How Charge Carrier Exchange between Absorber and Contact Influences Time Constants in the Frequency Domain Response of Perovskite Solar Cells

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Written By Fluxim AG

Sandheep Ravishankar, Zhifa Liu, Yueming Wang, Thomas Kirchartz, and Uwe Rau

PRX Energy 2, 033006 – Published 2 August 2023

https://doi.org/10.1103/PRXEnergy.2.033006

Researchers present a model for the frequency and time domain optoelectronic response of perovskite solar cells (PSCs). The model emphasizes the role of charge carrier exchange between the perovskite and the transport layer. The study identifies that the time constants measured in the frequency domain spectra of PSCs are mainly influenced by the charge carrier extraction velocity at the perovskite/transport layer interfaces, rather than recombination. This understanding is crucial for quantifying recombination and resistive losses that impact the performance of the solar cell.

Drift-diffusion simulations are performed using SETFOS developed by Fluxim AG

Fluxim AG
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