Frequency-Dependent Electrical Transport Properties of 4, 4 ', 4 ''-Tri(N-carbazolyl)-Triphenylamine Investigated by Impedance Spectroscopy

doi:10.1088/0256-307X/28/5/057201

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	Frequency-Dependent Electrical Transport Properties of 4, 4 ', 4 ''-Tri(N-carbazolyl)-Triphenylamine Investigated by Impedance Spectroscopy
	Li Bi-Xin 1,2; Chen Jiang-Shan 1; Zhao Yong-Biao 1; Ma Dong-Ge 1
刊名	CHINESE PHYSICS LETTERS
	2011-05-01
卷号	28 期号:5
ISSN号	0256-307X
DOI	10.1088/0256-307X/28/5/057201
英文摘要	Frequency-dependent electrical transport properties of 4, 4', 4''-tri(N-carbazolyl)-triphenylamine (TCTA) are analyzed by impedance spectroscopy (IS) as functions of bias and temperature. The Cole-Cole plot shows a single semicircle which indicates that the equivalent circuit can be designed as a single parallel resistor R(p) and capacitor C(p) network with a series resistance R(s) The bulk capacitance C(p) remains unchanged while the resistance R(p) decreases along with bias voltage. Conduction mechanism matches well with the space-charge-limited current (SCLC) model with exponential trap charge distributions. The temperature-dependent impedance studies reveal the activation energy of 0.246 eV with no phase change in the temperature range 220-320 K. These results indicate that the IS method is applicable for organic semiconductors having a wide band gap.
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000290452000057
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/73639]
专题	中国科学院化学研究所
通讯作者	Ma Dong-Ge
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li Bi-Xin,Chen Jiang-Shan,Zhao Yong-Biao,et al. Frequency-Dependent Electrical Transport Properties of 4, 4 ', 4 ''-Tri(N-carbazolyl)-Triphenylamine Investigated by Impedance Spectroscopy[J]. CHINESE PHYSICS LETTERS,2011,28(5).
APA	Li Bi-Xin,Chen Jiang-Shan,Zhao Yong-Biao,&Ma Dong-Ge.(2011).Frequency-Dependent Electrical Transport Properties of 4, 4 ', 4 ''-Tri(N-carbazolyl)-Triphenylamine Investigated by Impedance Spectroscopy.CHINESE PHYSICS LETTERS,28(5).
MLA	Li Bi-Xin,et al."Frequency-Dependent Electrical Transport Properties of 4, 4 ', 4 ''-Tri(N-carbazolyl)-Triphenylamine Investigated by Impedance Spectroscopy".CHINESE PHYSICS LETTERS 28.5(2011).