Optically Controllable 2D Material/Complex Oxide Heterointerface.

ABSTRACT: Heterostructures play a vital role in functional devices on the basis of the individual constituents. Non-conventional heterostructures formed by stacking 2D materials onto structurally distinct materials are of great interest in achieving novel phenomena that are both scientifically and technologically relevant. Here, a heterostructure based on a 2D (molybdenum ditelluride) MoTe₂ and an amorphous strontium titanium oxide (a-STO) thin film is reported. The heterostructure functions as a high-performance photodetector, which exhibits anomalous negative photoresponse in the pristine device due to the scattering effect from the light-induced O^δ- ions. The photoresponsivity and the specific detectivity are found to be >10⁴ AW^-1 and >10¹³ J

SUBMITTER: Liu T 

PROVIDER: S-EPMC7610330 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature