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When JV Curves Conceal Material Improvements: The Relevance of Photoluminescence Measurements in the Optimization of Perovskite Solar Cells

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When JV Curves Conceal Material Improvements: The Relevance of Photoluminescence Measurements in the Optimization of Perovskite Solar Cells

dc.contributor.author	Dreessen, Chris
dc.contributor.author	Zanoni, Kassio P. S.
dc.contributor.author	Gil Escrig, Lidón
dc.contributor.author	Rodkey, Nathan
dc.contributor.author	Khan, Jafar I.
dc.contributor.author	Laquai, Frédéric
dc.contributor.author	Sessolo, Michele
dc.contributor.author	Roldán Carmona, Cristina
dc.contributor.author	Bolink, Henk
dc.date.accessioned	2023-10-26T08:07:22Z
dc.date.available	2023-10-26T08:07:22Z
dc.date.issued	2023
dc.identifier.uri	https://hdl.handle.net/10550/90628
dc.description.abstract	Lead halide perovskites have prompted great interest, offering impressive photovoltaic performances. Most fundamental investigations and cell optimizations focus on solution-based solar cells, which are not easily extended to larger scales. Commonly in these cells, losses in the open-circuit voltage are attributed to arise primarily from interface recombination, and therefore the most studies have focused on optimization of the surface to eliminate defects states. In contrast, thermal evaporation is an alternative, solvent-free, and scalable method to deposit lead halide perovskites that is gaining attention. However, the number of reports showing high-efficiency solar cells (> 20%) prepared using thermal evaporation is still small. Here, the origins of non-radiative charge carrier recombination are investigated in perovskite cells that are deposited via thermal co-evaporation. This is done through a combination of photoluminescence spectroscopy, current-voltage characterization, and simulations. It is found that the non-radiative recombination in these cells is caused equally by bulk and interface defects. In general, it is advocated to perform a dual analysis of the photoluminescence spectroscopy of both the film and the photovoltaic device, in conjunction with current-voltage measurements. It is emphasized that such a dual analysis is needed to enable the identification of improvements and to unlock further advancements in this technology.
dc.language.iso	eng
dc.relation.ispartof	Advanced Optical Materials, 2023, vol. 2301019 , p. 1-11
dc.source	Dreessen, Chris Zanoni, Kassio P. Gil Escrig, Lidón Rodkey, Nathan Khan, Jafar I. Laquai, Frédéric Sessolo, Michele Roldán Carmona, Cristina Bolink, Hendrik Jan 2023 When JV Curves Conceal Material Improvements: The Relevance of Photoluminescence Measurements in the Optimization of Perovskite Solar Cells Advanced Optical Materials 2301019 1 11
dc.subject	Materials
dc.subject	Òptica
dc.subject	Química
dc.title	When JV Curves Conceal Material Improvements: The Relevance of Photoluminescence Measurements in the Optimization of Perovskite Solar Cells
dc.type	journal article
dc.date.updated	2023-10-26T08:07:22Z
dc.identifier.doi	10.1002/adom.202301019
dc.identifier.idgrec	161548
dc.rights.accessRights	open access