Publication Type
Journal
Journal Name
ACS Applied Materials & Interfaces
Publication Date
Page Numbers
1458 to 1464
Volume
7
Issue
3
Abstract
In this Communication, we report a novel singlelayer sheet of ZnSe, with a three-atomic thickness, which demonstrates a strong quantum confinement effect by exhibiting a large blue shift of 2.0 eV in its absorption edge relative to the zinc blende (ZB) bulk phase. Theoretical optical absorbance shows
that the largest absorption of this ultrathin single-layer sheet of ZnSe occurs at a wavelength similar to its four-atom-thick doublelayer counterpart but with higher photoabsorption efficiency, suggesting a superior behavior on incident photon-to-current conversion efficiency for solar water splitting, among other potential
applications. The results presented herein for ZnSe may be generalized to other group II-VI analogues.
