PIN and NIP Join Forces in a New Type of Perovskite Solar Cell Module
Gerrit Boschloo a
a Department of Chemistry – Ångström Laboratory, Uppsala University, Sweden
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Invited Speaker Session, Gerrit Boschloo, presentation 076
Publication date: 20th April 2022

For practical applications, many solar cells are series-connected in modules. In a typical thin film solar module, 3 scribes are made per solar cell (P1, P2, P3) to separate the cells. This leads to a loss in active area. It is difficult to add bypass diodes in such modules. In silicon solar modules, bypass diodes are added to lower the loss of module efficiency when one cell of the series is shaded or defect. Such cases lead to reverse bias across shaded cells, which may damage these solar cells. Notably, perovskite solar cells show poor stability under reverse bias, which will be problematic in practical applications.

Here, we present a novel way to combine perovskite solar cells in a series-connected module. The concept is based on the notion that perovskite solar cells have been developed in two configurations, PIN and NIP. The solar cell efficiency of these configurations is quite similar. By placing PIN and NIP cells side-by-side on a substrate, easy interconnection can be made and only one scribe per cell is needed, as is displayed in the graphic. No electrical connection between back and front side is made, which is good for stability. Perhaps most important of this new concept is that it allows for easy integration of bypass diodes, as will be discussed.

We thank the Swedish Foundation for Strategic Research (Project No. RMA15-0130), and the Standup for Energy program for financial support.

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