Optical Characterizations and Modelling of Semitransparent Perovskite Solar Cells for Tandem Applications
| Autor: | Raoult, E., Bodeux, R., Jutteau, S., Rives, S., Yaiche, A., Coutancier, D., Rousset, J., Collin, S. |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| DOI: | 10.4229/eupvsec20192019-3bv.2.53 |
| Popis: | 36th European Photovoltaic Solar Energy Conference and Exhibition; 757-763 A study of the optical properties of silicon perovskite tandem solar cells is reported. A 4-terminal (4T) tandem device has been built with 22.3 % efficiency, combining a semitransparent perovskite solar cell (PSC) with a commercially-available Aluminum Back Surface Field (Al-BSF) silicon solar cell from French manufacturer Photowatt. The silicon cell presents a PCE of 18.5% and results in an overall 4T tandem efficiency of 22.3% in combination with a semitransparent perovskite solar cell (PSC) of 16.6%. In order to further increase the device performance, optical losses have to be minimized through the PSC in the near infrared region. However, the optical properties of each layer composing the PSC are not accurately known, and they depend on the exact material composition and process. This work aims to characterize optically each layer of the semitransparent PSC by spectrophotometry, profilometry and ellipsometry measurements, in order to determine their optical indices n and k. In particular, we report for the first time the optical indices of the Cs0.05(MA0.166FA0.833)0.95Pb(Br0.166I0.833)3 triple cation perovskite. Optical modelling based on the transfer matrix method is used to identify the optical losses. These results will allow a precise design of the devices and a quick test of various materials, by predicting their impact on the efficiency of the bottom silicon cell and the tandem cell. |
| Databáze: | OpenAIRE |
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