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Proceedings Paper

Raman scattering gain in DOO-PPV films
Author(s): Maxim N. Shkunov; Werner Gellermann; Akihiko Fujii; Katsumi Yoshino; Z. Valy Vardeny
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Paper Abstract

We have investigated the optical emission characteristics of poly(2,5-dioctyloxy-p-phenylenevinylene) (DOO-PPV) thin films under high intensity ps pulsed laser excitation (Ipump > 1 MW/cm2). We observed that the emission spectrum consist of a spectrally narrowed emission (SNE) band (FWHM approximately 10 nm) and superimposed sharp spectral lines. High resolution spectral measurements conducted at room and liquid nitrogen temperatures show that the spectral width of these lines is less than 1 nm. The lines peak positions are independent of film thickness, however, they shift upon changing the excitation wavelength. Also, the excitation intensity dependence of these narrow lines is found to be different from that of the SNE band. We argue that the narrow lines are due to Raman scattering gain of the 1st, 2nd and 3d order Raman active modes of DOO-PPV.

Paper Details

Date Published: 1 December 1997
PDF: 7 pages
Proc. SPIE 3145, Optical Probes of Conjugated Polymers, (1 December 1997); doi: 10.1117/12.295526
Show Author Affiliations
Maxim N. Shkunov, Univ. of Utah (United States)
Werner Gellermann, Univ. of Utah (United States)
Akihiko Fujii, Univ. of Utah (United States)
Osaka Univ. (Japan)
Katsumi Yoshino, Osaka Univ. (Japan)
Z. Valy Vardeny, Univ. of Utah (United States)

Published in SPIE Proceedings Vol. 3145:
Optical Probes of Conjugated Polymers
Z. Valy Vardeny; Lewis J. Rothberg, Editor(s)

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