Investigation of Hole-Transporting Poly(triarylamine) on Aggregation and Charge Transport for Hysteresisless Scalable Planar Perovskite Solar Cells

• DOI: 10.1021/acsami.7b18745
• Publication Date: 2018-03-20T13:09:07Z
• Authors: Yohan Ko; Yechan Kim; Chanyong Lee; Youbin Kim; Yongseok Jun
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy

Organometallic halide perovskite solar cells (PSCs) have unique photovoltaic properties for use in next-generation energy harvesting systems. The highest efficiency of PSCs reached 22.1% on a laboratory scale <0.1 cm2 device area. Thus, scaling up is the next step toward commercialization, but difficulty controlling quality large-area thin films remains fundamental challenge. It has also been frequently reported that J- V hysteresis intensified with areas larger than 1 cm2. In this study, we fabricated layer using PbICl films, providing an intrinsic porous and enhancing uniformity at Furthermore, investigated polymeric prevalent hole-transporting material poly(triarylamine) (PTAA) its performance. Two types PTAAs, poly[bis(4-phenyl)(2,4-dimethylphenyl)amine] poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine], were compared. A series PTAAs different molecular weights ( Mw) polydispersity indices studied, as weight PTAA key factor determining electrical performance system. aperture area based high-molecular-weight achieved power conversion 16.47% negligible excellent reproducibility.