{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:OTHYRAVZWFQB4DWNJYFQZGF63O","short_pith_number":"pith:OTHYRAVZ","canonical_record":{"source":{"id":"1312.0710","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-12-03T06:37:50Z","cross_cats_sorted":[],"title_canon_sha256":"3e2c5688b495f2295b63d2bb80a38b8d3df5e11e8248dc7522ba5f29d5e19edb","abstract_canon_sha256":"5614cbc11f114e165118787d1f20381373f91328e534e2cbddc84308eeb8e0de"},"schema_version":"1.0"},"canonical_sha256":"74cf8882b9b1601e0ecd4e0b0c98bedbad9650bd3597757628f3d911db3eb74b","source":{"kind":"arxiv","id":"1312.0710","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.0710","created_at":"2026-05-18T02:54:28Z"},{"alias_kind":"arxiv_version","alias_value":"1312.0710v2","created_at":"2026-05-18T02:54:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.0710","created_at":"2026-05-18T02:54:28Z"},{"alias_kind":"pith_short_12","alias_value":"OTHYRAVZWFQB","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OTHYRAVZWFQB4DWN","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OTHYRAVZ","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:OTHYRAVZWFQB4DWNJYFQZGF63O","target":"record","payload":{"canonical_record":{"source":{"id":"1312.0710","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-12-03T06:37:50Z","cross_cats_sorted":[],"title_canon_sha256":"3e2c5688b495f2295b63d2bb80a38b8d3df5e11e8248dc7522ba5f29d5e19edb","abstract_canon_sha256":"5614cbc11f114e165118787d1f20381373f91328e534e2cbddc84308eeb8e0de"},"schema_version":"1.0"},"canonical_sha256":"74cf8882b9b1601e0ecd4e0b0c98bedbad9650bd3597757628f3d911db3eb74b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:54:28.007603Z","signature_b64":"WOg9t/VK1apWnT5tSzbogHk9Kz9JMl83czkLN7+3XmO1xIjpaIvzglGYbewinailYwvd4NnAIGP0kKUhfhGTAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"74cf8882b9b1601e0ecd4e0b0c98bedbad9650bd3597757628f3d911db3eb74b","last_reissued_at":"2026-05-18T02:54:28.007104Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:54:28.007104Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.0710","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":"2026-05-18T02:54:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jypXF03SWCEs7kFmtW8VY1MZ2z6Ou1Gp/XkjnUruowVryoVFNkNxbpET+sLPit0gl1fr/gCT+uHikypEHYWvDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:21:03.171374Z"},"content_sha256":"00b394020340ed9879fbb8dbe3723d7f08a8b3aad6b761e5cc81aed910fa74f5","schema_version":"1.0","event_id":"sha256:00b394020340ed9879fbb8dbe3723d7f08a8b3aad6b761e5cc81aed910fa74f5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:OTHYRAVZWFQB4DWNJYFQZGF63O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multilayer nanoparticle arrays for broad spectrum absorption enhancement in thin film solar cells","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Aravind Krishnan, Mohammed Zafar Ali Khan, Siva Rama Krishna, Snehal Das","submitted_at":"2013-12-03T06:37:50Z","abstract_excerpt":"In this paper, we present a theoretical study on the absorption efficiency enhancement of a thin film amorphous Silicon (a-Si) photovoltaic cell over a broad spectrum of wavelengths using multiple nanoparticle arrays. The light absorption efficiency is enhanced in the lower wavelengths by a nanoparticle array on the surface and in the higher wavelengths by another nanoparticle array embedded in the active region. The efficiency at intermediate wavelengths is enhanced by the simultaneous resonance from both nanoparticle layers. We optimize this design by tuning the radius of particles in both a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.0710","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":"2026-05-18T02:54:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ufsCa4D+pf1yc/XuKVkcqMmo19vF3hnZj81WMEXKANphoPLCdyd6iUtm5li6FWCVvR/AkxqLLXmCo5HVfu6WCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:21:03.171743Z"},"content_sha256":"ba96aaf38c1ed2a0263fcb212df892f73d123bf3a81ed510d49a6371d73a6ee1","schema_version":"1.0","event_id":"sha256:ba96aaf38c1ed2a0263fcb212df892f73d123bf3a81ed510d49a6371d73a6ee1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OTHYRAVZWFQB4DWNJYFQZGF63O/bundle.json","state_url":"https://pith.science