标题：Polyol Modification of PEDOT: PSS as Hole Transport Material Affects the Performance and Stability of Calcium Titanate (CaTiO 3 ) Solar Cell and UV Photodetector
摘要：This report a novel and straightforward architecture of CaTiO 3 based solar cells with optimized hole transport material (HTM) properties. The perovskite CaTiO 3 particle was prepared via the solution process using different CaCO 3 /TiO 2 ratios. The design of CaTiO 3 -based solar cell follows the inverted architecture, in which poly (4-styrene sulfonate)-doped poly (3, 4-ethylenedioxy-thiophene (PEDOT:PSS) and PCBM-C70 were used as HTM and electron transport layer (ETL), respectively. Charge mobility of HTM was modified and improved by using either ethylene glycol (EG) or diethylene glycol (DEG). The optimum condition of CaTiO 3 -based solar cell was obtained using CaCO 3 /TiO 2 ratio of (1:7) annealed at 900 °C and 44.4 % (v/v) DEG-modified PEDOT/PSS. The conversion efficiency of 3.1 % with a stable solar cell performance up to 72 h under the ambient condition without encapsulation was achieved.
关键词：Electron transport layer; inverted structure; Perovskite
CaTiO3 particle; perovskite solar cell; polyol alteration
