{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:Q3EX6F5GRBSTTBUO7UWIYVOJ6S","short_pith_number":"pith:Q3EX6F5G","canonical_record":{"source":{"id":"1708.07608","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-08-25T04:01:47Z","cross_cats_sorted":[],"title_canon_sha256":"379e31d1556e73a5fd7a29c7e5ee3ff18adf4726636bf43ab605071449270fa2","abstract_canon_sha256":"556a25b22f348d350d9a3892e1207fede1bc890778dcb2accab96967345e2cdc"},"schema_version":"1.0"},"canonical_sha256":"86c97f17a6886539868efd2c8c55c9f4baf1ad08ae9aed9e533f19056d7f97f1","source":{"kind":"arxiv","id":"1708.07608","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07608","created_at":"2026-05-18T00:32:54Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07608v3","created_at":"2026-05-18T00:32:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07608","created_at":"2026-05-18T00:32:54Z"},{"alias_kind":"pith_short_12","alias_value":"Q3EX6F5GRBST","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q3EX6F5GRBSTTBUO","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q3EX6F5G","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:Q3EX6F5GRBSTTBUO7UWIYVOJ6S","target":"record","payload":{"canonical_record":{"source":{"id":"1708.07608","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-08-25T04:01:47Z","cross_cats_sorted":[],"title_canon_sha256":"379e31d1556e73a5fd7a29c7e5ee3ff18adf4726636bf43ab605071449270fa2","abstract_canon_sha256":"556a25b22f348d350d9a3892e1207fede1bc890778dcb2accab96967345e2cdc"},"schema_version":"1.0"},"canonical_sha256":"86c97f17a6886539868efd2c8c55c9f4baf1ad08ae9aed9e533f19056d7f97f1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:54.922919Z","signature_b64":"VvvwHwHgXNTs57qBHOPyHuEBETZEaYc3R4cFeIGkVEI/4kZ6bI9WLhnUZPzl98f7CX9AYdnYWdOCT6dlCcf6BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"86c97f17a6886539868efd2c8c55c9f4baf1ad08ae9aed9e533f19056d7f97f1","last_reissued_at":"2026-05-18T00:32:54.922426Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:54.922426Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.07608","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:32:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Wc9NCIFAmv6crzWtXFqD/QQXfPSvKhRUqscDXiqsE+TOqHeAEgpwgVLEAfxqpwqIYB/rPsmZd+6bhfbshTSAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:48:09.998248Z"},"content_sha256":"9f03b72a92baec4ac9501e32828dd9c0268a5b50b619c475c261f396e1919759","schema_version":"1.0","event_id":"sha256:9f03b72a92baec4ac9501e32828dd9c0268a5b50b619c475c261f396e1919759"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:Q3EX6F5GRBSTTBUO7UWIYVOJ6S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Influence of water intercalation and hydration on chemical decomposition and ion transport in methylammonium lead halide perovskites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Andrew P. McMahon, Aron Walsh, Chol-Jun Yu, Gum-Chol Ri, Nicholas M. Harrison, Piers R. F. Barnes, Un-Gi Jong","submitted_at":"2017-08-25T04:01:47Z","abstract_excerpt":"The use of methylammonium (MA) lead halide perovskites \\ce{CH3NH3PbX3} (X=I, Br, Cl) in perovskite solar cells (PSCs) has made great progress in performance efficiency during recent years. However, the rapid decomposition of \\ce{MAPbI3} in humid environments hinders outdoor application of PSCs, and thus, a comprehensive understanding of the degradation mechanism is required. To do this, we investigate the effect of water intercalation and hydration of the decomposition and ion migration of \\ce{CH3NH3PbX3} using first-principles calculations. We find that water interacts with \\ce{PbX6} and MA t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07608","kind":"arxiv","version":3},"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":"2026-05-18T00:32:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/RfjJ5iD8EP/HgZpctVODxzXdEPfIPkjMC28oSMk5/5dRaews1dk7W50rbrrRni84wmgS+W411NKF/4/6QnlBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:48:09.998957Z"},"content_sha256":"2958f981216e851cc264185508f28c572112a5a219e606763fa6895f5a5a61e1","schema_version":"1.0","event_id":"sha256:2958f981216e851cc264185508f28c572112a5a219e606763fa6895f5a5a61e1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q3EX6F5GRBSTTBUO7UWIYVOJ6S/bundle.json","state_url":"https://pith.science/pith