Synthesis, Characterization and Electrical Properties of a Composite of Topological Insulating Material: Bi2Te3-PANI

Procedia Materials Science Pub Date : 2015-01-01 DOI:10.1016/j.mspro.2015.06.042

R.R. Urkude , P.T. Patil , S.B. Kondawar , U.A. Palikundwar

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引用次数: 6

Abstract

In the present work, we carried out a systematic study of structure, UV-Vis Spectra and surface conductivity of pure Bi₂Te₃, pure Polyaniline (PANI) and Bi₂Te₃ (5%)-PANI (95%) composite. Bi₂Te₃ was synthesized by a method similar to solvothermal method, whereas, pure PANI and Bi₂Te₃-PANI composite were synthesized by a chemical oxidative method. The materials were structurally characterized and the electrical properties were investigated in the temperature range from room temperature to 100 °C. The electrical conductivity of the Bi₂Te₃-PANI composite is found to be higher than that of its pure constituents at all the temperatures. The enhancement in the surface conductivity may be due to the PANI generated ordered molecular arrangement of Bi₂Te₃ in the Bi₂Te₃-PANI composite, as confirmed from powder x-ray diffraction, UV–vis spectral analysis.

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拓扑绝缘材料Bi2Te3-PANI☆的合成、表征及电性能

本文对纯Bi2Te3、纯聚苯胺(PANI)和Bi2Te3 (5%)-PANI(95%)复合材料的结构、紫外可见光谱和表面电导率进行了系统的研究。Bi2Te3是用类似溶剂热法合成的，而纯聚苯胺和Bi2Te3-聚苯胺是用化学氧化法合成的。在室温至100℃的温度范围内对材料进行了结构表征和电学性能研究。在所有温度下，Bi2Te3-PANI复合材料的电导率都高于其纯组分。粉末x射线衍射和紫外可见光谱分析证实，表面电导率的增强可能是由于聚苯胺生成的Bi2Te3-聚苯胺复合材料中Bi2Te3的有序分子排列。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Procedia Materials Science

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