Effect of Hydrostatic Pressure on the Photoluminescence of CdSe/CdZnS Core/Shell Nanoplatelets

Colloidal CdSe nanoplatelets are promising materials with tunable narrow emission bands and large photoluminescence quantum yields. In this work we investigate the effects of high hydrostatic pressure on the optical properties of CdSe/CdZnS core/shell nanoplatelets. This work incorporates experimental photoluminescence spectra measured in a diamond anvil cell with hydrostatic pressures up to ~6 GPa, as well as comparison with theoretical models and density functional theory to investigate the phenomena that determine the pressure dependent bandgap shifts in colloidal nanoplatelets.