Influence of High Pressure on the Photoluminescence of CdSe/CdZnS Core/Shell Nanoplatelets
ORAL
Abstract
Colloidal nanoplatelets are promising materials with tunable narrow emission bands and large photoluminescence quantum yields. In this work we utilize high hydrostatic pressure to investigate the effects of lattice strain on the optical properties of CdSe/CdZnS core/shell nanoplatelets. This work incorporates experimental photoluminescence spectra measured in a diamond anvil cell at high hydrostatic pressure as well as comparison with theoretical models and density functional theory to investigate strain dependent bandgap shifts in colloidal nanoplatelets. This modeling allows for insight into how band structure, confinement, electrostatic effects alter the measured photoluminescence spectra.
*Support from the National Science Foundation through the AMO Physics Frontier Center at JILA under Grant Number PHY-2317149 is gratefully acknowledged by J.M.W. Compuational resources from the University of Colorado Boulder Research Computing Group were also utilized in this work, which is supported by the National Science Foundation (awards ACI-1532235 and ACI-1532236), the University of Colorado Boulder, and Colorado State University. R.L. was supported by a National Nuclear Security Administration Stewardship Science Graduate Fellowship under the cooperative agreement DE-NA0003960. P.M., Z.C. and A.A. acknowledge support from the ARC Centre of Excellence in Exciton Science through ARC Grant CE170100026.
–
Publication: Leversee R, Chen Z, Ashokan A, Mulvaney P, WEBER JM. Optical Properties of CdSe/CdZnS Core/Shell Nanoplatelets at High Pressure. ChemRxiv. 2025; doi:10.26434/chemrxiv-2025-pxp3j This content is a preprint and has not been peer-reviewed.
Presenters
-
River Leversee
- University of Colorado, Boulder