2024-03-29T23:06:04Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/324282021-06-23T10:17:48Zcom_10324_1158com_10324_931com_10324_894col_10324_1242
Influence of metal organic chemical vapour deposition growth conditions on vibrational and luminescent properties of ZnO nanorods
Montenegro, D. N.
Hortelano Santos, Vanesa
Martínez Sacristán, Óscar
Martínez Tomas, M. C
Sallet, V.
Muñoz Sanjosé, V.
Jiménez López, Juan Ignacio
Espectroscopia Raman
Raman Spectroscopy
Producción Científica
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.
2018-11-05
2018-11-05
2013
info:eu-repo/semantics/article
Journal of Applied Physics, 2013, 113, 143513
http://uvadoc.uva.es/handle/10324/32428
https://doi.org/10.1063/1.4801534
eng
https://aip.scitation.org/doi/10.1063/1.4801534
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 International
AIP Publishing