{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:IQXXBGRTPWYHSRMGWLIKRM4FJZ","short_pith_number":"pith:IQXXBGRT","canonical_record":{"source":{"id":"1304.1957","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-04-07T05:07:54Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"892ee17ff7f3e5daf25dd26ec7c274820b1b64b45f8509e03e7038c52db5a9c7","abstract_canon_sha256":"bdefa575310e3f6389ad7e566e4273a650225acdd0862cea5e061a9314857960"},"schema_version":"1.0"},"canonical_sha256":"442f709a337db0794586b2d0a8b3854e684e6db9a2636178172a79808f3430d0","source":{"kind":"arxiv","id":"1304.1957","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.1957","created_at":"2026-05-18T02:37:43Z"},{"alias_kind":"arxiv_version","alias_value":"1304.1957v1","created_at":"2026-05-18T02:37:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.1957","created_at":"2026-05-18T02:37:43Z"},{"alias_kind":"pith_short_12","alias_value":"IQXXBGRTPWYH","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IQXXBGRTPWYHSRMG","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IQXXBGRT","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:IQXXBGRTPWYHSRMGWLIKRM4FJZ","target":"record","payload":{"canonical_record":{"source":{"id":"1304.1957","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-04-07T05:07:54Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"892ee17ff7f3e5daf25dd26ec7c274820b1b64b45f8509e03e7038c52db5a9c7","abstract_canon_sha256":"bdefa575310e3f6389ad7e566e4273a650225acdd0862cea5e061a9314857960"},"schema_version":"1.0"},"canonical_sha256":"442f709a337db0794586b2d0a8b3854e684e6db9a2636178172a79808f3430d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:37:43.040868Z","signature_b64":"YFWz6osB8sfUqEKjkvIKy/sgW2S6y0le6bTSi2IE09lsRqbZ//WUkPNXgaIGOC+uRH/mliy4zG1yEQHevzugAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"442f709a337db0794586b2d0a8b3854e684e6db9a2636178172a79808f3430d0","last_reissued_at":"2026-05-18T02:37:43.040462Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:37:43.040462Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.1957","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:37:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t6iQjWj78u7yKry20n6Pi5mPV7CQ3gWUoYEkq8TRDFTuj+I0vFamE0lBZnStRSif9K+BCzkVUApockK4IRXSDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T03:16:11.250166Z"},"content_sha256":"a9189af3d91e6bd7440b0b998cd58ea68e9a51d808afdd5480d9503e3dcc5df3","schema_version":"1.0","event_id":"sha256:a9189af3d91e6bd7440b0b998cd58ea68e9a51d808afdd5480d9503e3dcc5df3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:IQXXBGRTPWYHSRMGWLIKRM4FJZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulation of nanostructure-based high-efficiency solar cells: challenges, existing approaches and future directions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Urs Aeberhard","submitted_at":"2013-04-07T05:07:54Z","abstract_excerpt":"Many advanced concepts for high-efficiency photovoltaic devices exploit the peculiar optoelectronic properties of semiconductor nanostructures such as quantum wells, wires and dots. While the optics of such devices is only modestly affected due to the small size of the structures, the optical transitions and electronic transport can strongly deviate from the simple bulk picture known from conventional solar cell devices. This review article discusses the challenges for an adequate theoretical description of the photovoltaic device operation arising from the introduction of nanostructure absorb"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.1957","kind":"arxiv","version":1},"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":"2026-05-18T02:37:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TviATuaqS8c4b/Ti5i/+WORf08mpaY8lokCX/aZWl4IG6GKOwFxTW5uSiy8u38hnPxrSGC/jh8KaTzdFlwMqCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T03:16:11.250529Z"},"content_sha256":"dcebceb0bdb6bc920dd379a5eea07beb596cdd0d0727d371cac63fc4600a4f83","schema_version":"1.0","event_id":"sha256:dcebceb0bdb6bc920dd379a5eea07beb596cdd0d0727d371cac63fc4600a4f83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IQXXBGRTPWYHSRMGWLIKRM4FJZ/bundle.json","state_url":"https://