Premium
Scalable Fabrication of Efficient Perovskite Solar Modules on Flexible Glass Substrates
Author(s) -
Dai Xuezeng,
Deng Yehao,
Van Brackle Charles H.,
Chen Shangshang,
Rudd Peter N.,
Xiao Xun,
Lin Yun,
Chen Bo,
Huang Jinsong
Publication year - 2020
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201903108
Subject(s) - materials science , perovskite (structure) , fabrication , nucleation , energy conversion efficiency , chemical engineering , optoelectronics , nanotechnology , organic chemistry , chemistry , medicine , alternative medicine , pathology , engineering
Perovskite materials are good candidates for flexible photovoltaic applications due to their strong absorption and low‐temperature processing, but efficient flexible perovskite modules have not yet been realized. Here, a record efficiency flexible perovskite solar module is demonstrated by blade coating high‐quality perovskite films on flexible Corning Willow Glass using additive engineering. Ammonium chloride (NH 4 Cl) is added into the perovskite precursor solution to retard the nucleation which prevents voids formation at the interface of perovskite and glass. The addition of NH 4 Cl also suppresses the formation of PbI 2 and reduces the trap density in the perovskite films. The implementation of NH 4 Cl enables the fabrication of single junction flexible perovskite solar devices with an efficiency of 19.72% on small‐area cells and a record aperture efficiency of 15.86% on modules with an area of 42.9 cm 2 . This work provides a simple way to scale up high‐efficiency flexible perovskite modules for various applications.