Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
Printed, graphite based perovskite solar cells (PSC) offer an inexpensive as well as energy and resource efficient production route for sustainable photovoltaics. In this regard, we present a straight-forward approach to melt and (re-)crystallize the perovskite precursor with a polar gas. Thereby, the crystallization arises not by chemical precipitation from a solvent but through control of the melting point. With this technique, graphite based monolithic perovskite cells with photovoltages above 1 V have been manufactured. A certified steady-state efficiency of 12.6% was confirmed by an accredited laboratory (Fraunhofer ISE CalLab) for such processed devices. [1] This is the highest certified steady-state efficiency in printed perovskite photovoltaics. In this context, we outline the importance of steady-state efficiency measurements for comparable and application-related assessments of perovskite PV performances. Moreover, the high performance of this hole-transport-layer free PSC broadens the perspective to construct perovskite solar cell models beyond the classical p-i-n picture.
References
[1] Wagner et al., ACS Energy Letters (just accepted). DOI: 10.1021/acsenergylett.8b00293
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International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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