TY - JOUR
T1 - Highly Crystalline Perovskite-Based Photovoltaics via Two-Dimensional Liquid Cage Annealing Strategy
AU - Lee, Jong Woo
AU - Yu, Haejun
AU - Lee, Kisu
AU - Bae, Sohyeon
AU - Kim, Jungwon
AU - Han, Gi Rim
AU - Hwang, Doyk
AU - Kim, Seong Keun
AU - Jang, Jyongsik
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/4/10
Y1 - 2019/4/10
N2 - Rendering a high crystalline perovskite film is integral to achieve superior performance of perovskite solar cells (PSCs). Here, we established a two-dimensional liquid cage annealing system, a unique methodology for remarkable enhancement in perovskite crystallinity. During thermal annealing for crystallization, wet-perovskite films were suffocated by perfluorodecalin with distinctively low polarity, nontoxic, and chemically inert characteristics. This annealing strategy facilitated enlargement of perovskite grain and diminution in the number of trap states. The simulation results, annealing time, and temperature experiments supported that the prolonged diffusion length of precursor ions attributed to the increase of perovskite grains. Consequently, without any complicated handling, the performance of perovskite photovoltaics was remarkably improved, and the monolithic grains which directly connected the lower and upper electrode attenuated hysteresis.
AB - Rendering a high crystalline perovskite film is integral to achieve superior performance of perovskite solar cells (PSCs). Here, we established a two-dimensional liquid cage annealing system, a unique methodology for remarkable enhancement in perovskite crystallinity. During thermal annealing for crystallization, wet-perovskite films were suffocated by perfluorodecalin with distinctively low polarity, nontoxic, and chemically inert characteristics. This annealing strategy facilitated enlargement of perovskite grain and diminution in the number of trap states. The simulation results, annealing time, and temperature experiments supported that the prolonged diffusion length of precursor ions attributed to the increase of perovskite grains. Consequently, without any complicated handling, the performance of perovskite photovoltaics was remarkably improved, and the monolithic grains which directly connected the lower and upper electrode attenuated hysteresis.
UR - http://www.scopus.com/inward/record.url?scp=85064215541&partnerID=8YFLogxK
U2 - 10.1021/jacs.8b13423
DO - 10.1021/jacs.8b13423
M3 - Article
C2 - 30905150
AN - SCOPUS:85064215541
SN - 0002-7863
VL - 141
SP - 5808
EP - 5814
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 14
ER -