Temperature-Dependent Optical Modeling of Perovskite Solar Cells

Abstract
Comprehensive temperature-dependent optical modeling of perovskite solar cells (PSCs) and modules is essential to accurately predict their energy yield and quantify their energy losses under real-world operating conditions, where devices are subject to different irradiance spectra and intensities as well as operating temperatures. These models require the accurate determination of the temperature-dependent optical constants of perovskites. Here, we report on these data, empirically determined via spectroscopic ellipsometry, for triple-cation perovskites with band gaps ranging between 1.58 and 1.77 eV at temperatures between 25 and 75 °C. Using this data set, we develop a simple empirical model to obtain the temperature-dependent optical constants of perovskites of an arbitrary band gap. We validate our empirical model by comparing the measured temperature-dependent short-circuit current densities and external quantum efficiency data of single-junction PSCs with simulated results using the modeled optical constants.

Citation
Raja, W., Allen, T. G., Said, A. A., Alharbi, O., Aydin, E., De Bastiani, M., & De Wolf, S. (2022). Temperature-Dependent Optical Modeling of Perovskite Solar Cells. The Journal of Physical Chemistry C. https://doi.org/10.1021/acs.jpcc.2c04768

Acknowledgements
This work was supported by the King Abdullah University of Science and Technology (KAUST) under Award No: OSR-CARF/CCF-3079, OSR-CRG2019-4093, OSR-CRG2020-4350, IED OSR-2019-4208, IED OSR-2019-4580, REI/1/4833-01-01, and OSR-CRG2018-3737.

Publisher
American Chemical Society (ACS)

Journal
The Journal of Physical Chemistry C

DOI
10.1021/acs.jpcc.2c04768

Additional Links
https://pubs.acs.org/doi/10.1021/acs.jpcc.2c04768

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