Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
DOI: https://doi.org/10.29363/nanoge.hopv.2023.211
Publication date: 30th March 2023
In this talk, after presenting an introduction to perovskite solar cells, I will highlight some recent work understanding and mitigating losses in p-i-n perovskite solar cells. Specifically, p-i-n cells generally exhibit lower current density and lower open-circuit voltage than n-i-p cells. It transpires that the lower current density originates from a very rapid (sub-second) short-circuit current loss, which itself arises from a redistribution of ions from the bulk of the perovskite absorber layer to the interfaces. The lower open-circuit voltage has been known to originate from severe non-radiative recombination losses at the perovskite/electron transport layer interface. I will present a range of approaches which are successful in mitigating these losses. Solution processing is the main route employed in the academic field for perovskite thin-film fabrication. However, thermal evaporation (or sublimation) under vacuum is a very useful, highly scalable method which has received comparably little attention. I will present some recent advances in vapor deposited solar cells and insights into enhancing the long-term stability of the devices. I will finish will an industrial outlook towards recent progress and the pathway towards delivering real perovskite PV product into the market.
This work was part funded my EPSRC, the European Union H2020 NEXUS project and Oxford PV
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