{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZZY5NSM2DYEIM7LUWHOAR73TAO","short_pith_number":"pith:ZZY5NSM2","canonical_record":{"source":{"id":"1808.04979","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-15T06:31:10Z","cross_cats_sorted":[],"title_canon_sha256":"6690185cf370b1f23ef0cc34832d684782a1c68044bffd0b422a0270cf8e9c15","abstract_canon_sha256":"f5616b7d7ffefa1c22d8089ca773fb3e5d734a7b8d37774aa8d98e5a2e229354"},"schema_version":"1.0"},"canonical_sha256":"ce71d6c99a1e08867d74b1dc08ff73039636cbec2db14774617f5a21b1a96651","source":{"kind":"arxiv","id":"1808.04979","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.04979","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"arxiv_version","alias_value":"1808.04979v2","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.04979","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"pith_short_12","alias_value":"ZZY5NSM2DYEI","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZZY5NSM2DYEIM7LU","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZZY5NSM2","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZZY5NSM2DYEIM7LUWHOAR73TAO","target":"record","payload":{"canonical_record":{"source":{"id":"1808.04979","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-15T06:31:10Z","cross_cats_sorted":[],"title_canon_sha256":"6690185cf370b1f23ef0cc34832d684782a1c68044bffd0b422a0270cf8e9c15","abstract_canon_sha256":"f5616b7d7ffefa1c22d8089ca773fb3e5d734a7b8d37774aa8d98e5a2e229354"},"schema_version":"1.0"},"canonical_sha256":"ce71d6c99a1e08867d74b1dc08ff73039636cbec2db14774617f5a21b1a96651","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:32.191924Z","signature_b64":"36bOJMof82GyDLXzqRoqicbrK0jg/f7R15w7nwK2QBmbb7LaFmoVwvOlCSiTJSrvLJbKF2bA00tsCzOOk/N6BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce71d6c99a1e08867d74b1dc08ff73039636cbec2db14774617f5a21b1a96651","last_reissued_at":"2026-05-18T00:07:32.191069Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:32.191069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.04979","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":"2026-05-18T00:07:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WVadNOqI8jl2dd12/ar4u6rDtdHF4IN8Xhs2NHWe0hkdVO39PGP/uHUnWc84o1hyIH6/xo/LeoPLFWhEapQ6CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T22:01:19.327741Z"},"content_sha256":"f428b067e942ef9c7354cdb6d53003389638b6ca8e7c20e17979fc5c3dc9167c","schema_version":"1.0","event_id":"sha256:f428b067e942ef9c7354cdb6d53003389638b6ca8e7c20e17979fc5c3dc9167c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZZY5NSM2DYEIM7LUWHOAR73TAO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"La-Doped BaSnO$_3$ Electron Transport Layer for Perovskite Solar Cells","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Chang Woo Myung, Geunsik Lee, Kwang S. Kim","submitted_at":"2018-08-15T06:31:10Z","abstract_excerpt":"Due to the photo-instability and hysteresis of TiO$_2$ electron transport layer (ETL) in perovskite solar cells (PSCs), novel electron transport materials are highly demanded. Here, we show ideal band alignment between La-doped BaSnO$_3$ (LBSO) and methyl ammonium (MA) lead iodide perovskite (MAPbI$_3$). The CH$_3$NH$_3$PbI$_3$/La$_x$Ba$_{(1-x)}$SnO$_3$ interface forms a stable all-perovskite heterostructure. The selective band alignment is manipulated with band gap renormalization by La-doping on the Ba site. LBSO shows high mobility, photo-stability, and structural stability, promising the n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.04979","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":"2026-05-18T00:07:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/fde47KabMx/t9/N8y/l6bYhkP48VeON3t/ZiF78XXvx2JEvQzSkUjQSjtvPMfuwUl/zFC68fzx/ra99eP/0BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T22:01:19.328361Z"},"content_sha256":"6f7e54ffa5aa1a11f82ed9d1929eadd206f4ab89ac71d99520979523fd546f82","schema_version":"1.0","event_id":"sha256:6f7e54ffa5aa1a11f82ed9d1929eadd206f4ab89ac71d99520979523fd546f82"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZZY5NSM2DYEIM7LUWHOAR73TAO/bundle.json","state_url":"https://pith.science