Enabling metallic behaviour in two-dimensional superlattice of semiconductor colloidal quantum dots.

ABSTRACT: Semiconducting colloidal quantum dots and their assemblies exhibit superior optical properties owing to the quantum confinement effect. Thus, they are attracting tremendous interest from fundamental research to commercial applications. However, the electrical conducting properties remain detrimental predominantly due to the orientational disorder of quantum dots in the assembly. Here we report high conductivity and the consequent metallic behaviour of semiconducting colloidal quantum dots of lead sulphide. Precise facet orientation control to forming highly-ordered quasi-2-dimensional epitaxially-connected quantum dot superlattices is vital for high conductivity. The intrinsically high mobility over 10 cm² V^-1 s^-1 and temperature-independent behaviour prove

SUBMITTER: Septianto RD 

PROVIDER: S-EPMC10220219 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature