Improved Charge Collection in Highly Efficient CsPbBrI2 Solar Cells with Light-Induced Dealloying
| Autor: | Joshua J. Choi, J. Scott Niezgoda, Alexander Z. Chen, Benjamin Foley |
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| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Materials science Photoluminescence Energy Engineering and Power Technology Halide Perovskite solar cell Nanotechnology 02 engineering and technology Electron Reversible process 010402 general chemistry 01 natural sciences law.invention law Solar cell Materials Chemistry Renewable Energy Sustainability and the Environment business.industry Energy conversion efficiency 021001 nanoscience & nanotechnology 0104 chemical sciences Fuel Technology Chemistry (miscellaneous) Optoelectronics 0210 nano-technology business |
| Zdroj: | ACS Energy Letters. 2:1043-1049 |
| ISSN: | 2380-8195 |
| DOI: | 10.1021/acsenergylett.7b00258 |
| Popis: | Halide dealloying in CsPbBrI2 perovskite solar cells proves to be critical in achieving high performance. This dealloying occurs under steady illumination and is a reversible process, suggesting transitions between equilibrium states under dark and illuminated environments. Through decoupling charge collection in the electron- and hole-transporting layers, our photoluminescence, X-ray diffraction, and solar cell device characterization results suggest that the light-induced halide dealloying improves hole collection in solar cells, resulting in increased efficiency (9.2% ± 0.64 on average with a champion power conversion efficiency of 10.3%). Our results provide deeper insights on the impact of dealloying on perovskite solar cell performance and highlight the growing potential of all-inorganic perovskite solar cells. |
| Databáze: | OpenAIRE |
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