Suppression of deep-level traps via semicarbazide hydrochloride additives for high-performance tin-based perovskite solar cells
Wenbo Jia,
Yi Jing,
Han Zhang
et al.
Abstract:Tin perovskites with exemplary optoelectronic properties offer potential application in lead-free perovskite solar cells. However, Sn vacancies and undercoordinated Sn ions on the tin perovskite surfaces can create deep-level traps, leading to non-radiative recombination and absorption of nucleophilic O2 molecules, impeding further device efficiency and stability. Here, in this study, a new additive of semicarbazide hydrochloride (SEM-HCl) with a N–C=O functional group was introduced into the perovskite precur… Show more
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