Premium
Cold Antisolvent Bathing Derived Highly Efficient Large‐Area Perovskite Solar Cells
Author(s) -
Jang Gyumin,
Kwon HyeokChan,
Ma Sunihl,
Yun SeongCheol,
Yang Hyunha,
Moon Jooho
Publication year - 2019
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.201901719
Subject(s) - materials science , perovskite (structure) , fabrication , nucleation , energy conversion efficiency , photovoltaic system , solar cell , substrate (aquarium) , chemical engineering , optoelectronics , nanotechnology , perovskite solar cell , medicine , ecology , chemistry , alternative medicine , oceanography , organic chemistry , pathology , engineering , biology , geology
Scaling large‐area solar cells is in high demand for the commercialization of perovskite solar cells (PSCs) with a high power‐conversion efficiency (PCE). However, few roll‐to‐roll‐compatible deposition methods for the formation of highly oriented uniform perovskite films are reported. Herein, a facile cold antisolvent bathing approach compatible with large‐area fabrication is introduced. The wet precursor films are submerged in a cold antisolvent bath at 0 °C, and the retarded nucleation and growth kinetics allow highly oriented perovskite to be grown along the [110] and [220] directions, perpendicular to the substrate. The high degree of the preferred crystal orientation benefits the effective charge extraction and reduces the amount of inter‐ and intra‐grain defects inside the perovskite films, improving the PCE from 16.48% (ambient‐bathed solar cell) to 18.50% (cold‐bathed counterpart). The cold antisolvent bathing method is employed for the fabrication of large‐area (8 × 10 cm 2 ) PSCs with uniform photovoltaic device parameters, thereby verifying the scale‐up capability of the method.