ESR study of Li-doped polyacenic semiconductor (PAS) materials

被引：14

作者：

Tanaka, K ^{[1
]}

Ago, H ^{[1
]}

Matsuura, Y ^{[1
]}

Kuga, T ^{[1
]}

Yamabe, T ^{[1
]}

Yata, S ^{[1
]}

Hato, Y ^{[1
]}

Ando, N ^{[1
]}

机构：

[1] KANEBO LTD,BATTERY BUSINESS PROMOT,MIYAKOJIMA KU,OSAKA 534,JAPAN

来源：

SYNTHETIC METALS | 1997年 / 89卷 / 02期

关键词：

polyacenic semiconductors; lithium doping; electron spin resonance; batteries;

D O I：

10.1016/S0379-6779(98)80114-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electronic states of Li-doped polyacenic semiconductor ( PAS) materials have been examined based on electron spin resonance (ESR) observations. It has been found that Li doping causes not only metallic transition but increase in the peak-to-peak linewidth (Delta H-pp) of the ESR lineshape, probably due to enhancement of the spin-orbit interactions occurring in conduction electrons on the Li atoms. Increase in Delta H-pp has been observed up to the C2Li stage without any sign of liberation of Li clusters. The temperature dependence of Delta H-pp suggests a certain hopping process for conduction electrons to migrate onto Li atoms. The PAS samples doped beyond the C,Li stage have shown a two-phase ESR spectrum, which consists of a broader component coming from the original carbon pi-radicals and a narrow spike from the liberated Li clusters. (C) 1997 Elsevier Science S.A.

引用

页码：133 / 139

页数：7

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