A simple fabrication of CH3NH3PbI3 perovskite for solar cells using low-purity PbI2. (January 2017)

• Record Type: Journal Article
• Authors: Guo, Nanjie; Zhang, Taiyang; Li, Ge; Xu, Feng; Qian, Xufang; Zhao, Yixin
• Is Part Of: Journal of semiconductors. Volume 38:Number 1(2017:Jan.)
• Publication Date: 2017-01
• Subjects: perovskite material -- low-quality PbI2 -- hydrochloric acid; 85.40.-e; Semiconductors -- Periodicals; 621.38152
• DOI: 10.1088/1674-4926/38/1/014004
• Languages: English
• ISSNs: 1674-4926

Abstract

Abstract: The CH3 NH3 PbI3 (MAPbI3 ) perovskite was usually prepared by high-purity PbI2 with high cost. The low cost and low-purity PbI2 was seldom reported for fabrication of MAPbI3 because it cannot even dissolve well in widely adopted solvent of DMF. We developed an easy method to adapt low-purity PbI2 for fabrication of high quality MAPbI3 just by the simple addition of some hydrochloric acid into the mixture of low-purity PbI2, MAI and DMF. This straightforward method can not only help dissolve the low quality PbI2 by reacting with some impurities in DMF, but also lead to a successful fabrication of high-quality perovskite solar cells with up to 14.80% efficiency comparable to the high quality PbI2 precursors.