|
Given the large variety of materials and architectures used in perovskite-based tandem solar cells, optical modelling and energy yield calculations are indispensable tools to optimize these devices. To minimize financial and energy payback times, the power output under realistic irradiation conditions need to be assessed for locations in various climatic zones. In response to this challenge, we have developed the software package “EYcalc” at KIT that allows rapid simulation of the complex tandem architectures. “EYcalc” is published and freely available at https://github.com/PerovskitePV/EYcalc.
In this contribution, we will present our latest work on energy yield modelling addressing timely research questions of perovskite-based tandem photovoltaics. Our contribution will provide an overview of previous work on three-terminal, textured and bifacial perovskite/Si tandem solar cells [1-5] and elaborate in detail about identifying the optimal texture at the front side of textured perovskite/Si tandem solar cells with solution-processed thick (>1μm) perovskite top cell. Given recent advances in solution processing of thick perovskite cells of high power conversion efficiency, this approach represents a promising strategy for the fabrication of textured tandem solar cells with very good light management. We find that compared to a perfectly conformal deposition of the perovskite top cell, the thick solution-processed perovskite top cells exhibit an only 2-3% lower annual energy yield [6].
[1] R. Schmager et al., Opt. Express 27, A507 (2019).
[2] M. Langenhorst et al., Prog. Photovoltaics Res. Appl. 27, 290-298 (2019).
[3] J. Lehr et al., Sustain. Energy Fuels 2, 2754–2761 (2018).
[4] Lehr, J. et al. Sol. Energy Mater. Sol. Cells 208, 110367 (2020).
[5] F. Gota et al., Joule 4 (11), 2387-2403 (2020).
[6] F. Gota et al., submitted (2021).
|
