澳大利亚西澳大利亚大学电气、电子与计算机工程学院雷文教授学术报告（2019年第5期）

学术报告会（2019年第5期）

应谭劲教授、梁玉军教授的邀请，澳大利亚西澳大利亚大学电气、电子与计算机工程学院雷文教授到我校做学术报告。

报告地点：学海楼109

报告时间：2019年3月8日10:00 -11:00

报告题目：Two-dimensional Bi₂Te₃ nanostructures and their applications in flexible near-infrared sensors

报告人简介：

雷文，男，教授、博士生导师、澳大利亚研究协会(ARC) Future Fellow (等同于中国国家基金委的“杰青”)，以及西澳大利亚大学电子材料与器件实验室主任，目前主要从事半导体红外光电技术、新型半导体纳米光电功能器件、能源转换与存储器件等方面的应用研究。领导、参与并完成了多项澳大利亚、美国、德国和中国的科研项目（近5年来所领导的纵向项目近3 百万澳元，横向应用项目不便列出），并在Applied Physics Reviews, Physical Review Letters, Small, Analytical Chemistry, Nanoscale, Applied Physics Letters等领域内顶级权威期刊上发表论文60多篇，撰写英文专著两部，申请专利两项，并受邀在著名评论期刊Applied Physics Reviews (ISI 影响因子: 14.3) 上发表有关碲镉汞红外光电技术的评论，其成果为国内外同行所广泛关注，其中九篇论文成果为Nature Materials，Virtual Journal of Nanoscale Science and Technology，Journal of Technology and Science 和Verticalnews等期刊选取报道和收录。

报告摘要：

Recently, two-dimensional (2D) materials have attracted significant attention due to their novel physical and chemical properties, and potential applications in microelectronics and optoelectronics devices. Among those 2D materials, bismuth telluride (Bi₂Te₃) presents an interesting candidate material for realizing high performance infrared nanosensors as a result of its favourable bandgap and potential high electron mobility as a result of its topological insulator properties. In this work, we will review our recent effort on studying the controlled growth of 2D Bi₂Te₃ nanostructures, and exploring their applications in flexible near-infrared (NIR) sensors. The flexible NIR sensors based on 2D Bi₂Te₃ nanostructures present excellent device performance in comparison to those reported in literature for other 2D nanomaterial-based NIR sensors, including photoresponsivity, specific detectivity and photoconductive gain. Furthermore, the device performance shows no obvious degradation after bending for a few hundred times, indicating their great flexibility. These findings indicate that 2D Bi₂Te₃ nanostructures present great potential for fabricating high performance flexible NIR sensors.  

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