title: Tellurophene-Based N-type Copolymers for Photovoltaic Applications.
abstract: Novel tellurophene-based n-type copolymers are synthesized and characterized with thermal analysis, electrochemistry, optical spectroscopy, and DFT calculations. The copolymers demonstrate reversible interactions with bromine. Through tuning of the building blocks and alkyl chains together with device engineering, the maximum power conversion efficiency of all-polymer solar cells improves from 2.8 to 4.3%, which is supported by photoluminescence, atomic force microscopy, transmission electron microscopy, the space charge limit current method, and exciton dynamic studies. These results suggest that tellurophene-based n-type copolymers are promising electron acceptors for organic solar cells and potential sensor materials for bromine detection.
authors.affiliation: College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Lv
authors.affiliation: College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.|Beijing Key Laboratory of Functional Materials for Molecular & Structure Construction, School of Materials Science and Engineering, University of Science and Technology-Beijing , Beijing 100083, P. R. China.
authors.forename: Xiaofen
authors.initials: X
authors.lastname: Wang
authors.affiliation: College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Xinlong
authors.initials: X
authors.lastname: Wang
authors.affiliation: College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Yang
authors.affiliation: College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Tao
authors.initials: T
authors.lastname: Dong
authors.affiliation: Beijing Key Laboratory of Functional Materials for Molecular & Structure Construction, School of Materials Science and Engineering, University of Science and Technology-Beijing , Beijing 100083, P. R. China.
authors.forename: Zhou
authors.initials: Z
authors.lastname: Yang
authors.affiliation: College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 100049, P. R. China.
authors.forename: Hui
authors.identifier: http://orcid.org/0000-0002-6102-2815
authors.initials: H
authors.lastname: Huang
keywords: all-polymer solar cells; bromine detection; molecular engineering; n-type copolymers; tellurophene