RT info:eu-repo/semantics/article
T1 Influence of metal organic chemical vapour deposition growth conditions on vibrational and luminescent properties of ZnO nanorods
A1 Montenegro, D. N.
A1 Hortelano Santos, Vanesa
A1 Martínez Sacristán, Óscar
A1 Martínez Tomas, M. C
A1 Sallet, V.
A1 Muñoz Sanjosé, V.
A1 Jiménez López, Juan Ignacio
K1 Espectroscopia Raman
K1 Raman Spectroscopy
AB A detailed optical characterization by means of micro Raman and cathodoluminescence spectroscopy of catalyst-free ZnO nanorods grown by atmospheric-metal organic chemical vapour deposition has been carried out. This characterization has allowed correlating the growth conditions, in particular the precursors partial-pressures and growth time, with the optical properties of nanorods. It has been shown that a high Zn supersaturation can favor the incorporation of nonradiative recombination centers, which can tentatively be associated with ZnI-related defects. Characterization of individual nanorods has evidenced that ZnI-related defects have a tendency to accumulate in the tip part of the nanorods, which present dark cathodoluminescence contrast with respect to the nanorods bottom. The effect of a ZnO buffer layer on the properties of the nanorods has been also investigated, showing that the buffer layer improves the luminescence efficiency of the ZnO nanorods, revealing a significant reduction of the concentration of nonradiative recombination centers.
PB AIP Publishing
YR 2013
FD 2013
LK http://uvadoc.uva.es/handle/10324/32428
UL http://uvadoc.uva.es/handle/10324/32428
LA eng
NO Journal of Applied Physics, 2013, 113, 143513
NO Producción Científica
DS UVaDOC
RD 22-nov-2024