A versatile photodetector assisted by photovoltaic and bolometric effects.

ABSTRACT: The advent of low-dimensional materials with peculiar structure and superb band properties provides a new canonical form for the development of photodetectors. However, the limited exploitation of basic properties makes it difficult for devices to stand out. Here, we demonstrate a hybrid heterostructure with ultrathin vanadium dioxide film and molybdenum ditelluride nanoflake. Vanadium dioxide is a classical semiconductor with a narrow bandgap, a high temperature coefficient of resistance, and phase transformation. Molybdenum ditelluride, a typical two-dimensional material, is often used to construct optoelectronic devices. The heterostructure can realize three different functional modes: (i) the p-n junction exhibits ultrasensitive detection (450 nm-2 μm) with a dark current down to 0.2 p

SUBMITTER: Jiang W 

PROVIDER: S-EPMC7484767 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature