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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 24: Hybrid and Perovskite Photovoltaics III

CPP 24.7: Vortrag

Mittwoch, 19. März 2025, 11:00–11:15, H38

Modeling and Analysis of Spectral and Thermal Effects in 2-Terminal Perovskite-CIGSe Tandem Solar Cell Configurations — •Yokozuna Schirmer¹, Nicolas Otto¹, Guillermo Farias Basulto², Rutger Schlatmann^1,2, Bert Stegemann¹, and Christof Schultz¹ — ¹HTW Berlin - University of Applied Sciences, Wilhelminenhofstr. 75a, D-12459 Berlin, Germany — ²PVcomB / Helmholtz-Zentrum Berlin für Materialien und Energie, Schwarzschildstr.3, D-12489 Berlin, Germany

Tandem solar cells are being developed to exceed the efficiency limits of single-junction cells. Typically, they are designed in a 2-terminal (2T) current-matched configuration, which can result in a reduced energy yield due to current mismatch caused by spectral variations throughout the day. To overcome this limitation, tandem solar cells can be configured in a 2T voltage-matched setup, which could mitigate the impact of spectral sensitivity on performance. The aim of this work is the development of a computational model to analyse the energy yield of each configuration. This model combines temperature-dependent electrical cell parameters with spectrally resolved real-world outdoor data to simulate the operational behaviour and to evaluate the advantages of each interconnection approach. The model is validated by measured I-V cell data from single- and multi-junction cells. Moreover, a comprehensive analysis of the calculated results provides valuable insights into the performance trade-offs under real-world conditions, enabling the identification of the optimum design for specific applications.

Keywords: Simulation; Perovskite; CIGSe; Tandem