Ultrafast photoluminescence spectroscopy of H- and O-terminated nanocrystalline diamond films

Abstract

We use femtosecond photoluminescence spectroscopy to study the light-induced changes in the sub-gap energy states of nanocrystalline diamond samples prepared on a fused silica substrate by MPECVD technique. Based on our results we propose a model of surface and sub-surface structure of nanodiamond films.

Keywords

• Nanocrystalline diamond
• photoluminescence
• surface
• ultrafast spectroscopy