Shi Shengwei, Li Jing, Bu Tongle, Yang Shili, Xiao Junyan, Peng Yong, Li Wei, Zhong Jie, Ku Zhiliang, Cheng Yi-Bing, Huang Fuzhi
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology Wuhan 430070 PR China
School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 PR China.
RSC Adv. 2019 Mar 29;9(18):9946-9950. doi: 10.1039/c8ra10603g. eCollection 2019 Mar 28.
Tin oxide (SnO) is widely used as electron transport layer (ETL) material in perovskite solar cells (PSCs). Numerous synthesis methods for SnO have been reported, but they all require a proper thermal treatment for the SnO ETLs. Herein we present a simple method to synthesize SnO nanoparticles (NPs) at room temperature. By using butyl acetate as a precipitator and a proper UV-Ozone treatment to remove Cl residuals, excellent SnO ETLs were obtained without any thermal annealing. The highest power conversion efficiency (PCE) of the prepared PSCs was 19.22% for reverse scan (RS) and 18.79% for forward scan (FS). Furthermore, flexible PSCs were fabricated with high PCEs of 15.27%/14.74% (RS/FS). The low energy consuming SnO ETLs therefore show great promise for the flexible PSCs' commercialization.
氧化锡（SnO）作为电子传输层（ETL）材料在钙钛矿太阳能电池（PSC）中被广泛应用。已经报道了许多合成SnO的方法，但它们都需要对SnO电子传输层进行适当的热处理。在此，我们提出一种在室温下合成SnO纳米颗粒（NPs）的简单方法。通过使用乙酸丁酯作为沉淀剂并进行适当的紫外臭氧处理以去除Cl残余物，无需任何热退火即可获得优异的SnO电子传输层。制备的PSC的最高功率转换效率（PCE）对于反向扫描（RS）为19.22％，对于正向扫描（FS）为18.79％。此外，制备的柔性PSC的PCE高达15.27％/ 14.74％（RS / FS）。因此，低能耗的SnO电子传输层对于柔性PSC的商业化显示出巨大的前景。
