Photo-induced halide redistribution in organic–inorganic perovskite films
Organic–inorganic perovskites such as CH3NH3PbI3 are promising materials for a variety of optoelectronic applications, with certified power conversion efficiencies in solar cells already exceeding 21%. Nevertheless, state-of-the-art films still contain performance-limiting non-radiative recombinatio...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Springer Nature
2016
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| Online Access: | http://hdl.handle.net/1721.1/104058 https://orcid.org/0000-0002-8303-7292 https://orcid.org/0000-0001-7860-5905 https://orcid.org/0000-0002-0960-2580 |
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| author | deQuilettes, Dane W. Zhang, Wei Burlakov, Victor M. Graham, Daniel J. Leijtens, Tomas Osherov-Beizerov, Anna Bulovic, Vladimir Snaith, Henry J. Ginger, David S. Stranks, Samuel David |
| author2 | Massachusetts Institute of Technology. Research Laboratory of Electronics |
| author_facet | Massachusetts Institute of Technology. Research Laboratory of Electronics deQuilettes, Dane W. Zhang, Wei Burlakov, Victor M. Graham, Daniel J. Leijtens, Tomas Osherov-Beizerov, Anna Bulovic, Vladimir Snaith, Henry J. Ginger, David S. Stranks, Samuel David |
| author_sort | deQuilettes, Dane W. |
| collection | MIT |
| description | Organic–inorganic perovskites such as CH3NH3PbI3 are promising materials for a variety of optoelectronic applications, with certified power conversion efficiencies in solar cells already exceeding 21%. Nevertheless, state-of-the-art films still contain performance-limiting non-radiative recombination sites and exhibit a range of complex dynamic phenomena under illumination that remain poorly understood. Here we use a unique combination of confocal photoluminescence (PL) microscopy and chemical imaging to correlate the local changes in photophysics with composition in CH3NH3PbI3 films under illumination. We demonstrate that the photo-induced ‘brightening’ of the perovskite PL can be attributed to an order-of-magnitude reduction in trap state density. By imaging the same regions with time-of-flight secondary-ion-mass spectrometry, we correlate this photobrightening with a net migration of iodine. Our work provides visual evidence for photo-induced halide migration in triiodide perovskites and reveals the complex interplay between charge carrier populations, electronic traps and mobile halides that collectively impact optoelectronic performance. |
| first_indexed | 2024-09-23T13:16:52Z |
| format | Article |
| id | mit-1721.1/104058 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:16:52Z |
| publishDate | 2016 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | mit-1721.1/1040582022-09-28T13:08:14Z Photo-induced halide redistribution in organic–inorganic perovskite films deQuilettes, Dane W. Zhang, Wei Burlakov, Victor M. Graham, Daniel J. Leijtens, Tomas Osherov-Beizerov, Anna Bulovic, Vladimir Snaith, Henry J. Ginger, David S. Stranks, Samuel David Massachusetts Institute of Technology. Research Laboratory of Electronics Osherov-Beizerov, Anna Bulovic, Vladimir Stranks, Samuel David Organic–inorganic perovskites such as CH3NH3PbI3 are promising materials for a variety of optoelectronic applications, with certified power conversion efficiencies in solar cells already exceeding 21%. Nevertheless, state-of-the-art films still contain performance-limiting non-radiative recombination sites and exhibit a range of complex dynamic phenomena under illumination that remain poorly understood. Here we use a unique combination of confocal photoluminescence (PL) microscopy and chemical imaging to correlate the local changes in photophysics with composition in CH3NH3PbI3 films under illumination. We demonstrate that the photo-induced ‘brightening’ of the perovskite PL can be attributed to an order-of-magnitude reduction in trap state density. By imaging the same regions with time-of-flight secondary-ion-mass spectrometry, we correlate this photobrightening with a net migration of iodine. Our work provides visual evidence for photo-induced halide migration in triiodide perovskites and reveals the complex interplay between charge carrier populations, electronic traps and mobile halides that collectively impact optoelectronic performance. Seventh Framework Programme (European Commission) (FP7/2007–2013) , under grant agreement 604032, MESO project) Seventh Framework Programme (European Commission) (People Programme (Marie Curie Actions), FP7/2007-2013/ under REA grant agreement number PIOF-GA-2013-622630)) United States. Dept. of Energy (DOE (DE-SC0013957)) National Science Foundation (U.S.) (NSF Graduate Research Fellowship (DGE-1256082)) Engineering and Physical Sciences Research Council (EPSRC) (Supergen Supersolar project) Massachusetts Institute of Technology. Libraries (contributions to Open Access article processing fees) United States. Dept. of Energy. Office of Basic Energy Sciences (Center for Excitonics, an Energy Frontier Research Center, Award No. DE-SC0001088) 2016-08-29T16:11:29Z 2016-08-29T16:11:29Z 2016-05 2016-01 Article http://purl.org/eprint/type/JournalArticle 2041-1723 http://hdl.handle.net/1721.1/104058 deQuilettes, Dane W., Wei Zhang, Victor M. Burlakov, Daniel J. Graham, Tomas Leijtens, Anna Osherov, Vladimir Bulović, Henry J. Snaith, David S. Ginger, and Samuel D. Stranks. "Photo-induced halide redistribution in organic–inorganic perovskite films." Nature Communications 7, Article number: 11683 (2016), pp.1-9. https://orcid.org/0000-0002-8303-7292 https://orcid.org/0000-0001-7860-5905 https://orcid.org/0000-0002-0960-2580 en_US http://dx.doi.org/10.1038/ncomms11683 Nature Communications Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Springer Nature Nature |
| spellingShingle | deQuilettes, Dane W. Zhang, Wei Burlakov, Victor M. Graham, Daniel J. Leijtens, Tomas Osherov-Beizerov, Anna Bulovic, Vladimir Snaith, Henry J. Ginger, David S. Stranks, Samuel David Photo-induced halide redistribution in organic–inorganic perovskite films |
| title | Photo-induced halide redistribution in organic–inorganic perovskite films |
| title_full | Photo-induced halide redistribution in organic–inorganic perovskite films |
| title_fullStr | Photo-induced halide redistribution in organic–inorganic perovskite films |
| title_full_unstemmed | Photo-induced halide redistribution in organic–inorganic perovskite films |
| title_short | Photo-induced halide redistribution in organic–inorganic perovskite films |
| title_sort | photo induced halide redistribution in organic inorganic perovskite films |
| url | http://hdl.handle.net/1721.1/104058 https://orcid.org/0000-0002-8303-7292 https://orcid.org/0000-0001-7860-5905 https://orcid.org/0000-0002-0960-2580 |
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