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Understanding electronic transport in multi-component amorphous semiconductors

  • S.I. : Visvesvaraya
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Abstract

Amorphous semiconductors are an important class of semiconductors due to their low temperature deposition and high areal homogeneity over large areas which have been used mainly for display back panel driving circuits. Recent improvements in carrier mobilities in multi-component amorphous semiconductors have opened new area of applications for these amorphous semiconductors. To develop new multi component amorphous structures with optimized electronic properties, it is essential to understand the electron transport behavior in these materials. We have compared electronic structure of amorphous oxide and amorphous oxy-nitride semiconductors to understand the electronic transport in these semiconductors. We also propose certain methods to significantly reduce the computational time required to generate new multi-component amorphous structures and to study their electronic properties such that the development of new amorphous semiconductors with optimized electronic properties can be accelerated.

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Acknowledgements

Authors would like to acknowledge earlier work of Mr. Suhas Nahas towards effective use of evolutionary algorithm in generating amorphous structures some of which were used for further studies in this work. Authors also acknowledge computational support from Prof. Somnath Bhowmick for the generation of amorphous structures and discussions leading towards better understanding of computational methods. Authors acknowledge use of high performance computing (HPC) facility of IIT Kanpur for ab-initio based DFT calculations. Anshu Gaur would like to thankfully acknowledge support under YFRF Grant from MietY, GoI.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, UP, 208016, India

    Juhi Srivastava & Anshu Gaur

  2. Samtel Centre for Display Technologies, Indian Institute of Technology Kanpur, Kanpur, UP, 208016, India

    Juhi Srivastava & Anshu Gaur

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  1. Juhi Srivastava
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  2. Anshu Gaur
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Correspondence to Anshu Gaur.

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Anshu Gaur: YFRF Grant of Visvesvaraya Ph.D. Program under Digital India Corporation of Ministry of Electronics and Information Technology, Govt. of India.

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Srivastava, J., Gaur, A. Understanding electronic transport in multi-component amorphous semiconductors. CSIT 7, 123–129 (2019). https://doi.org/10.1007/s40012-019-00246-7

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