Journal article
Intensity Modulated Photocurrent Microspectrosopy for Next Generation Photovoltaics
JS Laird, S Ravishankar, KJ Rietwyk, W Mao, U Bach, TA Smith
Small Methods | WILEY-V C H VERLAG GMBH | Published : 2022
Abstract
In this report, a large-area laser beam induced current microscope that has been adapted to perform intensity modulated photocurrent spectroscopy (IMPS) in an imaging mode is described. Microscopy-based IMPS method provides a spatial resolution of the frequency domain response of the solar cell, allowing correlation of the optoelectronic response with a particular interface, bulk material, specific transport layer, or transport parameter. The system is applied to study degradation effects in back-contact perovskite cells where it is found to readily differentiate areas based on their markedly different frequency response. Using the diffusion-recombination model, the IMPS response is modeled ..
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Awarded by Australian Research Council
Funding Acknowledgements
All authors except S.R acknowledge the Centre of Excellence in Exciton Science funded by the Australian Research Council (ARC) (project No CE170100026). S.R. acknowledges the German Research Foundation (DFG) for support through a Walter-Benjamin fellowship (Project No. 462572437). Open access publishing facilitated by The University of Melbourne, as part of the Wiley - The University of Melbourne agreement via the Council of Australian University Librarians.