ODMR SPECTROSCOPY OF PHOTOEXCITATIONS IN C-60 AND C-70 POLYSTYRENE GLASSES

被引：23

作者：

WEI, X ^{[1
]}

VARDENY, ZV ^{[1
]}

MOSES, D ^{[1
]}

SRDANOV, VI ^{[1
]}

WUDL, F ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,INST POLYMERS & ORGAN SOLIDS,SANTA BARBARA,CA 93106

来源：

SYNTHETIC METALS | 1993年 / 54卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0379-6779(93)91070-I

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have used a variety of optical characterization techniques to study photoexcitations in C60 and C70 fullerenes as dispersion in polystyrene glass. These techniques include photoluminescence (PL), photomodulation (PM) and their respective versions of optically detected magnetic resonance (ODMR). In both fullerenes at 4 K we found long-lived (approximately 5 ms in C60 and 0.5 s in C70) triplet excitons with two pronounced PA bands below the gap. The zero-field splitting parameters indicate that the triplet excitons are delocalized over the entire molecule: 6 angstrom in C60 and 7.8 angstrom in C70.

引用

页码：273 / 279

页数：7

共 20 条

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