title: Random Terpolymer Designed with Tunable Fluorescence Lifetime for Efficient Organic/Inorganic Hybrid Solar Cells.
abstract: The long photoluminescence lifetime of the organic semiconductor materials is of great importance in assuring the photoexcited extion to have enough time to achieve successful separation at the interface and improving the performances of organic/inorganic hybrid solar cells. Unfortunately, many efforts have been devoted to the bandgap or molecular energy level control, whereas this viewpoint is rarely referred. Herein, we prepare a random D-A terpolymers based on PZT and BDT cores in conjugation with electron withdrawing BT unit and explore their applications in HSCs. Except for the energy level and the bandgap, the role that monomers ratio plays in photoluminescence lifetime is particularly involved. As a result, the average PL lifetimes of the terpolymer are significantly tuned. The optimized terpolymer exhibits a longer PL lifetime and prominent charge transfer ability, thus leading to a notable enhancement of PCE when compared with its counterparts, although their bandgaps and molecular energy levels are almost the same.
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Li
authors.forename: Xiao
authors.initials: X
authors.lastname: Jin
authors.affiliation: ⊥Department of Physics, Harbin Institute of Technology, Harbin 150001, P. R. China.
authors.forename: Yinglin
authors.initials: Y
authors.lastname: Song
authors.forename: Qin
authors.initials: Q
authors.lastname: Zhang
authors.forename: Zhongyuan
authors.initials: Z
authors.lastname: Xu
authors.affiliation: ∥School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia.
authors.forename: Zihan
authors.initials: Z
authors.lastname: Chen
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Cheng
authors.forename: Xubiao
authors.initials: X
authors.lastname: Luo
keywords: charge photogeneration dynamics; fluorescence lifetime; organic/inorganic hybrid solar cell; phenothiazine; random terpolymer