{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:TQTKDU6W6EZC3UB2RQ4JVW6ELX","short_pith_number":"pith:TQTKDU6W","canonical_record":{"source":{"id":"2202.02375","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-01-28T22:45:18Z","cross_cats_sorted":[],"title_canon_sha256":"a819865d41ed35afde90e25c1d50a8f42713439080180cfb410370ec7539f080","abstract_canon_sha256":"46460e9b5d28aa96932344956991bd6563c091d96f1a47a8ae296ed72e531e2e"},"schema_version":"1.0"},"canonical_sha256":"9c26a1d3d6f1322dd03a8c389adbc45dfc0d4c3724609af6a5e7cb620081b743","source":{"kind":"arxiv","id":"2202.02375","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.02375","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"arxiv_version","alias_value":"2202.02375v1","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.02375","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"pith_short_12","alias_value":"TQTKDU6W6EZC","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"pith_short_16","alias_value":"TQTKDU6W6EZC3UB2","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"pith_short_8","alias_value":"TQTKDU6W","created_at":"2026-07-05T03:54:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:TQTKDU6W6EZC3UB2RQ4JVW6ELX","target":"record","payload":{"canonical_record":{"source":{"id":"2202.02375","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-01-28T22:45:18Z","cross_cats_sorted":[],"title_canon_sha256":"a819865d41ed35afde90e25c1d50a8f42713439080180cfb410370ec7539f080","abstract_canon_sha256":"46460e9b5d28aa96932344956991bd6563c091d96f1a47a8ae296ed72e531e2e"},"schema_version":"1.0"},"canonical_sha256":"9c26a1d3d6f1322dd03a8c389adbc45dfc0d4c3724609af6a5e7cb620081b743","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:54:28.201370Z","signature_b64":"MN+XE4G/qtJOz+wDgDbSZRZhip74wogA3caXzuTWSv0xYew7oTT+sPPnKr0XHaD9iZIVnZJBV1eniSGGNXBdCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9c26a1d3d6f1322dd03a8c389adbc45dfc0d4c3724609af6a5e7cb620081b743","last_reissued_at":"2026-07-05T03:54:28.200910Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:54:28.200910Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.02375","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":"2026-07-05T03:54:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4qvJ74rm+Mj7mzAjevojjm4tcRrwdTqVi1ahjmDklTvwg8xGaXAsjwT92E/zy8KRLmXCk3evhKDoqmqU6oK+Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T17:24:30.682116Z"},"content_sha256":"48e3fe4df01a2159c30d0734200d93f982b5b0d3090981a6b54da563f4c575a8","schema_version":"1.0","event_id":"sha256:48e3fe4df01a2159c30d0734200d93f982b5b0d3090981a6b54da563f4c575a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:TQTKDU6W6EZC3UB2RQ4JVW6ELX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Preserving the Stoichiometry of Triple-Cation Perovskites by Carrier-Gas-Free Antisolvent Spraying","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexander D. Taylor, Alexander Hinderhofer, Fabian Paulus, Frank Schreiber, Katelyn P. Goetz, Lena Merten, Miguel Albaladejo-Siguan, M. Jankowski, Oscar Telschow, O. V. Konovalov, Tim Schramm, Yana Vaynzof","submitted_at":"2022-01-28T22:45:18Z","abstract_excerpt":"The use of antisolvents during the fabrication of solution-processed lead halide perovskite layers is increasingly common. Usually, the antisolvent is applied by pipetting during the spin-coating process, which often irreversibly alters the composition of the perovskite layer, resulting in the formation of PbI2 at the surface and bulk of the perovskite layer. Here, we demonstrate that by applying the antisolvent via carrier-gas free spraying, the stoichiometry of the perovskite layer is far better preserved. Consequently, the photovoltaic performance of triple cation photovoltaic devices fabri"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.02375","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/2202.02375/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":"2026-07-05T03:54:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xGaEdyNwVKIsisozmWRjYLV17x7PdmgK2QBwUr2CRBCYgPq1YhRMEpP5+OMKCJU24L69JwjLKvS4O/MhmAyQCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T17:24:30.682641Z"},"content_sha256":"3740922d9ef21d368eb55c1a7928be9cf893c12d6883ece2d77923b45eb5292c","schema_version":"1.0","event_id":"sha256:3740922d9ef21d368eb55c1a7928be9cf893c12d6883ece2d77923b45eb5292c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TQTKDU6W6EZC3UB2RQ4JVW6ELX/bundle.json","state_url":"https://pith.science