Quantum confinement effect in diamond nanocrystals studied by X-ray-absorption spectroscopy
Journal
Physical Review Letters
Journal Volume
82
Journal Issue
26
Pages
5377-5380
Date Issued
1999
Author(s)
Chang, Y. K.
Hsieh, H. H.
Pong, W. F.
Tsai, M. H.
Chien, F. Z.
Tseng, P. K.
Chen, L. C.
Wang, T. Y.
Chen, K. H.
Bhusari, D. M.
Yang, J. R.
Abstract
This study measures the x-ray-absorption spectra of a series of nanodiamond thin films with grain diameters ranging from 3.5 nm to 5 μm at the C K-edge using the sample drain current mode at room temperature. Resonance peaks resembling the C 1s core exciton are observed. The exciton state and conduction band edge are found to shift to higher energies with the decrease of the grain size indicative of the presence of the quantum confinement effect. © 1999 The American Physical Society.
SDGs
Type
journal article