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1 August 2021 Trapping and De-trapping dynamic in perovskite solar cells based on Pump-Push-Photocurrent study
Jiaxin Pan, Artem A. Bakulin, Piers R. F. Barnes
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Proceedings Volume 11799, Physical Chemistry of Semiconductor Materials and Interfaces XX; 117990M (2021) https://doi.org/10.1117/12.2595138
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
Nowadays, perovskite Photovoltaic Solar Cells (PSCs) have attracted scientists’ attention due to the high- power conversion efficiency (PCE) and potentially low cost of manufacturing. However, the charge trapping and associated recombination processes negatively affect perovskite device performance. Here, we are using a new optical Pump-Push-Photocurrent (PPP) technique to study the carrier dynamic in perovskite devices. Particularly we are interested in the kinetics of charge trapping and nonradiative recombination in the device active layer. We have performed quasi-steady-state measurements of device performance under simultaneous illumination by visible and NIR laser diode. The preliminary results show that the effect of NIR push light scales linearly with NIR light intensity but depends in a more complex way from the intensity of visible light. By measuring the induced photocurrent as a function of light-modulation frequency we have performed an estimation of carrier lifetime. Moreover, the temperature-dependent current density measurements show that the effect of NIR light on the device performance does not originate from the sample heating but likely leads to the carrier detrapping.
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Jiaxin Pan, Artem A. Bakulin, and Piers R. F. Barnes "Trapping and De-trapping dynamic in perovskite solar cells based on Pump-Push-Photocurrent study", Proc. SPIE 11799, Physical Chemistry of Semiconductor Materials and Interfaces XX, 117990M (1 August 2021); https://doi.org/10.1117/12.2595138
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KEYWORDS
Perovskite
Electronic components
Near infrared
Solar cells
Measurement devices
Optics manufacturing
Photovoltaic materials
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