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Photoluminescence of C60Thin Films at Low Temperatures

 

作者: Anatoliy Avdeenko,   Nina Churakova,   Victor Eremenko,   Nikolay Gorbenko,   Anatoliy Pugachev,   Nataliya Silaeva,   Yuriy Tiunov,   Piotr Zinoviev,  

 

期刊: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals  （Taylor Available online 1998）
卷期: Volume 324, issue 1  

页码: 89-94

 

ISSN:1058-725X

 

年代: 1998

 

DOI:10.1080/10587259808047139

 

出版商: Taylor & Francis Group

 

关键词: fullerite C60;low temperature photoluminescence;transmission high energy electron diffraction;X-traps;Frenkel exciton

 

数据来源: Taylor

 

摘要:

Photoluminescence spectra of thin films (free and on (001) surface of NaCl wafer) of fullerite C60are studied at 5 K. Film structures were analyzed by standard transmission high energy electron diffraction (THEED) technique. Influence of film structure and substrate on luminescence spectra was observed. It is assumed that the decay of Frenkel excitons on grains boundaries in nanodispersive films competes with energy transport to X-traps and the intensity of excited X-traps photoluminescence strongly decrease. It is supposed that this effect is revealed when a singlet exciton diffusion length is comparable with grains sizes.

 

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