/pith/OTHYRAVZWFQB4DWNJYFQZGF63O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OTHYRAVZWFQB4DWNJYFQZGF63O/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":"2026-06-03T05:21:03Z","links":{"resolver":"https://pith.science/pith/OTHYRAVZWFQB4DWNJYFQZGF63O","bundle":"https://pith.science/pith/OTHYRAVZWFQB4DWNJYFQZGF63O/bundle.json","state":"https://pith.science/pith/OTHYRAVZWFQB4DWNJYFQZGF63O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OTHYRAVZWFQB4DWNJYFQZGF63O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OTHYRAVZWFQB4DWNJYFQZGF63O","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":"5614cbc11f114e165118787d1f20381373f91328e534e2cbddc84308eeb8e0de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-12-03T06:37:50Z","title_canon_sha256":"3e2c5688b495f2295b63d2bb80a38b8d3df5e11e8248dc7522ba5f29d5e19edb"},"schema_version":"1.0","source":{"id":"1312.0710","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.0710","created_at":"2026-05-18T02:54:28Z"},{"alias_kind":"arxiv_version","alias_value":"1312.0710v2","created_at":"2026-05-18T02:54:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.0710","created_at":"2026-05-18T02:54:28Z"},{"alias_kind":"pith_short_12","alias_value":"OTHYRAVZWFQB","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OTHYRAVZWFQB4DWN","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OTHYRAVZ","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:ba96aaf38c1ed2a0263fcb212df892f73d123bf3a81ed510d49a6371d73a6ee1","target":"graph","created_at":"2026-05-18T02:54:28Z","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 paper, we present a theoretical study on the absorption efficiency enhancement of a thin film amorphous Silicon (a-Si) photovoltaic cell over a broad spectrum of wavelengths using multiple nanoparticle arrays. The light absorption efficiency is enhanced in the lower wavelengths by a nanoparticle array on the surface and in the higher wavelengths by another nanoparticle array embedded in the active region. The efficiency at intermediate wavelengths is enhanced by the simultaneous resonance from both nanoparticle layers. We optimize this design by tuning the radius of particles in both a","authors_text":"Aravind Krishnan, Mohammed Zafar Ali Khan, Siva Rama Krishna, Snehal Das","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-12-03T06:37:50Z","title":"Multilayer nanoparticle arrays for broad spectrum absorption enhancement in thin film solar cells"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.0710","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":"sha256:00b394020340ed9879fbb8dbe3723d7f08a8b3aad6b761e5cc81aed910fa74f5","target":"record","created_at":"2026-05-18T02:54:28Z","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":"5614cbc11f114e165118787d1f20381373f91328e534e2cbddc84308eeb8e0de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-12-03T06:37:50Z","title_canon_sha256":"3e2c5688b495f2295b63d2bb80a38b8d3df5e11e8248dc7522ba5f29d5e19edb"},"schema_version":"1.0","source":{"id":"1312.0710","kind":"arxiv","version":2}},"canonical_sha256":"74cf8882b9b1601e0ecd4e0b0c98bedbad9650bd3597757628f3d911db3eb74b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"74cf8882b9b1601e0ecd4e0b0c98bedbad9650bd3597757628f3d911db3eb74b","first_computed_at":"2026-05-18T02:54:28.007104Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:54:28.007104Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WOg9t/VK1apWnT5tSzbogHk9Kz9JMl83czkLN7+3XmO1xIjpaIvzglGYbewinailYwvd4NnAIGP0kKUhfhGTAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:54:28.007603Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.0710","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:00b394020340ed9879fbb8dbe3723d7f08a8b3aad6b761e5cc81aed910fa74f5","sha256:ba96aaf38c1ed2a0263fcb212df892f73d123bf3a81ed510d49a6371d73a6ee1"],"state_sha256":"9c37e487d23719ed07fad5b53c51f2e047f2444050d31aec0908807f147e5411"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ISrH5kp3wLxSYCLZ0Wu3BT4rMHeC9p7l3L4/tDZGdXyXiS7aUvNRZpqaK045OSi+u9wleyda6hKJvbfmJmG8Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T05:21:03.173730Z","bundle_sha256":"a0f8b4000a4a316bef5bd136333506d435a7a385d791885f0e43ad251edeff7a"}}