Photoluminescence excitation spectra of pristine and photo-oxidised poly(p-phenylenevinylene)

被引：2
作者：
Harrison, NT
Friend, RH
机构：
来源：
SYNTHETIC METALS | 1997年 / 84卷 / 1-3期
关键词：
poly(p-phenylenevinylene); photoluminescence;
D O I：
10.1016/S0379-6779(97)80841-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present photoluminescence excitation (PLE) spectra for pristine and photo-oxidised samples of poly(p-phenylenevinylene) (PPV). In pristine PPV we observe a constant photoluminescnce efficiency for excitation wavelengths in the range 500-250 nm. In contrast, in photo-oxidised PPV samples the PLE spectrum is very sensitive to the degree of oxidation. In particular the PL efficiency decreases at short excitation wavelengths in an oxidised sample.
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页码：513 / 514
页数：2
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