Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 12, Issue 6, Pages 1928-1937Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ee03517b
Keywords
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Funding
- UK Engineering and Physical Sciences Research Council (EPSRC) [EP/M025020/1, EP/M014797/1]
- EPSRC
- Centre for Doctoral Training in New and Sustainable PV [EP/L01551X/1]
- Power Roll Ltd
- EPSRC [EP/M025020/1, EP/M014797/1] Funding Source: UKRI
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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.
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