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Proceedings Paper

Photorefractive molecular composite bearing the phenothiazine derivatives
Author(s): Dong Hoon Choi; Woong Gi Jun; Kwang Yong Oh
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Paper Abstract

We report the characteristics of the diffraction behavior of the photorefractive (PR) molecular materials that contains the phenothiazine derivatives. Diphenylhydrazine and malononitrile were reacted with N-alkyl substituted phenothiazinyl aldehyde to provide the charge transporting and nonlinear optical (NLO) chromophore, respectively. The resultant phenothiazine derivatives were employed to fabricate the efficient photorefractive media either without or with 2,4,7-trinitrofluorenone (TNF). The prepared molecular samples can contain the very high NLO chromophore (50-100 wt%). We showed very unusual complementary grating to reduce the hole transport/trap effect from pure photorefractivity and how to control the counter-effect from the electron transport/trap phenomena. Adding the specific molecules to the host PR materials reduced the electron transport effect that is responsible for the complementary grating, thereby causing a dominant contribution of hole transport effect to the grating formation and erasing processes.

Paper Details

Date Published: 5 November 2002
PDF: 8 pages
Proc. SPIE 4802, Organic Photorefractive and Photosensitive Materials for Holographic Applications, (5 November 2002); doi: 10.1117/12.454852
Show Author Affiliations
Dong Hoon Choi, Kyung Hee Univ. (South Korea)
Woong Gi Jun, Kyung Hee Univ. (South Korea)
Kwang Yong Oh, Kyung Hee Univ. (South Korea)

Published in SPIE Proceedings Vol. 4802:
Organic Photorefractive and Photosensitive Materials for Holographic Applications
Klaus Meerholz, Editor(s)

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