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Can Nanosecond Laser Achieve High-Performance Perovskite Solar Modules with Aperture Area Efficiency Over 21?

机译：Can Nanosecond Laser Achieve High-Performance Perovskite Solar Modules with Aperture Area Efficiency Over 21?

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摘要

Overcoming cell-to-module (CTM) efficiency losses is indispensable to realizelarge-area high-efficiency perovskite photovoltaic devices for commercialization.Laser scribing technology is used to fabricate perovskite modules, but itdoes not seem to solve the problem of high-quality interconnection and highgeometric filling factor (GFF), which are the prerequisites for overcoming CTMlosses. In reality, what kind of laser technology is needed to fabricate highefficiencyperovskite solar modules is still an open question. Herein, this workdemonstrates that a nanosecond pulse laser is able to deliver a reduced heataffectedzone due to the small thermal diffusion coefficient (Dt) of perovskitematerial, contributing to the accomplishment of a high GFF of up to 95.5%.In addition, the monolithic interconnection quality is improved by finely liftingoff the capping layers on indium tin oxide and identifying the residue withinthe scribed area. As a result, a certified aperture area efficiency of 21.07%under standard 100 mW cm~（?2） AM1.5G illumination is achieved with a highphotovoltaic fill factor exceeding 80%. The present study provides guidance inovercoming key CTM efficiency losses in perovskite photovoltaic technology.

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