A tied Fermi liquid to Luttinger liquid model for nonlinear transport in conducting polymers

Jiawei Wang, Jiebin Niu, Bin Shao, Guanhua Yang, Congyan Lu, Mengmeng Li, Zheng Zhou, Xichen Chuai, Jiezhi Chen, Nianduan Lu, Bing Huang, Yeliang Wang (), Ling Li () and Ming Liu ()
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Jiawei Wang: Chinese Academy of Sciences
Jiebin Niu: Chinese Academy of Sciences
Bin Shao: Shenzhen JL Computational Science and Applied Research Institute
Guanhua Yang: Chinese Academy of Sciences
Congyan Lu: Chinese Academy of Sciences
Mengmeng Li: Chinese Academy of Sciences
Zheng Zhou: Chinese Academy of Sciences
Xichen Chuai: Chinese Academy of Sciences
Jiezhi Chen: Shandong University
Nianduan Lu: Chinese Academy of Sciences
Bing Huang: Beijing Computational Science Research Center
Yeliang Wang: Beijing Institute of Technology
Ling Li: Chinese Academy of Sciences
Ming Liu: Chinese Academy of Sciences

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Organic conjugated polymers demonstrate great potential in transistors, solar cells and light-emitting diodes, whose performances are fundamentally governed by charge transport. However, the morphology–property relationships and the underpinning charge transport mechanisms remain unclear. Particularly, whether the nonlinear charge transport in conducting polymers is appropriately formulated within non-Fermi liquids is not clear. In this work, via varying crystalline degrees of samples, we carry out systematic investigations on the charge transport nonlinearity in conducting polymers. Possible charge carriers’ dimensionality is discussed when varying the molecular chain’s crystalline orders. A heterogeneous-resistive-network (HRN) model is proposed based on the tied-link between Fermi liquids (FL) and Luttinger liquids (LL), related to the high-ordered crystalline zones and weak-coupled amorphous regions, respectively. The HRN model is supported by precise electrical and microstructural characterizations, together with theoretic evaluations, which well describes the nonlinear transport behaviors and provides new insights into the microstructure-correlated charge transport in organic solids.

Date: 2021
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DOI: 10.1038/s41467-020-20238-5

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