{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:DIUUDRFF5QIX533SFGWE65IP5Q","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":"e814460da386cff91078850e68187d0e0903c19b56a70ceafec33b1689ca3084","cross_cats_sorted":["cond-mat.mtrl-sci","physics.app-ph","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-06-08T19:15:59Z","title_canon_sha256":"b9f53536186bbbe5ff718d0aca81bdfa36e682bbea8a400ee4117ac8321decf6"},"schema_version":"1.0","source":{"id":"1706.02700","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.02700","created_at":"2026-05-18T00:42:44Z"},{"alias_kind":"arxiv_version","alias_value":"1706.02700v1","created_at":"2026-05-18T00:42:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.02700","created_at":"2026-05-18T00:42:44Z"},{"alias_kind":"pith_short_12","alias_value":"DIUUDRFF5QIX","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"DIUUDRFF5QIX533S","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"DIUUDRFF","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:fc4b29abd272e542a97605ea250bdd63732c6ea57b28aef62977f84c60ca7c76","target":"graph","created_at":"2026-05-18T00:42:44Z","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 report experimental measurements for ultrathin (< 15 nm) van der Waals heterostructures exhibiting external quantum efficiencies exceeding 50%, and show that these structures can achieve experimental absorbance > 90%. By coupling electromagnetic simulations and experimental measurements, we show that pn WSe2/MoS2 heterojunctions with vertical carrier collection can have internal photocarrier collection efficiencies exceeding 70%.","authors_text":"Artur R. Davoyan, Deep Jariwala, Giulia Tagliabue, Harry A. Atwater, Joeson Wong, Kevin Tat, Michelle C. Sherrott","cross_cats":["cond-mat.mtrl-sci","physics.app-ph","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-06-08T19:15:59Z","title":"High Photovoltaic Quantum Efficiency in Ultrathin van der Waals Heterostructures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.02700","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":"sha256:095d67835516ec00cdfd01e532e1bc7b9e9d5dc55921c1882cc23a3ee8482ca1","target":"record","created_at":"2026-05-18T00:42:44Z","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":"e814460da386cff91078850e68187d0e0903c19b56a70ceafec33b1689ca3084","cross_cats_sorted":["cond-mat.mtrl-sci","physics.app-ph","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-06-08T19:15:59Z","title_canon_sha256":"b9f53536186bbbe5ff718d0aca81bdfa36e682bbea8a400ee4117ac8321decf6"},"schema_version":"1.0","source":{"id":"1706.02700","kind":"arxiv","version":1}},"canonical_sha256":"1a2941c4a5ec117eef7229ac4f750fec1fb3ee4bb023e3967b380a7858077f0c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1a2941c4a5ec117eef7229ac4f750fec1fb3ee4bb023e3967b380a7858077f0c","first_computed_at":"2026-05-18T00:42:44.812560Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:44.812560Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RImX8Rnc0gAwstNrj7eAY7ny7cRaBuCtmCFgxT2NasZ5BAVtpl0aMrfEVDotDbBHWxDUH9sorZ/P1TG0vUOICg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:44.813132Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.02700","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:095d67835516ec00cdfd01e532e1bc7b9e9d5dc55921c1882cc23a3ee8482ca1","sha256:fc4b29abd272e542a97605ea250bdd63732c6ea57b28aef62977f84c60ca7c76"],"state_sha256":"9a0fefb1f21f649782a68156736d545009fb2db57d3f9bb08c9ec69c901c7278"}