Laboratory of Advanced Optoelectronic Materials, College of Chemistry Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China.
CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China.
ACS Appl Mater Interfaces. 2018 May 2;10(17):14796-14802. doi: 10.1021/acsami.8b03225. Epub 2018 Apr 19.
In this study, a room-temperature and aqueous solution-processed two-dimensional (2D) transition-metal dichalcogenide TiS was applied as an electron transport layer (ETL) in planar n-i-p perovskite solar cells (Pero-SCs). Upon insertion of the 2D TiS ETL with UV-ozone (UVO) treatment, the power conversion efficiency (PCE) of the planar Pero-SCs was optimized to 18.79%. To the best of our knowledge, this value should be the highest efficiency to date among those PCEs of the n-i-p Pero-SCs with room-temperature-processed metal compound ETLs. More importantly, the n-i-p Pero-SCs with the UVO-treated 2D TiS as an ETL also show extremely high stability, where the average PCE remained over 95% of its initial value after 816 h storage without encapsulation.
在这项研究中,将一种在室温下、水溶液处理的二维(2D)过渡金属二硫属化物 TiS 用作平面 n-i-p 钙钛矿太阳能电池(Pero-SC)中的电子传输层(ETL)。在插入经过紫外臭氧(UVO)处理的二维 TiS ETL 后,平面 Pero-SC 的功率转换效率(PCE)优化至 18.79%。据我们所知,这一数值应该是目前具有室温处理金属化合物 ETL 的 n-i-p Pero-SC 的最高效率。更重要的是,采用 UVO 处理的二维 TiS 作为 ETL 的 n-i-p Pero-SC 还具有极高的稳定性,在没有封装的情况下,经过 816 小时储存后,其平均 PCE 仍保持在初始值的 95%以上。