{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:BVYOSCO4B2APOK6MZMRJHJXWS2","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":"9c02d26a4c79eaebd887ba4e5a3e92672c7ad00378918869c42b91f004a814ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-12T10:45:00Z","title_canon_sha256":"9d79b390373cb31fb984206b2d53169e24f25a1dcf1b5761f29e66affff4245a"},"schema_version":"1.0","source":{"id":"1303.2833","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.2833","created_at":"2026-05-18T03:27:02Z"},{"alias_kind":"arxiv_version","alias_value":"1303.2833v2","created_at":"2026-05-18T03:27:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.2833","created_at":"2026-05-18T03:27:02Z"},{"alias_kind":"pith_short_12","alias_value":"BVYOSCO4B2AP","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"BVYOSCO4B2APOK6M","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"BVYOSCO4","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:408e07ccbed11956f30e54e8fad03b7f488ccdee874d945870f45bcb63e93a2d","target":"graph","created_at":"2026-05-18T03:27:02Z","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":"We introduce a limit for the strength of coupling light into the modes of solar cells. This limit depends on both a cell's thickness and its modal properties. For a cell with refractive index n and thickness d, we obtain a maximal coupling rate of 2c*sqrt(n^2-1)/d where c is speed of light. Our method can be used in the design of solar cells and in calculating their efficiency limits; besides, it can be applied to a broad variety of resonant phenomena and devices.","authors_text":"A. Naqavi, C. Ballif, F.-J. Haug, H. P. Herzig, T. Scharf","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-12T10:45:00Z","title":"Limit of light coupling strength in solar cells"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.2833","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:fc5d08e15415ffd5ccf518e16091c50ac32705303b43be1effe5e7266f5c2a20","target":"record","created_at":"2026-05-18T03:27:02Z","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":"9c02d26a4c79eaebd887ba4e5a3e92672c7ad00378918869c42b91f004a814ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-12T10:45:00Z","title_canon_sha256":"9d79b390373cb31fb984206b2d53169e24f25a1dcf1b5761f29e66affff4245a"},"schema_version":"1.0","source":{"id":"1303.2833","kind":"arxiv","version":2}},"canonical_sha256":"0d70e909dc0e80f72bcccb2293a6f696b581cf804176a5f83968ff0d79316dac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0d70e909dc0e80f72bcccb2293a6f696b581cf804176a5f83968ff0d79316dac","first_computed_at":"2026-05-18T03:27:02.959735Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:27:02.959735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LkHRQj6Dn0Hc0DwcteCZlvZQmRmUT91teqrbq1oO45ADPotj6nGZyidXtAfHMiiI34lV1kbLpMbI8iswNvYuCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:27:02.960145Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.2833","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc5d08e15415ffd5ccf518e16091c50ac32705303b43be1effe5e7266f5c2a20","sha256:408e07ccbed11956f30e54e8fad03b7f488ccdee874d945870f45bcb63e93a2d"],"state_sha256":"08bb7f93553fc68a47fa636305e7ac435a8aa46a406cd5ce244a0b094c6149bf"}