Fast-Response Photodetector Based on Hybrid Bi₂Te₃/PbS Colloidal Quantum Dots.

ABSTRACT: Colloidal quantum dots (CQDs) as photodetector materials have attracted much attention in recent years due to their tunable energy bands, low cost, and solution processability. However, their intrinsically low carrier mobility and three-dimensional (3D) confinement of charges are unsuitable for use in fast-response and highly sensitive photodetectors, hence greatly restricting their application in many fields. Currently, 3D topological insulators, such as bismuth telluride (Bi₂Te₃), have been employed in high-speed broadband photodetectors due to their narrow bulk bandgap, high carrier mobility, and strong light absorption. In this work, the advantages of topological insulators and CQDs were realized by developing a hybrid Bi₂Te₃/PbS CQDs photode

SUBMITTER: Yu L 

PROVIDER: S-EPMC9506398 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature