Localization length scales of triplet excitons in singlet fission materials

被引：17

作者：

Bayliss, Sam L. ^{[1
]}

Thorley, Karl J. ^{[2
]}

Anthony, John E. ^{[2
]}

Bouchiat, Helene ^{[3
]}

Greenham, Neil C. ^{[1
]}

Chepelianskii, Alexei D. ^{[1
,3
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

[3] Univ Paris 11, LPS, CNRS, UMR 8502, F-91405 Orsay, France

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 11期

基金：

英国工程与自然科学研究理事会; 美国国家科学基金会;

关键词：

FUNCTIONALIZED PENTACENE; DELAYED FLUORESCENCE; THIN-FILM; PHOTOVOLTAICS; NANOCRYSTALS; TETRACENE; POLYMERS; DYNAMICS; CHAINS;

D O I：

10.1103/PhysRevB.92.115432

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We measure the dielectric confinement length scales of triplet excitons in organic semiconductors by jointly measuring their microwave-domain electric and magnetic susceptibilities. We apply this technique to characterize triplet excitons in two singlet fission materials with distinct solid-state packing and correlate the extracted localization length scales with the role of the excitonic environment. By using the magnetic susceptibility simultaneously determined through our experiments, we compare the independently extracted dielectric and spin-spin localization length scales, highlighting the role of local anisotropy on the properties of excitonic triplet states.

引用

页数：7

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