Ionic liquid-assisted perovskite crystal film growth for high performance planar heterojunction perovskite solar cells. Issue 100 (13th October 2016)

• Record Type: Journal Article
• Authors: Wan, Yangyang; Dong, Sujuan; Wang, Yaling; Yang, Liying; Qin, Wenjing; Cao, Huanqi; Yao, Cong; Ge, Ziyi; Yin, Shougen
• Is Part Of: RSC advances. Volume 6:Issue 100(2016)
• Page Start: 97848
• Page End: 97852
• Publication Date: 2016-10-13
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra24616h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Ionic liquid, 1-ethylpyridinium chloride with a relative low melting point of 100 °C is used to control the morphological growth of CH3 NH3 PbI3 during the one-step deposition method for preparing efficient planar heterojunction perovskite solar cells. Abstract : We demonstrate an efficient approach by using a new type of ionic liquid, 1-ethylpyridinium chloride (1-EC) with a relative low melting point of 100 °C, to control the morphological growth of CH3 NH3 PbI3 during the one-step deposition method for preparing efficient planar heterojunction perovskite solar cells, leading to a continuous and dense morphology without large voids and pinhole. With the optimized concentration, 11.8% power conversion efficiency was obtained. Our work paves the way to optimize the morphology of perovskite by adopting a new kind of ionic liquid as additive. This method has great benefits for exploiting new technologies for large-scale perovskite solar cells on the flexible substrate.