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oai:docta.ucm.es:20.500.14352/1336322026-03-03T01:01:27Zcom_20.500.14352_14col_20.500.14352_15

Tuning optical and electrical properties of zinc oxide PLD films: effect of temperature and air annealing Ramos Justicia, Juan Francisco Sotillo Buzarra, Belén Urbieta Quiroga, Ana Irene Gonzalo, J. Fernández Sánchez, Paloma 620.1 Pulsed-Laser deposition ZNO thin-films Growth Photoluminiscence Física de materiales 3312 Tecnología de Materiales 2025 Acuerdos transformativos CRUE-CSIC © 2025 The Authors Programa de ayudas de Contratos Predoctorales CT15/23 The effect of substrate temperature and post-deposition thermal annealing on the optical and electrical properties of ZnO thin films grown by pulsed laser deposition are studied. XRD analysis reveals a (002) orientation and stress relaxation with increasing growth temperature. AFM shows a granular surface topography, whose grains become larger after annealing. Competition of coalescence and recrystallisation mechanisms is proposed to explain these results. Optical transmission experiments reveal changes in the relative intensity of the defect bands in the visible region, caused by changes in the population of intrinsic defects. Electrical measurements find that room-temperature grown films are p-type, while higher-temperature deposited films are n-type, and all become p-type after annealing. Low-temperature measurements reveal a switch in the conductivity type from p-to n-type around 220–250 K depending on the samples, which is explained due to competing defect-related conduction mechanisms. European Commission Ministerio de Ciencia e Innovación (España) Agencia Estatal de Investigación (España) Universidad Complutense de Madrid Banco Santander Depto. de Física de Materiales Fac. de Ciencias Físicas TRUE pub 2026-03-02T11:05:43Z 2026-03-02T11:05:43Z 2026-01 journal article VoR https://hdl.handle.net/20.500.14352/133632 0272-8842 10.1016/j.ceramint.2025.11.418 1873-3956 eng info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2024-2027/PID2024-156974OB-C21/ES/NANOESTRUCTURAS Y METASUPERFICIES SOSTENIBLES INDUCIDAS POR LASER PARA FOTONICA Y FOTOVOLTAICA AVANZADAS PR3/23–30813 J.F. Ramos-Justicia, B. Sotillo, A. Urbieta, J. Gonzalo, P. Fernández, Tuning optical and electrical properties of zinc oxide PLD films: effect of temperature and air annealing, Ceramics International 52 (2026) 1132–1140. https://doi.org/10.1016/j.ceramint.2025.11.418. Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ open access application/pdf Elsevier