{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:VPCNMUB2DBEFOJQF4UTBJKE5FJ","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":"cd02b8566bc75a11e90f8d3169687818c1ef018c86027597a02cf03c82491d73","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-03-04T23:11:51Z","title_canon_sha256":"ee019d9ad464d2bcbe9026765fa98fa7c74e18bca0a908add5c469646d5d6eef"},"schema_version":"1.0","source":{"id":"1403.0972","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.0972","created_at":"2026-05-18T02:45:55Z"},{"alias_kind":"arxiv_version","alias_value":"1403.0972v2","created_at":"2026-05-18T02:45:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.0972","created_at":"2026-05-18T02:45:55Z"},{"alias_kind":"pith_short_12","alias_value":"VPCNMUB2DBEF","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"VPCNMUB2DBEFOJQF","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"VPCNMUB2","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:9ea0c0cf6b895aaa33512c95282c499b37e812268347a8ede9d11f885c38ed45","target":"graph","created_at":"2026-05-18T02:45:55Z","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":"Charge carrier recombination is studied in operational organic solar cells made from the polymer:fullerene system PCDTBT:PC71BM (poly[N-9\"-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] : [6,6]-phenyl-C$_{70}$-butyric acid methyl ester). A newly developed technique High Intensity Resistance dependent PhotoVoltage (HI-RPV) is presented for reliably quantifying the bimolecular recombination coefficient independently of variations in experimental conditions, thereby resolving key limitations of previous experimental approaches. Experiments are performed on sola","authors_text":"Almantas Pivrikas, Bronson Philippa, Marrapan Velusamy, Martin Stolterfoht, Paul L. Burn, Paul Meredith, Ronald D. White","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-03-04T23:11:51Z","title":"Molecular weight dependent bimolecular recombination in organic solar cells"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.0972","kind":"arxiv","version":2},"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:a5184f40f76f92779a434d88aa95f417c301f0b1cc6acd7ae76f11b71590539b","target":"record","created_at":"2026-05-18T02:45:55Z","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":"cd02b8566bc75a11e90f8d3169687818c1ef018c86027597a02cf03c82491d73","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-03-04T23:11:51Z","title_canon_sha256":"ee019d9ad464d2bcbe9026765fa98fa7c74e18bca0a908add5c469646d5d6eef"},"schema_version":"1.0","source":{"id":"1403.0972","kind":"arxiv","version":2}},"canonical_sha256":"abc4d6503a1848572605e52614a89d2a700534ed38ce17a4eb9e7ffff14439b0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"abc4d6503a1848572605e52614a89d2a700534ed38ce17a4eb9e7ffff14439b0","first_computed_at":"2026-05-18T02:45:55.781386Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:45:55.781386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"COZnp/OgBAbq0tKaddK3jwncAmassoYzmw2Oelrz3iCfneOLW4nXXkCzMgYFCCYwGisvdZon4ws2cGYPgmuECQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:45:55.782015Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.0972","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5184f40f76f92779a434d88aa95f417c301f0b1cc6acd7ae76f11b71590539b","sha256:9ea0c0cf6b895aaa33512c95282c499b37e812268347a8ede9d11f885c38ed45"],"state_sha256":"24be0709a3b0d62c6e37e7b6c3d7bfb29e1e0b52b0e583b20f5d41e70c44d55c"}