Optical and non-linear optical properties of vanadium oxide phthalocyanine films

被引:0
|
作者
L. Guo
G. Ma
Y. Liu
J. Mi
S. Qian
L. Qiu
机构
[1] Physics Department,
[2] Fudan University,undefined
[3] Shanghai 200433,undefined
[4] P.R. China,undefined
[5] Surface Physics Laboratory (National Key Laboratory),undefined
[6] Fudan University,undefined
[7] Shanghai 200433,undefined
[8] P.R. China,undefined
[9] Institute of Photographic Chemistry,undefined
[10] Beijing 100083,undefined
[11] P.R. China,undefined
来源
Applied Physics B | 2002年 / 74卷
关键词
PACS: 42.65.R; 78.66.B; 68.60.B;
D O I
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中图分类号
学科分类号
摘要
The optical and non-linear optical properties of peripheral-substituted vanadium oxide phthalocyanine (VOPc) film and substituted VOPc/polymer composite film were investigated using stationary and transient spectroscopy techniques. The absorption Q band of the VOPc/polymer composite film shows a red shift relative to that of the peripheral-substituted VOPc film, revealing the monomeric characteristics of VOPc molecules. Effective quenching of PL emission was observed for the VOPc/polymer composite film and could be assigned to the efficient VOPc–polymer interaction. From pump-probe and optical Kerr effect (OKE) measurements, two decay components were obtained by fitting the transients for both VOPc films. The fast component, in a femtosecond time domain, originates from the electron–phonon interaction, and the difference in their slow decay is an indication of an efficient ISC process in the VOPc/polymer composite film. The third-order non-linear optical susceptibilities of these films were determined to be in the order of 10-11 esu.
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页码:253 / 257
页数:4
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