TY - JOUR
T1 - 1,1-Dicyanomethylene-3-Indanone End-Cap Engineering for Fused-Ring Electron Acceptor-Based High-Performance Organic Photovoltaics
AU - Huang, Jiaming
AU - Tang, Hua
AU - Yan, Cenqi
AU - Li, Gang
N1 - Funding Information:
This work was supported by the Research Grants Council of Hong Kong (project numbers 15218517 and C5037-18G ), the National Natural Science Foundation of China ( 51961165102 ), the Shenzhen Science and Technology Innovation Commission ( JCYJ20170413154602102 ), and the Hong Kong Polytechnic University Internal Research Funds: Project of Strategic Importance ( 1-ZE29 ), Sir Sze-yuen Chung Endowed Professorship Fund ( 8-8480 ), University Supporting Fund for Major Research ( 1-BBAS ), and Postdoctoral Fellowships Scheme ( YW3Y ).
Publisher Copyright:
© 2020 The Authors
PY - 2021/1/20
Y1 - 2021/1/20
N2 - Organic photovoltaics (OPVs) have developed rapidly since the advent of fused-ring electron acceptors (FREAs). FREAs bearing bulky fused-ring cores, end-capped with electron-withdrawing groups, present advantages such as broad absorption, tunable frontier orbital levels, and good thermal stability. Recent breakthroughs demonstrate that FREA-based OPVs have achieved more than 17% efficiency, among which the end groups (EGs) of 1,1-dicyanomethylene-3-indanone (IC) and derivatives are critical for the performance enhancement. To date, more than 50 IC derivatives have been reported to construct high-performance FREA-based OPVs. In this review, we first introduce the chemical structure and synthesis route of the IC group. We discuss and classify the recent progress of FREAs based on IC and its derivatives, as well as the impact of IC on the morphology. We consider the issues the IC EGs face, including stability, isomerism, and EG redistribution, finally proposing some future directions for FREAs based on IC and its derivatives.
AB - Organic photovoltaics (OPVs) have developed rapidly since the advent of fused-ring electron acceptors (FREAs). FREAs bearing bulky fused-ring cores, end-capped with electron-withdrawing groups, present advantages such as broad absorption, tunable frontier orbital levels, and good thermal stability. Recent breakthroughs demonstrate that FREA-based OPVs have achieved more than 17% efficiency, among which the end groups (EGs) of 1,1-dicyanomethylene-3-indanone (IC) and derivatives are critical for the performance enhancement. To date, more than 50 IC derivatives have been reported to construct high-performance FREA-based OPVs. In this review, we first introduce the chemical structure and synthesis route of the IC group. We discuss and classify the recent progress of FREAs based on IC and its derivatives, as well as the impact of IC on the morphology. We consider the issues the IC EGs face, including stability, isomerism, and EG redistribution, finally proposing some future directions for FREAs based on IC and its derivatives.
KW - 1,1-dicyanomethylene-3-indanone
KW - end-capped group engineering
KW - fused-ring electron acceptors
KW - organic photovoltaics
UR - http://www.scopus.com/inward/record.url?scp=85100606516&partnerID=8YFLogxK
U2 - 10.1016/j.xcrp.2020.100292
DO - 10.1016/j.xcrp.2020.100292
M3 - Review article
AN - SCOPUS:85100606516
SN - 2666-3864
VL - 2
JO - Cell Reports Physical Science
JF - Cell Reports Physical Science
IS - 1
M1 - 100292
ER -