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小型化和多功能化是微纳传感器件及其集成系统的主要发展目标.构建无源的自驱动传感器件是实现这一目标的有效途径.利用异质结接触形成的内建电场分离光生电子空穴对从而形成响应电流是实现自驱动光电探测的一种直接有效的方式.在异质结结构的自驱动光电探测器研究中,肖特基型自驱动光电探测器因具有光谱选择性强、响应频率快等特点而备受关注.本文重点介绍了近年来利用低维纳米材料构建的肖特基型自驱动光电探测器,阐释了利用应变/应力、通过界面调控优化器件性能的基本原理,展望了肖特基型自驱动光电探测器发展方向和研究目标.
Miniaturization and multi-functionalization are the main development goals of micro-nano-sensing devices and their integrated systems. Building passive self-driven sensing devices is an effective way to achieve this goal. The built-in electric field formed by heterojunction contact is used to separate photoelectrons Hole pairs to form a response current is a direct and effective way to realize self-driven photodetection.In the self-driven photodetector of heterojunction structure, the Schottky self-driven photodetector has the advantages of strong spectral selectivity , Fast response frequency and other characteristics of much attention.This article focuses on the use of low-dimensional nano-materials in recent years to build a Schottky self-driven photodetector, explained the use of strain / stress, through the interface to optimize the basic principles of device performance The development direction and research goal of Schottky self-driven photodetector are prospected.