/Q3EX6F5GRBSTTBUO7UWIYVOJ6S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q3EX6F5GRBSTTBUO7UWIYVOJ6S/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":"2026-05-25T09:48:10Z","links":{"resolver":"https://pith.science/pith/Q3EX6F5GRBSTTBUO7UWIYVOJ6S","bundle":"https://pith.science/pith/Q3EX6F5GRBSTTBUO7UWIYVOJ6S/bundle.json","state":"https://pith.science/pith/Q3EX6F5GRBSTTBUO7UWIYVOJ6S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q3EX6F5GRBSTTBUO7UWIYVOJ6S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:Q3EX6F5GRBSTTBUO7UWIYVOJ6S","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":"556a25b22f348d350d9a3892e1207fede1bc890778dcb2accab96967345e2cdc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-08-25T04:01:47Z","title_canon_sha256":"379e31d1556e73a5fd7a29c7e5ee3ff18adf4726636bf43ab605071449270fa2"},"schema_version":"1.0","source":{"id":"1708.07608","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07608","created_at":"2026-05-18T00:32:54Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07608v3","created_at":"2026-05-18T00:32:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07608","created_at":"2026-05-18T00:32:54Z"},{"alias_kind":"pith_short_12","alias_value":"Q3EX6F5GRBST","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q3EX6F5GRBSTTBUO","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q3EX6F5G","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:2958f981216e851cc264185508f28c572112a5a219e606763fa6895f5a5a61e1","target":"graph","created_at":"2026-05-18T00:32:54Z","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 use of methylammonium (MA) lead halide perovskites \\ce{CH3NH3PbX3} (X=I, Br, Cl) in perovskite solar cells (PSCs) has made great progress in performance efficiency during recent years. However, the rapid decomposition of \\ce{MAPbI3} in humid environments hinders outdoor application of PSCs, and thus, a comprehensive understanding of the degradation mechanism is required. To do this, we investigate the effect of water intercalation and hydration of the decomposition and ion migration of \\ce{CH3NH3PbX3} using first-principles calculations. We find that water interacts with \\ce{PbX6} and MA t","authors_text":"Andrew P. McMahon, Aron Walsh, Chol-Jun Yu, Gum-Chol Ri, Nicholas M. Harrison, Piers R. F. Barnes, Un-Gi Jong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-08-25T04:01:47Z","title":"Influence of water intercalation and hydration on chemical decomposition and ion transport in methylammonium lead halide perovskites"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07608","kind":"arxiv","version":3},"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":"sha256:9f03b72a92baec4ac9501e32828dd9c0268a5b50b619c475c261f396e1919759","target":"record","created_at":"2026-05-18T00:32:54Z","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":"556a25b22f348d350d9a3892e1207fede1bc890778dcb2accab96967345e2cdc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-08-25T04:01:47Z","title_canon_sha256":"379e31d1556e73a5fd7a29c7e5ee3ff18adf4726636bf43ab605071449270fa2"},"schema_version":"1.0","source":{"id":"1708.07608","kind":"arxiv","version":3}},"canonical_sha256":"86c97f17a6886539868efd2c8c55c9f4baf1ad08ae9aed9e533f19056d7f97f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"86c97f17a6886539868efd2c8c55c9f4baf1ad08ae9aed9e533f19056d7f97f1","first_computed_at":"2026-05-18T00:32:54.922426Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:54.922426Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VvvwHwHgXNTs57qBHOPyHuEBETZEaYc3R4cFeIGkVEI/4kZ6bI9WLhnUZPzl98f7CX9AYdnYWdOCT6dlCcf6BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:54.922919Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.07608","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f03b72a92baec4ac9501e32828dd9c0268a5b50b619c475c261f396e1919759","sha256:2958f981216e851cc264185508f28c572112a5a219e606763fa6895f5a5a61e1"],"state_sha256":"7c8e6d511822bd67aa5d7fa5b2745cba340cb1ffab95eaa8faed8d87e06a83ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wHmx/yOH3PXMwnTlzSyQfMW/WGyOVTstUBH0fU0GboEXVcuY72hMgZoXNQzmPckZYlseVdzoCNE/3vB4P1dDCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T09:48:10.002925Z","bundle_sha256":"3aad92deab909246fbb625d4233cd72541e098026ad6864ffc85f329a28fa232"}}