RT Journal Article
T1 Influence of yttrium doping on the structural, morphological and optical properties of nanostructured ZnO thin films grown by spray pyrolysis
A1 Bazta, Otman
A1 Urbieta Quiroga, Ana Irene
A1 Piqueras De Noriega, Francisco Javier
A1 Fernández Sánchez, Paloma
A1 Addou, Mohammed
A1 Calvino, J. J.
A1 Hungría, A. B.
AB This study reports on the deposition of highly transparent, n-type ZnO thin films on glass substrate at 450 C using spray pyrolysis processing, with the simultaneous insertion of yttrium (Y) at different percentages (0, 2, 5, 7 at%) as a dopant. The effect of Y doping on the structure, morphology and optical properties of Y doped ZnO (ZnO:Y) was investigated for optoelectronic applications. The obtained thin films were characterized by means of X-ray diffraction, field-emission scanning electron microscopy (FESEM), UV visible absorbance measurements, photoluminescence (PL) and cathodoluminescence (CL) spectroscopy. The as-prepared films exhibit well-defined hexagonal wurtzite structure grown along [002]. Field emission scanning electron microscope micrographs of the pure ZnO and ZnO:Y showed that the films acquired a dominance of hexagonal-like grains, the morphology was influenced by Y incorporation. All the films showed high transparency in the visible domain with an average transmittance of 83%. The band gap energy, Eg, increased from 3.12 eV to 3.18 eV by increasing the Y doping concentration up to 5 at% and then decreased to 3.15 eV for 7 at% Y content. The PL and CL measurements reveal a strong ultraviolet (UV) emission, suggesting that the as-prepared ZnO:Y thin films can potentially be used in optoelectronic devices.
PB Elsevier science LTD
SN 0272-8842
YR 2019
FD 2019-04-15
LK https://hdl.handle.net/20.500.14352/13256
UL https://hdl.handle.net/20.500.14352/13256
LA eng
NO ©2019 Elsevier ScienceThis work was supported by MINECO/FEDER (MAT 2016-81118-P and MAT 2015-65274-R). O.B. thanks Aula del Estrecho fellowship.
NO Ministerio de Economía y Competitividad (MINECO)/FEDER
DS Docta Complutense
RD 7 abr 2025