Formation and characterization of preferred oriented perovskite thin films on single-crystalline substrates. (1st June 2018)

• Record Type: Journal Article
• Authors: Chen, Lung-Chien; Chen, Cheng-Chiang; Chang, Sheng Hsiung; Lee, Kuan-Lin; Tseng, Zong-Liang; Chen, Sheng-Hui; Kuo, Hao-Chung
• Is Part Of: Materials research express. Volume 5:Number 6(2018)
• Publication Date: 2018-06-01
• Subjects: preferred orientation -- CH3NH3PbI3 thin films -- crystalline substrate -- lattice mismatch -- defect emissions -- 2D-XRD -- time-resolved PL; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/aac625
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Three single-crystalline (Al2 O3, GaN/Al2 O3 and InAs) substrates are used to assist the formation of crystallographically preferred oriented CH3 NH3 PbI3 (MAPbI3 ) thin films. The estimation of the lattice mismatch at the MAPbI3 /substrate interface and water-droplet contact angle experiments indicate that the formation of a preferred oriented MAPbI3 thin film is induced by the single-crystalline substrate and is insensitive to the surface wettibility of the substrate. Moreover, the experimental results suggest that the lattice mismatch at the MAPbI3 /single-crystalline semiconductor interface can strongly influence the photovoltaic performance of tandem solar cells.