RT Journal Article
T1 Cathodoluminescence microscopy of hydrothermal and flux grown ZnO single crystals
A1 Urbieta Quiroga, Ana Irene
A1 Fernández Sánchez, Paloma
A1 Piqueras De Noriega, Francisco Javier
A1 Hardalov, C.
A1 Sekiguchi, T.
AB Bulk ZnO single crystals grown by the hydrothermal and flux methods have been characterized by steady-state and time resolved cathodoluminescence measurements performed on the different crystalline faces. A shift of the peak near band edge towards lower energies is observed in spectra recorded with increasing delay times. This behaviour is often observed in the etch pit regions in alkali flux grown crystals, which suggests the presence of a band related to dislocations or to the point defects surrounding the dislocations. In the low-energy region, cathodoluminescence spectra show that the relative intensity of the different components of the deep level band also depends on the atomic structure of the face under study. This complex behaviour is clearly revealed from the time resolved spectra. The differences observed are attributed to the nature of the defects present in each face and, in particular, to different impurity incorporation processes that could be mainly controlled by the atomic configuration and polarity of the planes.
PB IOP Publishing LTD
SN 0022-3727
YR 2001
FD 2001-10-07
LK https://hdl.handle.net/20.500.14352/59120
UL https://hdl.handle.net/20.500.14352/59120
LA eng
NO © 2001 IOP Publishing Ltd.This work was supported by MCYT-DGI (Project MAT2000-2119). Ch Hardalov thanks U Complutense for a Sabbatical grant. Thanks are due to Professor N Sakagami (Akita National College of Technology, Japan) and Professor S Miyashita (Toyama Medical and Pharmaceutical University, Japan) for their contribution to crystal preparation
NO MCYT-DGI
DS Docta Complutense
RD 6 abr 2025