Ambipolar charge transport in organic p-p junction disclosed by field-effect transistor and diode

被引：6

作者：

Guo, Xinan ^{[1
]}

Hong, Fei ^{[1
]}

Jin, Weipeng ^{[1
]}

Gu, Wen ^{[1
]}

Zhang, Hao ^{[1
]}

Wang, Jun ^{[1
]}

机构：

[1] Shanghai Univ, Minist Educ, Key Lab Adv Display & Syst Applicat, Shanghai 200072, Peoples R China

来源：

ORGANIC ELECTRONICS | 2010年 / 11卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Transistors; Ambipolar charge transport; Capacitance; Electric potential; PHTHALOCYANINE; HETEROJUNCTION;

D O I：

10.1016/j.orgel.2010.02.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Organic p-p junction composed of oxotitanium phthalocyanine (TiOPc) and copper phthalocyanine (CuPc) was investigated by analyzing the corresponding field-effect transistors, which exhibited typical ambipolar transport characteristics. Electrons and holes were induced at two sides of junction interface, respectively, which formed a built-in electric potential of 0.47 V directed from CuPc to TiOPc and resulted in a high conduction deduced by diode measurements. These results implied that both electron and hole current could be accumulated and transported at junction interface determined by the difference of Fermi levels of two materials, which is independent on their conductance types. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：876 / 880

页数：5

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