e5fa07367ef5f1f6a34954e299da887be170a59733e49711b6637","last_reissued_at":"2026-05-18T00:45:30.543273Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:30.543273Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.03234","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:45:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8yLSq1LAg0QIupZER4w8cQLF8mVod8xUHQGxtRj/ePVtVgO+pfZTkCoBotCd3Xu3sIYaTiOKcf9I/NM7RcKdAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:26:41.715077Z"},"content_sha256":"c12aaf39c0597a5e7aae23d3b83b5223c149f09d3806b036fc57fff5dbf37277","schema_version":"1.0","event_id":"sha256:c12aaf39c0597a5e7aae23d3b83b5223c149f09d3806b036fc57fff5dbf37277"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:FTV4JDNFDZP2A43H55PR62RUSV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatially resolved studies of the phases and morphology of methylammonium and formamidinium lead tri-halide perovskites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Mitioglu, A. Surrente, D. K. Maude, G. E. Eperon, H. J. Snaith, J. T-W.Wang, K. Galkowski, P. Kossacki, P. Plochocka, R. J. Nicholas, Z. Yang","submitted_at":"2016-06-10T08:59:15Z","abstract_excerpt":"The family of organic-inorganic tri-halide perovskites including MA (MethylAmmonium)PbI$_{3}$, MAPbI$_{3-x}$Cl$_{x}$, FA (FormAmidinium)PbI$_{3}$ and FAPbBr$_{3}$ are having a tremendous impact on the field of photovoltaic cells due to their ease of deposition and efficiencies, but device performance can be significanly affected by inhomogeneities. Here we report a study of temperature dependent micro-photoluminescence which shows a strong spatial inhomogeneity related to the presence of microcrystalline grains, which can be both light and dark. In all of the tri-iodide based materials there i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03234","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:45:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5D+R7nkhNKIfsg4AyI2Qx8klM1kBUiiUSbFpElFjppUigLCTdjpwWGvdEZVlM15WYZy01SjKWM3T0EerAs5yBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:26:41.715870Z"},"content_sha256":"71eda374e377413bbade858e49170ec83d04ca7f9438a3e705daee199b36a75a","schema_version":"1.0","event_id":"sha256:71eda374e377413bbade858e49170ec83d04ca7f9438a3e705daee199b36a75a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FTV4JDNFDZP2A43H55PR62RUSV/bundle.json","state_url":"https://pith.science/pith/FTV4JDNFDZP2A43H55PR62RUSV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FTV4JDNFDZP2A43H55PR62RUSV/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T06:26:41Z","links":{"resolver":"https://pith.science/pith/FTV4JDNFDZP2A43H55PR62RUSV","bundle":"https://pith.science/pith/FTV4JDNFDZP2A43H55PR62RUSV/bundle.json","state":"https://pith.science/pith/FTV4JDNFDZP2A43H55PR62RUSV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FTV4JDNFDZP2A43H55PR62RUSV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:FTV4JDNFDZP2A43H55PR62RUSV","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":"2b98ba24270971c089d6af99cfd00436efbe0ab47ca955e9034525eaf74971aa","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-06-10T08:59:15Z","title_canon_sha256":"0821f35fffd80ca64651fed53dac3594b88d252afcafdb848f3595336fc75122"},"schema_version":"1.0","source":{"id":"1606.03234","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.03234","created_at":"2026-05-18T00:45:30Z"},{"alias_kind":"arxiv_version","alias_value":"1606.03234v1","created_at":"2026-05-18T00:45:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.03234","created_at":"2026-05-18T00:45:30Z"},{"alias_kind":"pith_short_12","alias_value":"FTV4JDNFDZP2","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FTV4JDNFDZP2A43H","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FTV4JDNF","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:71eda374e377413bbade858e49170ec83d04ca7f9438a3e705daee199b36a75a","target":"graph","created_at":"2026-05-18T00:45:30Z","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":"The family of organic-inorganic tri-halide perovskites including MA (MethylAmmonium)PbI$_{3}$, MAPbI$_{3-x}$Cl$_{x}$, FA (FormAmidinium)PbI$_{3}$ and FAPbBr$_{3}$ are having a tremendous impact on the field of photovoltaic cells due to their ease of deposition and efficiencies, but device performance can be significanly affected by inhomogeneities. Here we report a study of temperature dependent micro-photoluminescence which shows a strong spatial inhomogeneity related to the presence of microcrystalline grains, which can be both light and dark. In all of the tri-iodide based materials there i","authors_text":"A. Mitioglu, A. Surrente, D. K. Maude, G. E. Eperon, H. J. Snaith, J. T-W.Wang, K. Galkowski, P. Kossacki, P. Plochocka, R. J. Nicholas, Z. Yang","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-06-10T08:59:15Z","title":"Spatially resolved studies of the phases and morphology of methylammonium and formamidinium lead tri-halide perovskites"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03234","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:c12aaf39c0597a5e7aae23d3b83b5223c149f09d3806b036fc57fff5dbf37277","target":"record","created_at":"2026-05-18T00:45:30Z","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":"2b98ba24270971c089d6af99cfd00436efbe0ab47ca955e9034525eaf74971aa","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-06-10T08:59:15Z","title_canon_sha256":"0821f35fffd80ca64651fed53dac3594b88d252afcafdb848f3595336fc75122"},"schema_version":"1.0","source":{"id":"1606.03234","kind":"arxiv","version":1}},"canonical_sha256":"2cebc48da51e5fa07367ef5f1f6a34954e299da887be170a59733e49711b6637","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2cebc48da51e5fa07367ef5f1f6a34954e299da887be170a59733e49711b6637","first_computed_at":"2026-05-18T00:45:30.543273Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:30.543273Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gLUy0nmwF0VSc6U49R/NoxqQFjRJAseHbq0U75lh7MpFql3805GL1Vu3wwOwvEJtkC3xSR0vO3Ui8zE3kl54CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:30.543772Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.03234","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c12aaf39c0597a5e7aae23d3b83b5223c149f09d3806b036fc57fff5dbf37277","sha256:71eda374e377413bbade858e49170ec83d04ca7f9438a3e705daee199b36a75a"],"state_sha256":"8daf91ff0de7b1efde66d4d485d16d64ac392a7f9d6137ab4ca1c1326256c04d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nXn+iF7NevDHjmKWw5TxJA2YbuKTv6lB7aQpmjDQt7o0iHHANtuXk4DInLxkLM+iOII/GCcdYJUrXrTlB6BZCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T06:26:41.720063Z","bundle_sha256":"9be792c1bd5ae27dfd2d00c008df7b3800cef30e05abda7f7a1947e6aa4aa0a5"}}