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Substrate Dependence of Photoacoustic Spectra on 3, 4, 9, 10-Perylenetetracarboxylic Dianhydride (PTCDA) Films

Masaki OKAMOTO, Yoshihiro INOUE, Koichi YOSHIHARA, Toshio KAWAHARA, Jun MORIMOTO

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Summary :

Photoacoustic (PA) spectra on the 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) films deposited by the vacuum evaporation were measured. The films have layered structures constructed from the perylene molecule plane structures. The crystal quality depended on the deposited substrate and the photoacoustic spectroscopy (PAS) seems to be the very useful tools to evaluate these properties from the non-radiative features. The films deposited on the three different substrate had the almost same PL spectra, but the films deposited on the glass substrate had the large non-radiative peaks in the PA spectra contrary to the films deposited on the alumina or crystal Si (100) those had the non-radiative peaks only observed at the short wavelength region.

Publication
IEICE TRANSACTIONS on Electronics Vol.E87-C No.12 pp.2108-2111
Publication Date
2004/12/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Section on Recent Progress in Organic Molecular Electronics)
Category
Evaluation Methods and Characterization of Organic Materials

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