Chlorination: An Effective Strategy for High-Performance Organic Solar Cells

Zhao，Qiaoqiao1; Qu，Jianfei1; He，Feng1,2

2020

10.1002/advs.202000509

Advanced Science   影响因子和分区

2198-3844

2198-3844

This work summarizes recent developments in polymer solar cells (PSCs) prepared by a chlorination strategy. The intrinsic property of chlorine atoms, the progress of chlorinated polymers and small molecules, and the synergistic effect of chlorination with other methods to elevate solar conversions are discussed. Halogenation of donor–acceptor (D–A) materials is an effective method to improve the performance of PSCs, which mainly affects the push–pull of electrons between donor and acceptor units due to their strong electron-withdrawing capabilities. Although chlorine is less electronegative than fluorine, it can form very strong noncovalent interactions, such as Cl···S and Cl···π interactions, because its empty 3d orbits can help to accept the electron pairs or π electrons. This synergistic effect of electronegativity together with the empty 3d orbits of chlorine atoms leads to increased intramolecular and intermolecular interactions and a much stronger capability to down-shift the molecular energy levels. This work is intended to support a better understanding of the chlorination strategy to modify the material properties, and thus improve the performance of solar devices. Eventually, it will provide the research community with a clearer pathway to choose proper substitution methods according to different situations for high and stable solar energy conversion.

3d orbital chlorination electronegativity energy levels solar cells

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[21975115][51773087][21733005] ; Shenzhen Fundamental Research Program[JCYJ20190809163011543][JCYJ20180302180238419][KQJSCX20180319114442157] ; Shenzhen Nobel Prize Scientists Laboratory Project[C17213101] ; Guangdong Provincial Key Laboratory of Catalysis[2020B121201002] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06G587] ; Shenzhen Sci-Tech Fund[KYTDPT20181011104007]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000539000100001

WILEY

20202408814474

Electron energy levels ; Ions ; Chemical bonds ; Chlorination ; Chlorine ; Organic solar cells ; Electrons ; Solar energy

Solar Energy and Phenomena:657.1 ; Solar Cells:702.3 ; Physical Chemistry:801.4 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Products Generally:804

2-s2.0-85086116468

Scopus

1.Shenzhen Grubbs Institute and Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
2.Guangdong Provincial Key Laboratory of Catalysis,Southern University of Science and Technology,Shenzhen,518055,China

Zhao，Qiaoqiao,Qu，Jianfei,He，Feng. Chlorination: An Effective Strategy for High-Performance Organic Solar Cells[J]. Advanced Science,2020,7(14).

Zhao，Qiaoqiao,Qu，Jianfei,&He，Feng.(2020).Chlorination: An Effective Strategy for High-Performance Organic Solar Cells.Advanced Science,7(14).

Zhao，Qiaoqiao,et al."Chlorination: An Effective Strategy for High-Performance Organic Solar Cells".Advanced Science 7.14(2020).