Temperature-Dependent Optical Modeling of Perovskite Solar Cells

Waseem Raja*, Thomas G. Allen*, Ahmed Ali Said, Ohoud Alharbi, Erkan Aydin, Michele De Bastiani, Stefaan De Wolf*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)14366-14374
Number of pages9
Issue number33
StatePublished - Aug 25 2022

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Energy
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films


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