Photoinduced photoluminescence intensity enhancement in poly(p-phenylene vinylene) films

被引：17
作者：
Gobato, YG
Marletta, A
Faria, RM
Guimaraes, FEG
de Souza, JM
Pereira, EC
机构：
[1] Univ Fed Sao Carlos, Dept Fis, BR-13560970 Sao Carlos, SP, Brazil
[2] Univ Sao Carlos, Inst Fis Sao Carlos, BR-1350970 Sao Carlos, SP, Brazil
[3] Univ Fed Sao Carlos, LIEC, CMDMC, BR-13560970 Sao Carlos, SP, Brazil
[4] Univ Fed Santa Catarina, BR-88040900 Florianopolis, SC, Brazil
来源：
APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 05期
关键词：
D O I：
10.1063/1.1497198
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report measurements of photoluminescence (PL) intensity enhancement in poly(p-phenylene vinylene) (PPV) films induced by light irradiation in the presence of air. This effect is dependent on laser intensity and the ratio between film thickness and excitation penetration depth. The results suggest that an efficient spectral diffusion of excited carriers to nondegraded PPV segments by Forster energy transfer is an important consideration in the PL efficiency of conjugated polymers light-irradiated in air. (C) 2002 American Institute of Physics.
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页码：942 / 944
页数：3
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