Magnetic-field-controlled charge transport in organic polymer composites

被引：2

作者：

Krinichnyi, Victor I. ^{[1
]}

Yudanova, Evgeniya I. ^{[1
]}

机构：

[1] RAS, Inst Problems Chem Phys, Dept Kinet & Catalysis, Acad Semenov Ave 1, Chernogolovka 142432, Russia

来源：

CHEMICAL PHYSICS LETTERS | 2021年 / 778卷

基金：

俄罗斯基础研究基金会;

关键词：

Light-induced EPR; Polymer photovoltaics; Spin relaxation; Spin susceptibility; Spin traps; BULK-HETEROJUNCTIONS; MULTIFREQUENCY EPR; SEPARATION; POLARON; ESR;

D O I：

10.1016/j.cplett.2021.138787

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Spin properties of charge carriers photoexcited in the P3HT:PC61BM and PCDTBT:PC61BM composites were studied at X-band EPR spectroscopy. Light-induced EPR spectra were deconvoluted and the contributions of all spin charge carriers were determined. The main magnetic resonance parameters of charge carriers obtained were compared with those determined at millimeter EPR wavebands and analyzed as a function of electron precession frequency. The linewidth of spin charge carriers was established to originated mainly due to the weak anisotropy of their g-factors. The external magnetic field significantly affects dynamics, electron relaxation and recombination of spin charge carriers.

引用

页数：6

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