2026-04-27T13:47:11Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/324282025-03-26T19:10:04Zcom_10324_1158com_10324_931com_10324_894col_10324_1242

Montenegro, D. N. Hortelano Santos, Vanesa Martínez Sacristán, Óscar Martínez Tomas, M. C Sallet, V. Muñoz Sanjosé, V. Jiménez López, Juan Ignacio 2018-11-05T11:39:52Z 2018-11-05T11:39:52Z 2013 Journal of Applied Physics, 2013, 113, 143513 http://uvadoc.uva.es/handle/10324/32428 10.1063/1.4801534 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. Ministerio de Ciencia e Innovación (Projects MAT2007-66129, MAT-2010-20441-C02, MAT-2010-16116, and TEC2011-28076-C02-02) Generalitat Valenciana (Prometeo/2011-035 and ISIC/2012/008, Institute of Nanotechnologies for Clean Energies) application/pdf eng AIP Publishing info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 International Espectroscopia Raman Raman Spectroscopy Influence of metal organic chemical vapour deposition growth conditions on vibrational and luminescent properties of ZnO nanorods info:eu-repo/semantics/article https://aip.scitation.org/doi/10.1063/1.4801534 SI