/pith/ZZY5NSM2DYEIM7LUWHOAR73TAO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZZY5NSM2DYEIM7LUWHOAR73TAO/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":"2026-05-19T22:01:19Z","links":{"resolver":"https://pith.science/pith/ZZY5NSM2DYEIM7LUWHOAR73TAO","bundle":"https://pith.science/pith/ZZY5NSM2DYEIM7LUWHOAR73TAO/bundle.json","state":"https://pith.science/pith/ZZY5NSM2DYEIM7LUWHOAR73TAO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZZY5NSM2DYEIM7LUWHOAR73TAO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZZY5NSM2DYEIM7LUWHOAR73TAO","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":"f5616b7d7ffefa1c22d8089ca773fb3e5d734a7b8d37774aa8d98e5a2e229354","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-15T06:31:10Z","title_canon_sha256":"6690185cf370b1f23ef0cc34832d684782a1c68044bffd0b422a0270cf8e9c15"},"schema_version":"1.0","source":{"id":"1808.04979","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.04979","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"arxiv_version","alias_value":"1808.04979v2","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.04979","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"pith_short_12","alias_value":"ZZY5NSM2DYEI","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZZY5NSM2DYEIM7LU","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZZY5NSM2","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:6f7e54ffa5aa1a11f82ed9d1929eadd206f4ab89ac71d99520979523fd546f82","target":"graph","created_at":"2026-05-18T00:07:32Z","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":"Due to the photo-instability and hysteresis of TiO$_2$ electron transport layer (ETL) in perovskite solar cells (PSCs), novel electron transport materials are highly demanded. Here, we show ideal band alignment between La-doped BaSnO$_3$ (LBSO) and methyl ammonium (MA) lead iodide perovskite (MAPbI$_3$). The CH$_3$NH$_3$PbI$_3$/La$_x$Ba$_{(1-x)}$SnO$_3$ interface forms a stable all-perovskite heterostructure. The selective band alignment is manipulated with band gap renormalization by La-doping on the Ba site. LBSO shows high mobility, photo-stability, and structural stability, promising the n","authors_text":"Chang Woo Myung, Geunsik Lee, Kwang S. Kim","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-15T06:31:10Z","title":"La-Doped BaSnO$_3$ Electron Transport Layer for Perovskite Solar Cells"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.04979","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:f428b067e942ef9c7354cdb6d53003389638b6ca8e7c20e17979fc5c3dc9167c","target":"record","created_at":"2026-05-18T00:07:32Z","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":"f5616b7d7ffefa1c22d8089ca773fb3e5d734a7b8d37774aa8d98e5a2e229354","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-15T06:31:10Z","title_canon_sha256":"6690185cf370b1f23ef0cc34832d684782a1c68044bffd0b422a0270cf8e9c15"},"schema_version":"1.0","source":{"id":"1808.04979","kind":"arxiv","version":2}},"canonical_sha256":"ce71d6c99a1e08867d74b1dc08ff73039636cbec2db14774617f5a21b1a96651","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce71d6c99a1e08867d74b1dc08ff73039636cbec2db14774617f5a21b1a96651","first_computed_at":"2026-05-18T00:07:32.191069Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:32.191069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"36bOJMof82GyDLXzqRoqicbrK0jg/f7R15w7nwK2QBmbb7LaFmoVwvOlCSiTJSrvLJbKF2bA00tsCzOOk/N6BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:32.191924Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.04979","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f428b067e942ef9c7354cdb6d53003389638b6ca8e7c20e17979fc5c3dc9167c","sha256:6f7e54ffa5aa1a11f82ed9d1929eadd206f4ab89ac71d99520979523fd546f82"],"state_sha256":"c53866f1c4117f99ae8c8d5bca2f060575c6563edaa8c062130bfc88b3130ffe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B25h49DlwJ5NetcIWq3kmZKsiiWvN0eF8F0G9zHrmWO26Pb5sSLat30sPRtQWZ7FJ4w80Vb0VZ4KAIi9FqkoCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T22:01:19.331419Z","bundle_sha256":"1417b9082b9921dfa30d822f8c77535a88aabd777a8a9534a93f94500ba344a6"}}