Issue 6, 2019

A flexible back-contact perovskite solar micro-module


Back-contact perovskite solar cells are fabricated by depositing methylammonium lead iodide perovskite into micron-sized grooves, with opposite walls of each groove being coated with either n- or p-type selective contacts. V-Shaped grooves are created by embossing a polymeric substrate, with the different charge-selective electrodes deposited onto the walls of the groove using a directional evaporation technique. We show that individual grooves act as photovoltaic devices, having a power conversion efficiency of up to 7.3%. By series-connecting multiple grooves, we create integrated micro-modules that build open circuit voltages up to nearly 15 V and power conversion efficiencies over 4%. The devices created are fully flexible, do not include rare metals, and are processed using techniques applicable to roll-to-roll processing.

Graphical abstract: A flexible back-contact perovskite solar micro-module

Supplementary files

Article information

Article type
03 Dec 2018
14 Mar 2019
First published
03 May 2019
This article is Open Access
Creative Commons BY license

Energy Environ. Sci., 2019,12, 1928-1937

A flexible back-contact perovskite solar micro-module

M. Wong-Stringer, T. J. Routledge, T. McArdle, C. J. Wood, O. S. Game, J. A. Smith, J. E. Bishop, N. Vaenas, D. M. Coles, A. R. Buckley and D. G. Lidzey, Energy Environ. Sci., 2019, 12, 1928 DOI: 10.1039/C8EE03517B

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