Collective Transport for Nonlinear Current-Voltage characteristics of Doped Conducting Polymers

被引：11

作者：

Wang, Jiawei ^{[1
,2
]}

Liu, Dongyang ^{[1
,2
]}

Yu, Lishuai ^{[3
]}

Liu, Feilong ^{[3
]}

Niu, Jiebin ^{[1
]}

Yang, Guanhua ^{[1
]}

Lu, Congyan ^{[1
]}

Lu, Nianduan ^{[1
]}

Li, Ling ^{[1
,2
]}

Liu, Ming ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Key Lab Microelect Devices & Integrated Technol, Inst Microelect, Beijing 100029, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] South China Normal Univ, South China Acad Adv Optoelect, Guangzhou 510006, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 130卷 / 17期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

CHARGE-TRANSPORT; SEMICONDUCTING POLYMERS; PERCOLATION; LIQUID; 2D;

D O I：

10.1103/PhysRevLett.130.177001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Origin of nonlinear transport phenomena in conducting polymers has long been a topic of intense controversies. Most previous knowledge has attributed the macroscopic nonlinear I -V characteristics to individual behaviors of elementary resistors in the network. In this Letter, we show via a systematic dimensionality-dependent transport investigation, that understanding the nonlinear transport in conducting polymers must include the collective transport effect in a percolation network. The possible mediation of percolation threshold pc by controlling the samples' dimensionality unveiled the collective effect in growth of percolation paths driven by electric field, enabling us to draw a smooth connection between two typically observed nonlinear phenomena, dissipative tunnelinglike and threshold-limited transport, which have been controversial for years. The possible microscopic origins of the collective transport are discussed within the Coulomb blockade theory.

引用

页数：6

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