Design Principles for Efficient Singlet Fission in Anthracene-based Organic Semiconductors

被引：0

作者：

Bae, Youn Jue ^{[1
,2
]}

Christensen, Joseph A. ^{[1
,2
]}

Kang, Gyeongwon ^{[1
,2
]}

Malliakas, Christos D. ^{[1
,2
]}

Zhou, Jiawang ^{[1
,2
]}

Nelson, Jordan N. ^{[1
,2
]}

Young, Ryan M. ^{[1
,2
]}

Wu, Yi-Lin ^{[1
,2
,3
]}

Van Duyne, Richard P. ^{[1
,2
]}

Schatz, George C. ^{[1
,2
]}

Wasielewski, Michael R. ^{[1
,2
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[2] Northwestern Univ, Inst Sustainabil & Energy Northwestern, Evanston, IL 60208 USA

[3] Cardiff Univ, Sch Chem, Main Bldg,Pk Pl, Cardiff CF10 3AT, S Glam, Wales

来源：

PHYSICAL CHEMISTRY OF SEMICONDUCTOR MATERIALS AND INTERFACES XVIII | 2019年 / 11084卷

关键词：

Singlet Fission; Organic Semiconductors; Frankel Excitons; Anthracene; EXCITON-FISSION; TRIPLET EXCITONS; YIELD;

D O I：

10.1117/12.2527346

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Singlet fission (SF) in two or more electronically coupled organic chromophores converts a high-energy singlet exciton into two low-energy triplet excitons, which can be used to increase solar cell efficiency. Many known SF chromophores are unsuitable for device applications due to chemical instability and low triplet state energies. This work summarizes structurally dependent SF dynamics for 9,10-bis(phenylethynyl)anthracene (BPEA) and its derivatives in the solid-state using time-resolved optical spectroscopies, and electronic structure calculations. By modulating the packing structure in thin films, we can effectively tune electronic energy and coupling. The systematic study in BPEA organic semiconductors shows that maximizing the thermodynamic driving force can achieve the highest SF rate and efficiency.

引用

页数：7

共 21 条

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