Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber.
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 measu...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Association for the Advancement of Science
2013
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| _version_ | 1826274410688937984 |
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| author | Stranks, S Eperon, G Grancini, G Menelaou, C Alcocer, M Leijtens, T Herz, L Petrozza, A Snaith, H |
| author_facet | Stranks, S Eperon, G Grancini, G Menelaou, C Alcocer, M Leijtens, T Herz, L Petrozza, A Snaith, H |
| author_sort | Stranks, S |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-06T22:43:01Z |
| format | Journal article |
| id | oxford-uuid:5c3cd89c-98a4-4bac-b3be-6c023adc5e0a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:43:01Z |
| publishDate | 2013 |
| publisher | American Association for the Advancement of Science |
| record_format | dspace |
| spelling | oxford-uuid:5c3cd89c-98a4-4bac-b3be-6c023adc5e0a2022-03-26T17:26:55ZElectron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5c3cd89c-98a4-4bac-b3be-6c023adc5e0aEnglishSymplectic Elements at OxfordAmerican Association for the Advancement of Science2013Stranks, SEperon, GGrancini, GMenelaou, CAlcocer, MLeijtens, THerz, LPetrozza, ASnaith, HOrganic-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. |
| spellingShingle | Stranks, S Eperon, G Grancini, G Menelaou, C Alcocer, M Leijtens, T Herz, L Petrozza, A Snaith, H Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber. |
| title | Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber. |
| title_full | Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber. |
| title_fullStr | Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber. |
| title_full_unstemmed | Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber. |
| title_short | Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber. |
| title_sort | electron hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber |
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