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Open Access Nano Perspectives

Cu-Doping Effects in CdI2Nanocrystals: The Role of Cu-Agglomerates

M Idrish Miah

Author Affiliations

Nanoscale Science and Technology Centre, Griffith University, Nathan, Brisbane, QLD, 4111, Australia

School of Biomolecular and Physical Sciences, Griffith University, Nathan, Brisbane, QLD, 4111, Australia

Department of Physics, University of Chittagong, Chittagong, 4331, Bangladesh

Nanoscale Research Letters 2008, 4:187-190  doi:10.1007/s11671-008-9215-4

Published: 22 November 2008

Abstract

Cu-doping effects in CdI2nanocrystals are studied experimentally. We use the photostimulated second harmonic generation (PSSHG) as a tool to investigate the effects. It is found that the PSSHG increases with increasing Cu content up to 0.6% and then decreases due to the formation of the Cu-agglomerates. The PSSHG for the crystal with Cu content higher than 1% reduces to that for the undoped CdI2crystal. The results suggest that a crucial role of the Cu-metallic agglomerates is involved in the processes as responsible for the observed effects.

Keywords:
Nanocrystals; Defects; Surface properties; Electron–phonon interaction