On-demand synthesis of high-quality, blue-light-active ZnSe colloidal quantum wires.

ABSTRACT: Beyond the state-of-the-art Cd-containing quantum wires (QWs), heavy-metal-free semiconductor QWs, such as ZnSe, are of great interest for next-generation environmental-benign applications. Unfortunately, simultaneous, on-demand manipulation of their radial and axial sizes-that allows strong quantum confinement in the blue-light region-has so far been challenging. Here we present a two-step catalyzed growth strategy that enables independent, high-precision and wide-range controls over the diameter and length of ZnSe QWs. We find that a new epitaxial orientation between the cubic-phase Ag₂Se solid catalyst and wurtzite ZnSe QWs kinetically favors the formation of defect-free ultrathin QWs. Thanks to their high uniformity, the resulting blue-light-active, phase-pure ZnSe QWs exhib

SUBMITTER: Li Y 

PROVIDER: S-EPMC9671665 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature