The Influence of Chromophores on the Magnitude of Space-Charge Fields in Photorefractive Polymeric Composites

In Kyu Moon; Do Young Kim; Nakjoong Kim

doi:10.1071/CH09107

RESEARCH ARTICLE

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The Influence of Chromophores on the Magnitude of Space-Charge Fields in Photorefractive Polymeric Composites

In Kyu Moon ^A ^C , Do Young Kim ^B and Nakjoong Kim ^B ^C

+ Author Affiliations

- Author Affiliations

^A Department of Chemistry, Sungkyunkwan University, 300 Cheoncheon-Dong, Jangan-Gu, Suwon, Gyeonggi-Do 440-746, South Korea.

^B Department of Chemistry, Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul 133-791, South Korea.

^C Corresponding authors. Email: inkmoon@naver.com; njkim@hanyang.ac.kr

Australian Journal of Chemistry 62(12) 1655-1660 https://doi.org/10.1071/CH09107
Submitted: 22 February 2009 Accepted: 27 March 2009 Published: 10 December 2009

Abstract

This paper reports on the characterization of three poly(N-vinylcarbazole) (PVK)-based photorefractive composites with different non-linear optical (NLO) chromophores at an operating wavelength of 632.8 nm. The strength of the photoconductivity and the magnitude of the space-charge field (E _SC) in the photorefractive composites are strongly affected by the chromophore’s highest occupied molecular orbital (HOMO). The magnitude of E _SC increased with the lowering of the HOMO level of the NLO chromophores in the PVK composites.

Acknowledgements

The present work was supported by the Korea Science and Engineering Foundation (KOSEF) of the Korea government (MEST) (No. R11-2007-050-01003-0) and the Research Fund of Hanyang University (HYU-2008-T).

References

The Influence of Chromophores on the Magnitude of Space-Charge Fields in Photorefractive Polymeric Composites

Abstract

Acknowledgements

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