Study on trap states in polyvinylcarbazole by thermally stimulated current spectrum

Lijuan He; Ximing Wang; Wenlong Zhang; Xuan Wang

doi:10.1117/12.725715

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5 March 2007 Study on trap states in polyvinylcarbazole by thermally stimulated current spectrum

Lijuan He, Ximing Wang, Wenlong Zhang, Xuan Wang

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Proceedings Volume 6595, Fundamental Problems of Optoelectronics and Microelectronics III; 65950U (2007) https://doi.org/10.1117/12.725715
Event: Fundamental Problems of Optoelectronics and Microelectronics III, 2006, Harbin, China

Abstract

The carrier traps and process of charge trapping play a vital role of the Photorefractive effect (PR-effect), yet no systematic attempt has been made to understand them in photorefractive polymers, In this paper, the measurement of thermally stimulated current (TSC) spectrum and the analysis of it were completed in polyvinylcarbazole (PVK). The trap states in PVK were characterized by the TSC spectrum, Some parameters, Such as depth, density and distribution of traps were obtained, The result showed that there were 0.53∼1.0eV continuous distribution traps in PVK, and the distribution was similar to Gauss law with a 0.77eV maximum. These data can provide a reference to the deeper investigations of nature and mechanism for photorefractive polymers based on PVK.

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Lijuan He, Ximing Wang, Wenlong Zhang, and Xuan Wang "Study on trap states in polyvinylcarbazole by thermally stimulated current spectrum", Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 65950U (5 March 2007); https://doi.org/10.1117/12.725715

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