{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:B2VBR3263KRFNWUS4RZ4GAFNXQ","short_pith_number":"pith:B2VBR326","canonical_record":{"source":{"id":"1806.07505","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T23:40:55Z","cross_cats_sorted":[],"title_canon_sha256":"8da303d9553ea850a15b0f832c94537d042332b00f8863ce362295c1e998ed3c","abstract_canon_sha256":"7169b3a576c807d03a0f89d40f88f92f808e2e83c21e2c24884191626ac8ae2e"},"schema_version":"1.0"},"canonical_sha256":"0eaa18ef5edaa256da92e473c300adbc3201f698fbb745d5151e924cb75fef5d","source":{"kind":"arxiv","id":"1806.07505","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.07505","created_at":"2026-05-18T00:12:47Z"},{"alias_kind":"arxiv_version","alias_value":"1806.07505v1","created_at":"2026-05-18T00:12:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.07505","created_at":"2026-05-18T00:12:47Z"},{"alias_kind":"pith_short_12","alias_value":"B2VBR3263KRF","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"B2VBR3263KRFNWUS","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"B2VBR326","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:B2VBR3263KRFNWUS4RZ4GAFNXQ","target":"record","payload":{"canonical_record":{"source":{"id":"1806.07505","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T23:40:55Z","cross_cats_sorted":[],"title_canon_sha256":"8da303d9553ea850a15b0f832c94537d042332b00f8863ce362295c1e998ed3c","abstract_canon_sha256":"7169b3a576c807d03a0f89d40f88f92f808e2e83c21e2c24884191626ac8ae2e"},"schema_version":"1.0"},"canonical_sha256":"0eaa18ef5edaa256da92e473c300adbc3201f698fbb745d5151e924cb75fef5d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:47.565392Z","signature_b64":"B7Z/330+oPvJifXpPxFUv62KM2fXrnkYAXas2p+W9Lyhp9O9KXsv0wutvUwLz83pIbNvXy4P7aKh3iC2VlxCBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0eaa18ef5edaa256da92e473c300adbc3201f698fbb745d5151e924cb75fef5d","last_reissued_at":"2026-05-18T00:12:47.564829Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:47.564829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.07505","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":"2026-05-18T00:12:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NExJAe1NzAWt59k/hOZbZLrNuQESNWPWejqQ3M0SFUtMCmN0jROLUvvbieN+CTVySGfopUTDP4X5VxWNejPPAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:16:54.932541Z"},"content_sha256":"9ff14ebf422d368ce3823384c293d047f8b95395ea1f043f2021bb0b0e4e32ea","schema_version":"1.0","event_id":"sha256:9ff14ebf422d368ce3823384c293d047f8b95395ea1f043f2021bb0b0e4e32ea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:B2VBR3263KRFNWUS4RZ4GAFNXQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Orientational migration of halide ion in lead halide perovskites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Gang Li, Kaiyang Wang, Ningbo Yi, Qinghai Song, Shuai Wang, Shumin Xiao, Yuhan Wang","submitted_at":"2018-06-19T23:40:55Z","abstract_excerpt":"With the rapid evolution of lead halide perovskite solar cells, there are considerable evidences that the mobile ions strongly impact their properties. However, except the activation energy, the other properties of ionic migration are mostly explored with first principle calculations. Here we investigate the migration of halide ion (vacancy) in lead bromide perovskite single crystalline microplates. In contrast to conventional studies with external bias voltages, we introduce built-in potentials into the microplates via low-energy electron beams and study the corresponding ionic migrations. By"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.07505","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":"2026-05-18T00:12:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1FPFRT+P7h+Ija4IEyGK/jDrMPr1IHfxVZkwuQ8glyHb6ieg+YlSM1ROdj4MLqCRh724/8FLtTlewnPL+Qd/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:16:54.932940Z"},"content_sha256":"5912d869aa0773118063db678f7207653b0e4615e2ef0c2dbe24a607527e6539","schema_version":"1.0","event_id":"sha256:5912d869aa0773118063db678f7207653b0e4615e2ef0c2dbe24a607527e6539"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B2VBR3263KRFNWUS4RZ4GAFNXQ/bundle.json","state_url":"https://pith.science