Influence of temperature dependent optical constants on the performance of Perovskite-Silicon tandem solar cells under field conditions |
Karthik Raitani& Pradeep R. Nair Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai, --, India |
The outdoor performance of Perovskite-Silicon (P-Si) two terminal (2-T) tandems depends on the operating temperature. In addition to its band gap, the optical properties of perovskites are also temperature dependent which leads to current mismatch under operating conditions. Here, we provide quantitative estimates for the influence of the temperature dependence of optical properties on the temperature coefficients of 2T tandem cells. Through detailed numerical simulations, we delineate the contributions of important parameters like temperature dependence of band gap and optical parameters, carrier transport and recombination. Our numerical estimates compare well with recent experiments and could contribute towards estimation of energy yield under ambient conditions. |