Electrically detected magnetic resonance applied to polyaniline

被引：3
|
作者：
Graeff, CFO
Brunello, CA
Faria, RM
机构：
[1] USP, FFCLRP, Dept Fis & Matemat, BR-14040901 Ribeirao Preto, Brazil
[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
来源：
SYNTHETIC METALS | 1999年 / 101卷 / 1-3期
基金：
巴西圣保罗研究基金会;
关键词：
transport measurements; electron spin resonance; polyaniline and derivatives;
D O I：
10.1016/S0379-6779(98)00836-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The transport properties of polyaniline films have been investigated by electrically detected magnetic resonance (EDMR) in different protonation states. In polyaniline, a spin-dependent interchain tunneling involving a polaron-polaron transition is found. The EDMR signal in polyaniline is found to be dependent on the DC electric field, protonation level as well as the atmosphere. For low electric fields, and samples with parallel contacts (F < 1000 V/cm) one resonance line is observed, for higher fields, two resonance lines are observed having similar g-factors but different linewidths. For samples with sandwich only one broad resonance is observed.
引用
收藏
页码：805 / 806
页数：2
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