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Proceedings Paper

Electrostatic modification of ZnSe/polymer interface in polymer-nematogen composite and its impact on photorefractive hologram
Author(s): Jingwen Zhang; Jiayin Fu; Guangwei Hu; Hua Zhao
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Paper Abstract

With submicrometer thick photoconducting, semiconductor ZnSe thin films as interlayers between ITO glass and thin film of C60 doped mixture of polymer poly[N-vinylcarbazole] (PVK) and nematic liquid crystal (LC) 4,4’-npentylcyanobiphenyl (5CB), an updatable holographic recording medium was fabricated. When two laser beams were overlapped in the holographic recording medium, 2D diffraction patterns were seen, along with several interesting observations. The frequent sign changing of energy transferring between the two transmitted laser beams and large dynamic change in different diffraction orders implied complex processes of electric charge generation, transportation and compensation in the interfaces and within composite polymer film. Electrostatic modification based surface grating formation was proposed to explain all the findings.

Paper Details

Date Published: 5 September 2015
PDF: 6 pages
Proc. SPIE 9564, Light Manipulating Organic Materials and Devices II, 95640R (5 September 2015); doi: 10.1117/12.2187196
Show Author Affiliations
Jingwen Zhang, Harbin Institute of Technology (China)
Key Lab. of Micro-Optics and Photonics Technology of Heilongjiang Province (China)
Jiayin Fu, Harbin Institute of Technology (China)
Key Lab. of Micro-Optics and Photonics Technology of Heilongjiang Province (China)
Guangwei Hu, Harbin Institute of Technology (China)
Key Lab. of Micro-Optics and Photonics Technology of Heilongjiang Province (China)
Hua Zhao, Harbin Institute of Technology (China)
Key Lab. of Micro-Optics and Photonics Technology of Heilongjiang Province (China)


Published in SPIE Proceedings Vol. 9564:
Light Manipulating Organic Materials and Devices II
Jon A. Schuller, Editor(s)

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