title: Dopant-Free Hole-Transporting Material with a C3h Symmetrical Truxene Core for Highly Efficient Perovskite Solar Cells.
abstract: Herein we present a new structural design of hole-transporting material, Trux-OMeTAD, which consists of a C3h Truxene-core with arylamine terminals and hexyl side-chains. This planar, rigid, and fully conjugated molecule exhibits excellent hole mobility and desired surface energy to the perovskite uplayer. Perovskite solar cells fabricated using the p-i-n architecture with Trux-OMeTAD as the p-layer, show a high PCE of 18.6% with minimal hysteresis.
authors.affiliation: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Chuyi
authors.initials: C
authors.lastname: Huang
authors.affiliation: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Weifei
authors.initials: W
authors.lastname: Fu
authors.affiliation: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Chang-Zhi
authors.initials: CZ
authors.lastname: Li
authors.affiliation: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Zhongqiang
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Imec , Kapeldreef 75, 3001 Heverlee, Belgium.
authors.forename: Weiming
authors.initials: W
authors.lastname: Qiu
authors.affiliation: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Minmin
authors.initials: M
authors.lastname: Shi
authors.affiliation: Imec , Kapeldreef 75, 3001 Heverlee, Belgium.
authors.forename: Paul
authors.initials: P
authors.lastname: Heremans
authors.affiliation: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou 310027, P. R. China.|Department of Materials Science & Engineering, University of Washington , Seattle, Washington 98195, United States.
authors.forename: Alex K-Y
authors.initials: AK
authors.lastname: Jen
authors.affiliation: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Hongzheng
authors.initials: H
authors.lastname: Chen