{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7NR6HITJ63YQDWAGR3UFTLJANR","short_pith_number":"pith:7NR6HITJ","canonical_record":{"source":{"id":"1710.10151","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-10-27T14:20:34Z","cross_cats_sorted":[],"title_canon_sha256":"52daa2658bd38876a845d3ebfdc275d2d3d020526c359e3e93f1fadfe90bf7de","abstract_canon_sha256":"ee41f054f3488d9227f83ed67053a1cf066c265d1cc67d6cc3c479f7ddf51d84"},"schema_version":"1.0"},"canonical_sha256":"fb63e3a269f6f101d8068ee859ad206c7345c500eadf2f0f5956e9e482b439db","source":{"kind":"arxiv","id":"1710.10151","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.10151","created_at":"2026-05-17T23:53:11Z"},{"alias_kind":"arxiv_version","alias_value":"1710.10151v1","created_at":"2026-05-17T23:53:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.10151","created_at":"2026-05-17T23:53:11Z"},{"alias_kind":"pith_short_12","alias_value":"7NR6HITJ63YQ","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7NR6HITJ63YQDWAG","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7NR6HITJ","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7NR6HITJ63YQDWAGR3UFTLJANR","target":"record","payload":{"canonical_record":{"source":{"id":"1710.10151","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-10-27T14:20:34Z","cross_cats_sorted":[],"title_canon_sha256":"52daa2658bd38876a845d3ebfdc275d2d3d020526c359e3e93f1fadfe90bf7de","abstract_canon_sha256":"ee41f054f3488d9227f83ed67053a1cf066c265d1cc67d6cc3c479f7ddf51d84"},"schema_version":"1.0"},"canonical_sha256":"fb63e3a269f6f101d8068ee859ad206c7345c500eadf2f0f5956e9e482b439db","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:53:11.951165Z","signature_b64":"9AGis0GHIUqPdhgzGl4ge5NvRttZf4gm7Es+I7VS26/c9nWVgeoOQUJcGQdA1N3q7T8gHSS9f1b025q7WuDZAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb63e3a269f6f101d8068ee859ad206c7345c500eadf2f0f5956e9e482b439db","last_reissued_at":"2026-05-17T23:53:11.950398Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:53:11.950398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.10151","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":"2026-05-17T23:53:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0FXbH8ErlawymQ0K6wJyn7CEqVNUFMX7a8vH2lWZ5zfgpNbEkjSGDx0/c6dNUqjX7p7uCNKtjNHoVlDKvs1rDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:34:00.643617Z"},"content_sha256":"d2e201821f118e15cb1be9fb4e09dbd8d0d26d8fb49a866dc66fb4c0295a8fd2","schema_version":"1.0","event_id":"sha256:d2e201821f118e15cb1be9fb4e09dbd8d0d26d8fb49a866dc66fb4c0295a8fd2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7NR6HITJ63YQDWAGR3UFTLJANR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Identification of Free and Bound Exciton States and Their Phase-Dependent Trapping Behavior in Lead Halide Perovskites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Dongmei Li, Huijue Wu, Huiyin Zhang, Jacek J. Jasieniak, Jiangjian Shi, Qingbo Meng, Yanhong Luo, Yiming Li, Yusheng Li","submitted_at":"2017-10-27T14:20:34Z","abstract_excerpt":"In this work we probe the sub-gap energy states within polycrystalline and single crystal lead halide perovskites to better understand their intrinsic photophysics behaviors. Through combined temperature and intensity-dependent optical measurements, we reveal the existence of both free and bound exciton contributions within the sub-gap energy state manifold. The trapping and recombination dynamics of these excitons is shown to be strongly dependent on the structural phase of the perovskite. The orthorhombic phase exhibits ultrafast exciton trapping and distinct trap emission, while the tetrago"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.10151","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":"2026-05-17T23:53:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UQ4MSaFD5ayPlEQh8H5xgc6Xa5v7QoL271nCrD0HJJ+AiOsO+W40YT0st9P2fuhjICb7nFQ/v193O9szcnC7DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:34:00.643961Z"},"content_sha256":"c6417b1ff94e7c56a55804b880d8be3e6482b015ec2d28fbdf2fa19fd7e453bd","schema_version":"1.0","event_id":"sha256:c6417b1ff94e7c56a55804b880d8be3e6482b015ec2d28fbdf2fa19fd7e453bd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7NR6HITJ63YQDWAGR3UFTLJANR/bundle.json","state_url":"https://pith.science