/pith/B2VBR3263KRFNWUS4RZ4GAFNXQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B2VBR3263KRFNWUS4RZ4GAFNXQ/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":"2026-05-25T23:16:54Z","links":{"resolver":"https://pith.science/pith/B2VBR3263KRFNWUS4RZ4GAFNXQ","bundle":"https://pith.science/pith/B2VBR3263KRFNWUS4RZ4GAFNXQ/bundle.json","state":"https://pith.science/pith/B2VBR3263KRFNWUS4RZ4GAFNXQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B2VBR3263KRFNWUS4RZ4GAFNXQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:B2VBR3263KRFNWUS4RZ4GAFNXQ","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":"7169b3a576c807d03a0f89d40f88f92f808e2e83c21e2c24884191626ac8ae2e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T23:40:55Z","title_canon_sha256":"8da303d9553ea850a15b0f832c94537d042332b00f8863ce362295c1e998ed3c"},"schema_version":"1.0","source":{"id":"1806.07505","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.07505","created_at":"2026-05-18T00:12:47Z"},{"alias_kind":"arxiv_version","alias_value":"1806.07505v1","created_at":"2026-05-18T00:12:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.07505","created_at":"2026-05-18T00:12:47Z"},{"alias_kind":"pith_short_12","alias_value":"B2VBR3263KRF","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"B2VBR3263KRFNWUS","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"B2VBR326","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:5912d869aa0773118063db678f7207653b0e4615e2ef0c2dbe24a607527e6539","target":"graph","created_at":"2026-05-18T00:12:47Z","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":"With the rapid evolution of lead halide perovskite solar cells, there are considerable evidences that the mobile ions strongly impact their properties. However, except the activation energy, the other properties of ionic migration are mostly explored with first principle calculations. Here we investigate the migration of halide ion (vacancy) in lead bromide perovskite single crystalline microplates. In contrast to conventional studies with external bias voltages, we introduce built-in potentials into the microplates via low-energy electron beams and study the corresponding ionic migrations. By","authors_text":"Gang Li, Kaiyang Wang, Ningbo Yi, Qinghai Song, Shuai Wang, Shumin Xiao, Yuhan Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T23:40:55Z","title":"Orientational migration of halide ion in lead halide perovskites"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.07505","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":"sha256:9ff14ebf422d368ce3823384c293d047f8b95395ea1f043f2021bb0b0e4e32ea","target":"record","created_at":"2026-05-18T00:12:47Z","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":"7169b3a576c807d03a0f89d40f88f92f808e2e83c21e2c24884191626ac8ae2e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-06-19T23:40:55Z","title_canon_sha256":"8da303d9553ea850a15b0f832c94537d042332b00f8863ce362295c1e998ed3c"},"schema_version":"1.0","source":{"id":"1806.07505","kind":"arxiv","version":1}},"canonical_sha256":"0eaa18ef5edaa256da92e473c300adbc3201f698fbb745d5151e924cb75fef5d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0eaa18ef5edaa256da92e473c300adbc3201f698fbb745d5151e924cb75fef5d","first_computed_at":"2026-05-18T00:12:47.564829Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:47.564829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B7Z/330+oPvJifXpPxFUv62KM2fXrnkYAXas2p+W9Lyhp9O9KXsv0wutvUwLz83pIbNvXy4P7aKh3iC2VlxCBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:47.565392Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.07505","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ff14ebf422d368ce3823384c293d047f8b95395ea1f043f2021bb0b0e4e32ea","sha256:5912d869aa0773118063db678f7207653b0e4615e2ef0c2dbe24a607527e6539"],"state_sha256":"8f7e18603a26b813c8ff61ded23b2d5f6fa6685779e50504086d3cf93eaa6f28"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TS/1z/5/i9kqaG1gN7cxSsVqMSLzvQrKFUUpQ4gqkiMKct9oFKLv3gpB/2n9cb+lFYo45II1Ieh0rYQYHCeWDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T23:16:54.935922Z","bundle_sha256":"d8ed8862b6e099de7e73cb2d932e9c58899198cd9367f8cbe34fcedab14955ec"}}