{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:QY63DGJO4POILT7KCNQWP53ARB","short_pith_number":"pith:QY63DGJO","canonical_record":{"source":{"id":"2205.00747","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-05-02T08:53:12Z","cross_cats_sorted":[],"title_canon_sha256":"c7eead1f6c7f93c201aff2e873e01c595e03bb523571e573db4b343ee6c0dd67","abstract_canon_sha256":"70a6075a67a455a4b9fc89068effa8146badeab5beba14a61c22d36fee058b72"},"schema_version":"1.0"},"canonical_sha256":"863db1992ee3dc85cfea136167f76088757b6629ceabaad993cc46f06f591044","source":{"kind":"arxiv","id":"2205.00747","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.00747","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"arxiv_version","alias_value":"2205.00747v1","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.00747","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"pith_short_12","alias_value":"QY63DGJO4POI","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"pith_short_16","alias_value":"QY63DGJO4POILT7K","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"pith_short_8","alias_value":"QY63DGJO","created_at":"2026-07-05T04:39:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:QY63DGJO4POILT7KCNQWP53ARB","target":"record","payload":{"canonical_record":{"source":{"id":"2205.00747","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-05-02T08:53:12Z","cross_cats_sorted":[],"title_canon_sha256":"c7eead1f6c7f93c201aff2e873e01c595e03bb523571e573db4b343ee6c0dd67","abstract_canon_sha256":"70a6075a67a455a4b9fc89068effa8146badeab5beba14a61c22d36fee058b72"},"schema_version":"1.0"},"canonical_sha256":"863db1992ee3dc85cfea136167f76088757b6629ceabaad993cc46f06f591044","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:39:36.443294Z","signature_b64":"vkxOeIBYN/zu58NGlSjZUe422QNgyopRWFxJJzkllg73BiY2GL+PwJ/bRFIznJdnAPqbn9NG4qs2MrbZd2PTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"863db1992ee3dc85cfea136167f76088757b6629ceabaad993cc46f06f591044","last_reissued_at":"2026-07-05T04:39:36.442819Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:39:36.442819Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2205.00747","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":"2026-07-05T04:39:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GOZxYVHwHeFb88fHJcVRzrmiPG3Nk0cpsZ6rSfVU4ZX6lXP7pgWplPyLjk9kbAqPjNdRkqyxi9SbcmPXNBT8Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:05:37.078754Z"},"content_sha256":"b020489f80d8b3827aaf3cdb3f81d2498a20926d36ae2e52e20838231c75751c","schema_version":"1.0","event_id":"sha256:b020489f80d8b3827aaf3cdb3f81d2498a20926d36ae2e52e20838231c75751c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:QY63DGJO4POILT7KCNQWP53ARB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chalcogenide Perovskites: An Emerging Class of Semiconductors for Optoelectronics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Pooja Basera, Saswata Bhattacharya","submitted_at":"2022-05-02T08:53:12Z","abstract_excerpt":"Chalcogenide perovskites have received considerable interest in photovoltaic research community owing to their stability (thermal and aqueous), non-toxicity and lead free composition. However, to date a theoretical study mainly focusing on the excitonic and polaronic properties are not explored rigorously, due to its huge computational demand. Herein, we capture the excitonic and polaronic effects in a series of chalcogenide perovskites ABS$_3$ where A=Ba, Ca, Sr, and B=Hf, Sn by employing state-of-the art hybrid density functional theory and many body perturbative approaches viz. GW and BSE. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.00747","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2205.00747/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:39:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hoLNrEwE032VAzJHLfwFvSOrCt+5DJRzmxvxYR73AEAEBrHHraI1a5IDQiBNQOx3fTr1qi6MftkMdojBk+PDCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:05:37.079258Z"},"content_sha256":"1385611221a544481e7c4db8bae4470b8dac652c8b84090fb305ed0604874e8a","schema_version":"1.0","event_id":"sha256:1385611221a544481e7c4db8bae4470b8dac652c8b84090fb305ed0604874e8a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QY63DGJO4POILT7KCNQWP53ARB/bundle.json","state_url":"https://pith.science/pith