/pith/7NR6HITJ63YQDWAGR3UFTLJANR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7NR6HITJ63YQDWAGR3UFTLJANR/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":"2026-06-04T08:34:00Z","links":{"resolver":"https://pith.science/pith/7NR6HITJ63YQDWAGR3UFTLJANR","bundle":"https://pith.science/pith/7NR6HITJ63YQDWAGR3UFTLJANR/bundle.json","state":"https://pith.science/pith/7NR6HITJ63YQDWAGR3UFTLJANR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7NR6HITJ63YQDWAGR3UFTLJANR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7NR6HITJ63YQDWAGR3UFTLJANR","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":"ee41f054f3488d9227f83ed67053a1cf066c265d1cc67d6cc3c479f7ddf51d84","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-10-27T14:20:34Z","title_canon_sha256":"52daa2658bd38876a845d3ebfdc275d2d3d020526c359e3e93f1fadfe90bf7de"},"schema_version":"1.0","source":{"id":"1710.10151","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.10151","created_at":"2026-05-17T23:53:11Z"},{"alias_kind":"arxiv_version","alias_value":"1710.10151v1","created_at":"2026-05-17T23:53:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.10151","created_at":"2026-05-17T23:53:11Z"},{"alias_kind":"pith_short_12","alias_value":"7NR6HITJ63YQ","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7NR6HITJ63YQDWAG","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7NR6HITJ","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:c6417b1ff94e7c56a55804b880d8be3e6482b015ec2d28fbdf2fa19fd7e453bd","target":"graph","created_at":"2026-05-17T23:53:11Z","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":"In this work we probe the sub-gap energy states within polycrystalline and single crystal lead halide perovskites to better understand their intrinsic photophysics behaviors. Through combined temperature and intensity-dependent optical measurements, we reveal the existence of both free and bound exciton contributions within the sub-gap energy state manifold. The trapping and recombination dynamics of these excitons is shown to be strongly dependent on the structural phase of the perovskite. The orthorhombic phase exhibits ultrafast exciton trapping and distinct trap emission, while the tetrago","authors_text":"Dongmei Li, Huijue Wu, Huiyin Zhang, Jacek J. Jasieniak, Jiangjian Shi, Qingbo Meng, Yanhong Luo, Yiming Li, Yusheng Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-10-27T14:20:34Z","title":"Identification of Free and Bound Exciton States and Their Phase-Dependent Trapping Behavior in Lead Halide Perovskites"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.10151","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:d2e201821f118e15cb1be9fb4e09dbd8d0d26d8fb49a866dc66fb4c0295a8fd2","target":"record","created_at":"2026-05-17T23:53:11Z","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":"ee41f054f3488d9227f83ed67053a1cf066c265d1cc67d6cc3c479f7ddf51d84","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-10-27T14:20:34Z","title_canon_sha256":"52daa2658bd38876a845d3ebfdc275d2d3d020526c359e3e93f1fadfe90bf7de"},"schema_version":"1.0","source":{"id":"1710.10151","kind":"arxiv","version":1}},"canonical_sha256":"fb63e3a269f6f101d8068ee859ad206c7345c500eadf2f0f5956e9e482b439db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fb63e3a269f6f101d8068ee859ad206c7345c500eadf2f0f5956e9e482b439db","first_computed_at":"2026-05-17T23:53:11.950398Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:53:11.950398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9AGis0GHIUqPdhgzGl4ge5NvRttZf4gm7Es+I7VS26/c9nWVgeoOQUJcGQdA1N3q7T8gHSS9f1b025q7WuDZAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:53:11.951165Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.10151","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d2e201821f118e15cb1be9fb4e09dbd8d0d26d8fb49a866dc66fb4c0295a8fd2","sha256:c6417b1ff94e7c56a55804b880d8be3e6482b015ec2d28fbdf2fa19fd7e453bd"],"state_sha256":"1056471653dc8d94485dac666bbeef19fc1c056f90d614236cdd9c19f8f0a7c1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qik/finTKPX814wvkA2z9JmLLkp96eaxUD7YuRuEtba9nK4h6ibfEjw0PsWOFSeEeBmB/7E0UVMpHdKHZXvIDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T08:34:00.645842Z","bundle_sha256":"d2a14feb5d3b935ac401ec7565eff3fde549a0658fa698bb03fa3e96ca85d178"}}