{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:NIFOWPZX4NLPRCOGXOU3ZX2GIV","short_pith_number":"pith:NIFOWPZX","schema_version":"1.0","canonical_sha256":"6a0aeb3f37e356f889c6bba9bcdf464558f8912533c906574a251fd0a3d49d6d","source":{"kind":"arxiv","id":"1505.01724","version":1},"attestation_state":"computed","paper":{"title":"Methylammonium fragmentation in amines as source of localized trap levels and the healing role of Cl in Hybrid Lead-Iodide Perovskites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alessandro Mattoni, Alessio Filippetti, Pietro Delugas","submitted_at":"2015-05-07T14:36:09Z","abstract_excerpt":"The resilience to deep traps and localized defect formation is one of the important aspects that qualify a material as suited photo-absorber in solar cell devices. Here we investigate by ab-initio calculations the fundamental physics and chemistry of a number of possible localized defects in hybrid methylammonium lead-iodide perovskites. Our analysis encompasses a number of possible molecular fragments deriving from the dissociation of methylammonium. In particular, we found that in stoichiometric conditions both ammonia and methylamine molecules present lone-pair localized levels well within "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1505.01724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-05-07T14:36:09Z","cross_cats_sorted":[],"title_canon_sha256":"467f45fca9ed4bba3a5c50017a9d81428dbe8b5e75980fa329a364d554159fff","abstract_canon_sha256":"5e1f246a1f7e25283b69f85c6ddecc49dbec59ef88c61221ca731c10a3f82a82"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:22.993112Z","signature_b64":"wfTb1R1cwPqmWw3BnyskhzZehBpWSfpVsQIhYpjP3Zi8vHgvmqDF/yzYvwu3XEOnl5lbueDgtk9OFta8xrQeDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a0aeb3f37e356f889c6bba9bcdf464558f8912533c906574a251fd0a3d49d6d","last_reissued_at":"2026-05-18T01:37:22.992222Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:22.992222Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Methylammonium fragmentation in amines as source of localized trap levels and the healing role of Cl in Hybrid Lead-Iodide Perovskites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alessandro Mattoni, Alessio Filippetti, Pietro Delugas","submitted_at":"2015-05-07T14:36:09Z","abstract_excerpt":"The resilience to deep traps and localized defect formation is one of the important aspects that qualify a material as suited photo-absorber in solar cell devices. Here we investigate by ab-initio calculations the fundamental physics and chemistry of a number of possible localized defects in hybrid methylammonium lead-iodide perovskites. Our analysis encompasses a number of possible molecular fragments deriving from the dissociation of methylammonium. In particular, we found that in stoichiometric conditions both ammonia and methylamine molecules present lone-pair localized levels well within "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01724","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1505.01724","created_at":"2026-05-18T01:37:22.992398+00:00"},{"alias_kind":"arxiv_version","alias_value":"1505.01724v1","created_at":"2026-05-18T01:37:22.992398+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01724","created_at":"2026-05-18T01:37:22.992398+00:00"},{"alias_kind":"pith_short_12","alias_value":"NIFOWPZX4NLP","created_at":"2026-05-18T12:29:32.376354+00:00"},{"alias_kind":"pith_short_16","alias_value":"NIFOWPZX4NLPRCOG","created_at":"2026-05-18T12:29:32.376354+00:00"},{"alias_kind":"pith_short_8","alias_value":"NIFOWPZX","created_at":"2026-05-18T12:29:32.376354+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NIFOWPZX4NLPRCOGXOU3ZX2GIV","json":"https://pith.science/pith/NIFOWPZX4NLPRCOGXOU3ZX2GIV.json","graph_json":"https://pith.science/api/pith-number/NIFOWPZX4NLPRCOGXOU3ZX2GIV/graph.json","events_json":"https://pith.science/api/pith-number/NIFOWPZX4NLPRCOGXOU3ZX2GIV/events.json","paper":"https://pith.science/paper/NIFOWPZX"},"agent_actions":{"view_html":"https://pith.science/pith/NIFOWPZX4NLPRCOGXOU3ZX2GIV","download_json":"https://pith.science/pith/NIFOWPZX4NLPRCOGXOU3ZX2GIV.json","view_paper":"https://pith.science/paper/NIFOWPZX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1505.01724&json=true","fetch_graph":"https://pith.science/api/pith-number/NIFOWPZX4NLPRCOGXOU3ZX2GIV/graph.json","fetch_events":"https://pith.science/api/pith-number/NIFOWPZX4NLPRCOGXOU3ZX2GIV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NIFOWPZX4NLPRCOGXOU3ZX2GIV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NIFOWPZX4NLPRCOGXOU3ZX2GIV/action/storage_attestation","attest_author":"https://pith.science/pith/NIFOWPZX4NLPRCOGXOU3ZX2GIV/action/author_attestation","sign_citation":"https://pith.science/pith/NIFOWPZX4NLPRCOGXOU3ZX2GIV/action/citation_signature","submit_replication":"https://pith.science/pith/NIFOWPZX4NLPRCOGXOU3ZX2GIV/action/replication_record"}},"created_at":"2026-05-18T01:37:22.992398+00:00","updated_at":"2026-05-18T01:37:22.992398+00:00"}