Optical and non-linear optical properties of vanadium oxide phthalocyanine films |
| |
| Authors: | L Guo G Ma Y Liu J Mi S Qian L Qiu |
| |
| Institution: | (1) Physics Department, Fudan University, Shanghai 200433, P.R. China, CN;(2) Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433, P.R. China, CN;(3) Institute of Photographic Chemistry, Beijing 100083, P.R. China, CN |
| |
| Abstract: | 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.
Received: 25 October 2001 / Revised version: 8 January 2002 / Published online: 7 February 2002 |
| |
| Keywords: | PACS: 42 65 R 78 66 B 68 60 B |
| 本文献已被 SpringerLink 等数据库收录！ |
|
