Abstract

As an excellent optical device, photodetectors have many important applications, such as communication technology, display technology, scientific measurement, fire monitoring, aerospace and biomedical research, and it’s of great significance in the research of nanotechnology and optoelectronics. Graphene, as the first two-dimensional (2D) single-element nanomaterial, has the advantages of high carrier mobility, high strength, high light transmittance and excellent thermal conductivity, and it’s widely used in various nano-optical devices. The great success of graphene has led scientists to extensive research on other 2D single-element nanomaterials. Recently, a group of novel 2D single-element nanomaterials have attracted a lot of attention from scientists because of its excellent physical, chemical, electronic, mechanical and optical properties. Furthermore, it has opened a new door for the realization of new and efficient photodetectors. The group of 2D single-element nanomaterials are called 2D-Xenes and used to make high-performance photodetectors. Currently, there are few studies on photodetectors based on 2D-Xenes, but some 2D-Xenes have been applied to photodetectors and reported. Some of these have excellent photodetection performance, such as high photoresponsivity (R), broad spectral response range, fast photoresponse speed and high specific detectivity (D*). Based on the novel 2D-Xenes, this review explores the types and preparation methods of 2D-Xenes, and the working mechanisms of 2D-Xenes photodetectors. Finally, the challenges and development trends of 2D-Xenes in the future are discussed. The research of 2D-Xenes is of great significance for the development of high-performance photodetectors in the future, and is expected to be widely used in other nanoelectronics and optical devices.

中文翻译：

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基于超越石墨烯的新兴2D-Xene的宽带光电探测器的最新进展和前景

摘要

光电探测器作为一种优良的光学器件，在通信技术，显示技术，科学测量，火灾监测，航空航天和生物医学研究等领域具有许多重要的应用，在纳米技术和光电子学的研究中具有重要的意义。石墨烯作为第一个二维（2D）单元素纳米材料，具有高载流子迁移率，高强度，高透光率和优异的导热性的优点，被广泛用于各种纳米光学器件中。石墨烯的巨大成功使科学家们对其他2D单元素纳米材料进行了广泛的研究。最近，一组新颖的二维单元素纳米材料因其出色的物理，化学，电子，机械和光学特性而吸引了科学家的广泛关注。此外，它为实现新型高效光电探测器打开了新的大门。2D单元素纳米材料组称为2D-Xenes，用于制造高性能光电探测器。当前，关于基于2D-Xenes的光电检测器的研究很少，但是一些2D-Xenes已经应用于光电检测器并得到了报道。其中一些具有出色的光电检测性能，例如高光响应性（R），宽光谱响应范围，快速的光响应速度和高比检测率（D *）。本文以新型的2D-Xenes为基础，探讨了2D-Xenes的类型和制备方法，以及2D-Xenes光电探测器的工作机理。最后，讨论了2D-Xenes未来的挑战和发展趋势。2D-Xenes的研究对于未来高性能光电探测器的发展具有重要意义，并有望广泛用于其他纳米电子和光学器件中。