pith.science/pith/IQXXBGRTPWYHSRMGWLIKRM4FJZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IQXXBGRTPWYHSRMGWLIKRM4FJZ/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":"2026-06-29T03:16:11Z","links":{"resolver":"https://pith.science/pith/IQXXBGRTPWYHSRMGWLIKRM4FJZ","bundle":"https://pith.science/pith/IQXXBGRTPWYHSRMGWLIKRM4FJZ/bundle.json","state":"https://pith.science/pith/IQXXBGRTPWYHSRMGWLIKRM4FJZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IQXXBGRTPWYHSRMGWLIKRM4FJZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:IQXXBGRTPWYHSRMGWLIKRM4FJZ","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":"bdefa575310e3f6389ad7e566e4273a650225acdd0862cea5e061a9314857960","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-04-07T05:07:54Z","title_canon_sha256":"892ee17ff7f3e5daf25dd26ec7c274820b1b64b45f8509e03e7038c52db5a9c7"},"schema_version":"1.0","source":{"id":"1304.1957","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.1957","created_at":"2026-05-18T02:37:43Z"},{"alias_kind":"arxiv_version","alias_value":"1304.1957v1","created_at":"2026-05-18T02:37:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.1957","created_at":"2026-05-18T02:37:43Z"},{"alias_kind":"pith_short_12","alias_value":"IQXXBGRTPWYH","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IQXXBGRTPWYHSRMG","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IQXXBGRT","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:dcebceb0bdb6bc920dd379a5eea07beb596cdd0d0727d371cac63fc4600a4f83","target":"graph","created_at":"2026-05-18T02:37:43Z","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":"Many advanced concepts for high-efficiency photovoltaic devices exploit the peculiar optoelectronic properties of semiconductor nanostructures such as quantum wells, wires and dots. While the optics of such devices is only modestly affected due to the small size of the structures, the optical transitions and electronic transport can strongly deviate from the simple bulk picture known from conventional solar cell devices. This review article discusses the challenges for an adequate theoretical description of the photovoltaic device operation arising from the introduction of nanostructure absorb","authors_text":"Urs Aeberhard","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-04-07T05:07:54Z","title":"Simulation of nanostructure-based high-efficiency solar cells: challenges, existing approaches and future directions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.1957","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:a9189af3d91e6bd7440b0b998cd58ea68e9a51d808afdd5480d9503e3dcc5df3","target":"record","created_at":"2026-05-18T02:37:43Z","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":"bdefa575310e3f6389ad7e566e4273a650225acdd0862cea5e061a9314857960","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-04-07T05:07:54Z","title_canon_sha256":"892ee17ff7f3e5daf25dd26ec7c274820b1b64b45f8509e03e7038c52db5a9c7"},"schema_version":"1.0","source":{"id":"1304.1957","kind":"arxiv","version":1}},"canonical_sha256":"442f709a337db0794586b2d0a8b3854e684e6db9a2636178172a79808f3430d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"442f709a337db0794586b2d0a8b3854e684e6db9a2636178172a79808f3430d0","first_computed_at":"2026-05-18T02:37:43.040462Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:37:43.040462Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YFWz6osB8sfUqEKjkvIKy/sgW2S6y0le6bTSi2IE09lsRqbZ//WUkPNXgaIGOC+uRH/mliy4zG1yEQHevzugAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:37:43.040868Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.1957","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9189af3d91e6bd7440b0b998cd58ea68e9a51d808afdd5480d9503e3dcc5df3","sha256:dcebceb0bdb6bc920dd379a5eea07beb596cdd0d0727d371cac63fc4600a4f83"],"state_sha256":"f14cf8d7f3c59d554b8a7165f38675d046e8daad24991ced40a6c91b99e04c02"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8CLNlvg8Qd+lSvQrIaF+niURncnZ1jKsAa/S4ErAlJ66oaQ6Qv+uAW5f1L3sq/4rC08hG1n7v4f/8ulXtSO6CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T03:16:11.252438Z","bundle_sha256":"3685b2d75f50faa0998c07b710ab887118eefa3f9d581d095138a0bda2dfc9cd"}}