/pith/TQTKDU6W6EZC3UB2RQ4JVW6ELX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TQTKDU6W6EZC3UB2RQ4JVW6ELX/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":"2026-08-14T17:24:30Z","links":{"resolver":"https://pith.science/pith/TQTKDU6W6EZC3UB2RQ4JVW6ELX","bundle":"https://pith.science/pith/TQTKDU6W6EZC3UB2RQ4JVW6ELX/bundle.json","state":"https://pith.science/pith/TQTKDU6W6EZC3UB2RQ4JVW6ELX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TQTKDU6W6EZC3UB2RQ4JVW6ELX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:TQTKDU6W6EZC3UB2RQ4JVW6ELX","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":"46460e9b5d28aa96932344956991bd6563c091d96f1a47a8ae296ed72e531e2e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-01-28T22:45:18Z","title_canon_sha256":"a819865d41ed35afde90e25c1d50a8f42713439080180cfb410370ec7539f080"},"schema_version":"1.0","source":{"id":"2202.02375","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.02375","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"arxiv_version","alias_value":"2202.02375v1","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.02375","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"pith_short_12","alias_value":"TQTKDU6W6EZC","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"pith_short_16","alias_value":"TQTKDU6W6EZC3UB2","created_at":"2026-07-05T03:54:28Z"},{"alias_kind":"pith_short_8","alias_value":"TQTKDU6W","created_at":"2026-07-05T03:54:28Z"}],"graph_snapshots":[{"event_id":"sha256:3740922d9ef21d368eb55c1a7928be9cf893c12d6883ece2d77923b45eb5292c","target":"graph","created_at":"2026-07-05T03:54:28Z","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/2202.02375/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The use of antisolvents during the fabrication of solution-processed lead halide perovskite layers is increasingly common. Usually, the antisolvent is applied by pipetting during the spin-coating process, which often irreversibly alters the composition of the perovskite layer, resulting in the formation of PbI2 at the surface and bulk of the perovskite layer. Here, we demonstrate that by applying the antisolvent via carrier-gas free spraying, the stoichiometry of the perovskite layer is far better preserved. Consequently, the photovoltaic performance of triple cation photovoltaic devices fabri","authors_text":"Alexander D. Taylor, Alexander Hinderhofer, Fabian Paulus, Frank Schreiber, Katelyn P. Goetz, Lena Merten, Miguel Albaladejo-Siguan, M. Jankowski, Oscar Telschow, O. V. Konovalov, Tim Schramm, Yana Vaynzof","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-01-28T22:45:18Z","title":"Preserving the Stoichiometry of Triple-Cation Perovskites by Carrier-Gas-Free Antisolvent Spraying"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.02375","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":"sha256:48e3fe4df01a2159c30d0734200d93f982b5b0d3090981a6b54da563f4c575a8","target":"record","created_at":"2026-07-05T03:54:28Z","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":"46460e9b5d28aa96932344956991bd6563c091d96f1a47a8ae296ed72e531e2e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-01-28T22:45:18Z","title_canon_sha256":"a819865d41ed35afde90e25c1d50a8f42713439080180cfb410370ec7539f080"},"schema_version":"1.0","source":{"id":"2202.02375","kind":"arxiv","version":1}},"canonical_sha256":"9c26a1d3d6f1322dd03a8c389adbc45dfc0d4c3724609af6a5e7cb620081b743","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9c26a1d3d6f1322dd03a8c389adbc45dfc0d4c3724609af6a5e7cb620081b743","first_computed_at":"2026-07-05T03:54:28.200910Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:54:28.200910Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MN+XE4G/qtJOz+wDgDbSZRZhip74wogA3caXzuTWSv0xYew7oTT+sPPnKr0XHaD9iZIVnZJBV1eniSGGNXBdCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:54:28.201370Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.02375","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:48e3fe4df01a2159c30d0734200d93f982b5b0d3090981a6b54da563f4c575a8","sha256:3740922d9ef21d368eb55c1a7928be9cf893c12d6883ece2d77923b45eb5292c"],"state_sha256":"81d2aa41bed942d3307cdd67c950dd2dcf1f5c14ff5b9f0b1b4232e03d492f82"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j0HisTmN5IZIqPjLyDUvAqiJ7QtQ2Ewme68KVOi6TyROAU9vdYdcqj9za5a4egDcOrXsAwzF/3GkgOd799LYCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T17:24:30.707981Z","bundle_sha256":"96087af39dbab79a1a91bb1391bacdd20968b8d00a0af55bef43483b39b1859d"}}