{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:6U7AXAF7GRMYJWS2DN4NRNA3UH","short_pith_number":"pith:6U7AXAF7","canonical_record":{"source":{"id":"1207.1179","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-07-05T07:48:08Z","cross_cats_sorted":[],"title_canon_sha256":"25303222815e08282435178fb60f0e6f2fabb2966b0a8d1f4b43fbda98b10ad6","abstract_canon_sha256":"ea88977ba439291e6e87d3e1e93ad0f5a13c1ac0382d1bb39857287312638ff5"},"schema_version":"1.0"},"canonical_sha256":"f53e0b80bf345984da5a1b78d8b41ba1fc6e52159c1390b6ac2a0680f38f952e","source":{"kind":"arxiv","id":"1207.1179","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1179","created_at":"2026-05-18T01:56:34Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1179v2","created_at":"2026-05-18T01:56:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1179","created_at":"2026-05-18T01:56:34Z"},{"alias_kind":"pith_short_12","alias_value":"6U7AXAF7GRMY","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6U7AXAF7GRMYJWS2","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6U7AXAF7","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:6U7AXAF7GRMYJWS2DN4NRNA3UH","target":"record","payload":{"canonical_record":{"source":{"id":"1207.1179","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-07-05T07:48:08Z","cross_cats_sorted":[],"title_canon_sha256":"25303222815e08282435178fb60f0e6f2fabb2966b0a8d1f4b43fbda98b10ad6","abstract_canon_sha256":"ea88977ba439291e6e87d3e1e93ad0f5a13c1ac0382d1bb39857287312638ff5"},"schema_version":"1.0"},"canonical_sha256":"f53e0b80bf345984da5a1b78d8b41ba1fc6e52159c1390b6ac2a0680f38f952e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:34.512272Z","signature_b64":"o97kvIEIEx7sUc9pDf1cXTYQyLLmC9ZVNlSFIkPKEUU9OppVBn1NCW/fD3nxG7rjfauO8e+0TRrHLu5KYfbYAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f53e0b80bf345984da5a1b78d8b41ba1fc6e52159c1390b6ac2a0680f38f952e","last_reissued_at":"2026-05-18T01:56:34.511606Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:34.511606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.1179","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:56:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O+HTwTur7/FNFPqVsi7uBJPiLyZOf04wYTx3L2a16j8VZQAt4shWi0EW3+/nYx9N4BM+FfYwTmG5Azki5RRDDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:08:40.594022Z"},"content_sha256":"f1e954fe58559d1c4ca75319a660213c9f7812ea10b27c23842b9d245924718c","schema_version":"1.0","event_id":"sha256:f1e954fe58559d1c4ca75319a660213c9f7812ea10b27c23842b9d245924718c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:6U7AXAF7GRMYJWS2DN4NRNA3UH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Thickness dependent effects of an intermediate molecular blocking layer on the optoelectronic characteristics of organic bilayer photovoltaic cells","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. K. Topczak, A. Steindamm, J. Pflaum, M. Brendel","submitted_at":"2012-07-05T07:48:08Z","abstract_excerpt":"In this work we address the microscopic effects related to the implementation of a Bathophenanthroline (BPhen) exciton blocking layer (EBL) sandwiched between Ag cathode and molecular Diindenoperylene (DIP)/C60 bilayer of a photovoltaic cell. Complementary studies of current density, external quantum efficiency, and photoluminescence quenching for EBL thicknesses up to 50 nm indicate that Ag atoms are able to penetrate through the whole 35 nm thick C60 film into the crystalline DIP layer underneath, thereby enhancing exciton quenching if no blocking layer is applied. In contrast, an optimal tr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1179","kind":"arxiv","version":2},"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":"2026-05-18T01:56:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LVSHRwadz9Bohela5NET2ZsZZf81o71P22yum584Vo8AaDfpOQ0zZ5s/IIR2x62uvB1npoqrDgBTcYMOylw0Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:08:40.594770Z"},"content_sha256":"9bf1434e1dbdba6d70e7206c3fd3cb89b775a20b84c0f42d5bcb1c86058390cd","schema_version":"1.0","event_id":"sha256:9bf1434e1dbdba6d70e7206c3fd3cb89b775a20b84c0f42d5bcb1c86058390cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6U7AXAF7GRMYJWS2DN4NRNA3UH/bundle.json","state_url":"https