/QY63DGJO4POILT7KCNQWP53ARB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QY63DGJO4POILT7KCNQWP53ARB/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":"2026-08-05T07:05:37Z","links":{"resolver":"https://pith.science/pith/QY63DGJO4POILT7KCNQWP53ARB","bundle":"https://pith.science/pith/QY63DGJO4POILT7KCNQWP53ARB/bundle.json","state":"https://pith.science/pith/QY63DGJO4POILT7KCNQWP53ARB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QY63DGJO4POILT7KCNQWP53ARB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:QY63DGJO4POILT7KCNQWP53ARB","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":"70a6075a67a455a4b9fc89068effa8146badeab5beba14a61c22d36fee058b72","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-05-02T08:53:12Z","title_canon_sha256":"c7eead1f6c7f93c201aff2e873e01c595e03bb523571e573db4b343ee6c0dd67"},"schema_version":"1.0","source":{"id":"2205.00747","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.00747","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"arxiv_version","alias_value":"2205.00747v1","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.00747","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"pith_short_12","alias_value":"QY63DGJO4POI","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"pith_short_16","alias_value":"QY63DGJO4POILT7K","created_at":"2026-07-05T04:39:36Z"},{"alias_kind":"pith_short_8","alias_value":"QY63DGJO","created_at":"2026-07-05T04:39:36Z"}],"graph_snapshots":[{"event_id":"sha256:1385611221a544481e7c4db8bae4470b8dac652c8b84090fb305ed0604874e8a","target":"graph","created_at":"2026-07-05T04:39:36Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2205.00747/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Chalcogenide perovskites have received considerable interest in photovoltaic research community owing to their stability (thermal and aqueous), non-toxicity and lead free composition. However, to date a theoretical study mainly focusing on the excitonic and polaronic properties are not explored rigorously, due to its huge computational demand. Herein, we capture the excitonic and polaronic effects in a series of chalcogenide perovskites ABS$_3$ where A=Ba, Ca, Sr, and B=Hf, Sn by employing state-of-the art hybrid density functional theory and many body perturbative approaches viz. GW and BSE. ","authors_text":"Pooja Basera, Saswata Bhattacharya","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-05-02T08:53:12Z","title":"Chalcogenide Perovskites: An Emerging Class of Semiconductors for Optoelectronics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.00747","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:b020489f80d8b3827aaf3cdb3f81d2498a20926d36ae2e52e20838231c75751c","target":"record","created_at":"2026-07-05T04:39:36Z","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":"70a6075a67a455a4b9fc89068effa8146badeab5beba14a61c22d36fee058b72","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-05-02T08:53:12Z","title_canon_sha256":"c7eead1f6c7f93c201aff2e873e01c595e03bb523571e573db4b343ee6c0dd67"},"schema_version":"1.0","source":{"id":"2205.00747","kind":"arxiv","version":1}},"canonical_sha256":"863db1992ee3dc85cfea136167f76088757b6629ceabaad993cc46f06f591044","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"863db1992ee3dc85cfea136167f76088757b6629ceabaad993cc46f06f591044","first_computed_at":"2026-07-05T04:39:36.442819Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:39:36.442819Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vkxOeIBYN/zu58NGlSjZUe422QNgyopRWFxJJzkllg73BiY2GL+PwJ/bRFIznJdnAPqbn9NG4qs2MrbZd2PTBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:39:36.443294Z","signed_message":"canonical_sha256_bytes"},"source_id":"2205.00747","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b020489f80d8b3827aaf3cdb3f81d2498a20926d36ae2e52e20838231c75751c","sha256:1385611221a544481e7c4db8bae4470b8dac652c8b84090fb305ed0604874e8a"],"state_sha256":"9e5d1b9e5c95924facf9ce803d64fd03bee56abcdcc26db3f79d58c4078ed4e2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yLp6k0FuaaLjJhfpXXdAZP/YamYaILvHA/JS4S4XS112L1ZvgRf5xHUPhANk2Agvmv5w4Z+fdODM1tk1Z6gvBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T07:05:37.083608Z","bundle_sha256":"761489da924420e0e4e52e508c47d4418029d3ec29cc4db9220b5a5143bf4e92"}}