Yangyang Hao, Yue Liu*, Guorui Cao*
Journal of Renewable Materials, Vol.10, No.12, pp. 3505-3519, 2022, DOI:10.32604/jrm.2022.023122
Abstract Aiming to reduce the defects of perovskite film and improve carrier transport, an organic small molecule, benzo
[d]isothiazol-3(2H)-one 1,1-dioxide (OBS), is introduced as an additive in the solution-processing of perovskite
and prepare uniform perovskite films with a continuous distribution of OBS at grain boundaries. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy are conducted to reveal the interactions of
hydrogen bonding and coordination bonding between OBS and perovskite. Various characterizations (including
X-ray diffraction, UV-vis spectroscopy, electrochemical impedance spectroscopy, etc.) are conducted to uncover
the effect of OBS on device performance. Consequently, high efficiency of 23.26% is obtained for the OBS-treated… More >
Graphic Abstract
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