{"doi":"10.1126/science.1243982","title":"Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber","abstract":"Organic-inorganic perovskites have shown promise as high-performance absorbers in solar cells, first as a coating on a mesoporous metal oxide scaffold and more recently as a solid layer in planar heterojunction architectures. Here, we report transient absorption and photoluminescence-quenching measurements to determine the electron-hole diffusion lengths, diffusion constants, and lifetimes in mixed halide (CH3NH3PbI(3-x)Cl(x)) and triiodide (CH3NH3PbI3) perovskite absorbers. We found that the diffusion lengths are greater than 1 micrometer in the mixed halide perovskite, which is an order of magnitude greater than the absorption depth. In contrast, the triiodide absorber has electron-hole diffusion lengths of ~100 nanometers. These results justify the high efficiency of planar heterojunction perovskite solar cells and identify a critical parameter to optimize for future perovskite absorber development.","journal":"Science","year":2013,"id":2466,"datarank":22.03799321330657,"base_score":9.229848838364227,"endowment":9.229848838364227,"self_citation_contribution":1.3844773257546341,"citation_network_contribution":20.653515887551936,"self_endowment_contribution":1.3844773257546341,"citer_contribution":20.653515887551936,"corpus_percentile":96.8,"corpus_rank":795,"citation_count":10196,"citer_count":163,"citers_with_citation_signal":163,"citers_with_endowment":163,"datacite_reuse_total":0,"is_dataset":false,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2013-10-18","authors":[{"id":29796,"name":"Giles E. Eperon","orcid":"0000-0001-9600-4847","position":1,"is_corresponding":false},{"id":29797,"name":"Giulia Grancini","orcid":"0000-0001-8704-4222","position":2,"is_corresponding":false},{"id":29798,"name":"Christopher Menelaou","orcid":null,"position":3,"is_corresponding":false},{"id":29799,"name":"Marcelo J. P. Alcocer","orcid":"0000-0002-6600-1335","position":4,"is_corresponding":false},{"id":29800,"name":"Tomas Leijtens","orcid":"0000-0001-9313-7281","position":5,"is_corresponding":false},{"id":29801,"name":"Laura M. Herz","orcid":"0000-0001-9621-334X","position":6,"is_corresponding":false},{"id":29802,"name":"Annamaria Petrozza","orcid":"0000-0001-6914-4537","position":7,"is_corresponding":false},{"id":29803,"name":"Henry J. Snaith","orcid":"0000-0001-8511-790X","position":8,"is_corresponding":false},{"id":29795,"name":"Samuel D. Stranks","orcid":"0000-0002-8303-7292","position":0,"is_corresponding":true}],"reference_count":27,"raw_metadata":{"citation_network_status":"fetched"},"created_at":"2026-03-01T18:20:47.508186Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}