Characterization of temperature-dependent carrier transport in disordered indium-tin-oxide/poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate)/ polyfluorene/Ca/Al polymer structures

Joe Air Jiang, Jen Cheng Wang, Chia Hui Fang, Ya Fen Wu, Jen Wei Teng, Yu Ting Chen, Ping Lin Fan, Tzer En Nee*

*此作品的通信作者

研究成果: 期刊稿件文章同行評審

1 引文 斯高帕斯(Scopus)

摘要

The temperature-dependent electrical characteristics of polyfluorene-based polymer structures over a temperature range from 200 to 300 K are systematically investigated in this study. Initially, using the definitions of the Berthelot-type model, it is found that the sample exhibits a higher Berthelot-type temperature TB with high driving voltage, indicating that carrier transport in a disordered system manifests Berthelot-type behaviors. The ideal current density-voltage curve for the polymer structures given the carrier transmit mechanism is further elucidated by taking into account the ohmic conduction, trap charge limited current, and Mott and Gurney model of space charge limited current. The proposed procedure is simple and can be used to characterize the material with reasonable accuracy. We also study the density of the traps Ht, and the characteristic energy of the distribution Et to better understand the carrier-transport process in organic materials and structures.

原文英語
頁(從 - 到)4148-4151
頁數4
期刊Thin Solid Films
519
發行號13
DOIs
出版狀態已出版 - 29 04 2011

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