Light absorption and recycling in hybrid metal halide perovskites photovoltaic devices
The production of highly efficient single‐ and multijunction metal halide perovskite (MHP) solar cells requires careful optimization of the optical and electrical properties of these devices. Here, precise control of CH3NH3PbI3 perovskite layers is demonstrated in solar cell devices through the use...
| Autori principali: | , , , , , , , , , , |
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| Natura: | Journal article |
| Lingua: | English |
| Pubblicazione: |
Wiley
2020
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| _version_ | 1826301862058393600 |
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| author | Patel, J Wright, A Lohmann, K Peng, K Xia, C Ball, J Noel, N Crothers, T Snaith, H Herz, L Johnston, M |
| author_facet | Patel, J Wright, A Lohmann, K Peng, K Xia, C Ball, J Noel, N Crothers, T Snaith, H Herz, L Johnston, M |
| author_sort | Patel, J |
| collection | OXFORD |
| description | The production of highly efficient single‐ and multijunction metal halide perovskite (MHP) solar cells requires careful optimization of the optical and electrical properties of these devices. Here, precise control of CH3NH3PbI3 perovskite layers is demonstrated in solar cell devices through the use of dual source coevaporation. Light absorption and device performance are tracked for incorporated MHP films ranging from ≈67 nm to ≈1.4 µm thickness and transfer‐matrix optical modeling is utilized to quantify optical losses that arise from interference effects. Based on these results, a device with 19.2% steady‐state power conversion efficiency is achieved through incorporation of a perovskite film with near‐optimum predicted thickness (≈709 nm). Significantly, a clear signature of photon reabsorption is observed in perovskite films that have the same thickness (≈709 nm) as in the optimized device. Despite the positive effect of photon recycling associated with photon reabsorption, devices with thicker (>750 nm) MHP layers exhibit poor performance owing to competing nonradiative charge recombination in a “dead‐volume” of MHP. Overall, these findings demonstrate the need for fine control over MHP thickness to achieve the highest efficiency cells, and accurate consideration of photon reabsorption, optical interference, and charge transport properties.
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| first_indexed | 2024-03-07T05:38:47Z |
| format | Journal article |
| id | oxford-uuid:e4dcd072-bef0-43f3-acd4-1f8e12292281 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:38:47Z |
| publishDate | 2020 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:e4dcd072-bef0-43f3-acd4-1f8e122922812022-03-27T10:19:34ZLight absorption and recycling in hybrid metal halide perovskites photovoltaic devicesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e4dcd072-bef0-43f3-acd4-1f8e12292281EnglishSymplectic Elements at OxfordWiley2020Patel, JWright, ALohmann, KPeng, KXia, CBall, JNoel, NCrothers, TSnaith, HHerz, LJohnston, MThe production of highly efficient single‐ and multijunction metal halide perovskite (MHP) solar cells requires careful optimization of the optical and electrical properties of these devices. Here, precise control of CH3NH3PbI3 perovskite layers is demonstrated in solar cell devices through the use of dual source coevaporation. Light absorption and device performance are tracked for incorporated MHP films ranging from ≈67 nm to ≈1.4 µm thickness and transfer‐matrix optical modeling is utilized to quantify optical losses that arise from interference effects. Based on these results, a device with 19.2% steady‐state power conversion efficiency is achieved through incorporation of a perovskite film with near‐optimum predicted thickness (≈709 nm). Significantly, a clear signature of photon reabsorption is observed in perovskite films that have the same thickness (≈709 nm) as in the optimized device. Despite the positive effect of photon recycling associated with photon reabsorption, devices with thicker (>750 nm) MHP layers exhibit poor performance owing to competing nonradiative charge recombination in a “dead‐volume” of MHP. Overall, these findings demonstrate the need for fine control over MHP thickness to achieve the highest efficiency cells, and accurate consideration of photon reabsorption, optical interference, and charge transport properties. |
| spellingShingle | Patel, J Wright, A Lohmann, K Peng, K Xia, C Ball, J Noel, N Crothers, T Snaith, H Herz, L Johnston, M Light absorption and recycling in hybrid metal halide perovskites photovoltaic devices |
| title | Light absorption and recycling in hybrid metal halide perovskites photovoltaic devices |
| title_full | Light absorption and recycling in hybrid metal halide perovskites photovoltaic devices |
| title_fullStr | Light absorption and recycling in hybrid metal halide perovskites photovoltaic devices |
| title_full_unstemmed | Light absorption and recycling in hybrid metal halide perovskites photovoltaic devices |
| title_short | Light absorption and recycling in hybrid metal halide perovskites photovoltaic devices |
| title_sort | light absorption and recycling in hybrid metal halide perovskites photovoltaic devices |
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