://pith.science/pith/6U7AXAF7GRMYJWS2DN4NRNA3UH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6U7AXAF7GRMYJWS2DN4NRNA3UH/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":"2026-06-12T00:08:40Z","links":{"resolver":"https://pith.science/pith/6U7AXAF7GRMYJWS2DN4NRNA3UH","bundle":"https://pith.science/pith/6U7AXAF7GRMYJWS2DN4NRNA3UH/bundle.json","state":"https://pith.science/pith/6U7AXAF7GRMYJWS2DN4NRNA3UH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6U7AXAF7GRMYJWS2DN4NRNA3UH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:6U7AXAF7GRMYJWS2DN4NRNA3UH","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":"ea88977ba439291e6e87d3e1e93ad0f5a13c1ac0382d1bb39857287312638ff5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-07-05T07:48:08Z","title_canon_sha256":"25303222815e08282435178fb60f0e6f2fabb2966b0a8d1f4b43fbda98b10ad6"},"schema_version":"1.0","source":{"id":"1207.1179","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1179","created_at":"2026-05-18T01:56:34Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1179v2","created_at":"2026-05-18T01:56:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1179","created_at":"2026-05-18T01:56:34Z"},{"alias_kind":"pith_short_12","alias_value":"6U7AXAF7GRMY","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6U7AXAF7GRMYJWS2","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6U7AXAF7","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:9bf1434e1dbdba6d70e7206c3fd3cb89b775a20b84c0f42d5bcb1c86058390cd","target":"graph","created_at":"2026-05-18T01:56:34Z","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 address the microscopic effects related to the implementation of a Bathophenanthroline (BPhen) exciton blocking layer (EBL) sandwiched between Ag cathode and molecular Diindenoperylene (DIP)/C60 bilayer of a photovoltaic cell. Complementary studies of current density, external quantum efficiency, and photoluminescence quenching for EBL thicknesses up to 50 nm indicate that Ag atoms are able to penetrate through the whole 35 nm thick C60 film into the crystalline DIP layer underneath, thereby enhancing exciton quenching if no blocking layer is applied. In contrast, an optimal tr","authors_text":"A. K. Topczak, A. Steindamm, J. Pflaum, M. Brendel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-07-05T07:48:08Z","title":"Thickness dependent effects of an intermediate molecular blocking layer on the optoelectronic characteristics of organic bilayer photovoltaic cells"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1179","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:f1e954fe58559d1c4ca75319a660213c9f7812ea10b27c23842b9d245924718c","target":"record","created_at":"2026-05-18T01:56:34Z","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":"ea88977ba439291e6e87d3e1e93ad0f5a13c1ac0382d1bb39857287312638ff5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-07-05T07:48:08Z","title_canon_sha256":"25303222815e08282435178fb60f0e6f2fabb2966b0a8d1f4b43fbda98b10ad6"},"schema_version":"1.0","source":{"id":"1207.1179","kind":"arxiv","version":2}},"canonical_sha256":"f53e0b80bf345984da5a1b78d8b41ba1fc6e52159c1390b6ac2a0680f38f952e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f53e0b80bf345984da5a1b78d8b41ba1fc6e52159c1390b6ac2a0680f38f952e","first_computed_at":"2026-05-18T01:56:34.511606Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:34.511606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o97kvIEIEx7sUc9pDf1cXTYQyLLmC9ZVNlSFIkPKEUU9OppVBn1NCW/fD3nxG7rjfauO8e+0TRrHLu5KYfbYAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:34.512272Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.1179","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f1e954fe58559d1c4ca75319a660213c9f7812ea10b27c23842b9d245924718c","sha256:9bf1434e1dbdba6d70e7206c3fd3cb89b775a20b84c0f42d5bcb1c86058390cd"],"state_sha256":"0abc75527cdf19c7b6b7c90490fc5bef6c688ab06e122e60989b998d48b0e6e2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GlduZXnFzAbixEA93Y4KtWOBya9mmB8Ljm+udBwrwWly1me8xxVEZOtfuk7JWJYxYDfyfx+AdFD4sEXDxoGXBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T00:08:40.598500Z","bundle_sha256":"ee0101fff18f0a8ebe00248813fb923756c6288845e89711a6a27f273cb9d8f4"}}