Monocopper Doping in Cd-In‑S Supertetrahedral Nanocluster via Two-Step Strategy and Enhanced Photoelectric Response

We apply a two-step strategy to realize
ordered distribution of
multiple components in one nanocluster (NC) with a crystallographically
ordered core/shell structure. A coreless supertetrahedral chalco­gen­ide
Cd-In-S cluster is prepared, and then a copper ion is inserted at
its void core site through a diffusion process to form a Cu-Cd-In-S
quaternary NC. This intriguing molecular cluster with mono-copper
core and Cd-In shell exhibits enhanced visible-light-responsive optical
and photoelectric properties compared to the parent NC.