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Properties of Al- and Ga-doped thin zinc oxide films treated with UV laser radiation

Samavati, Alireza and Samavati, Zahra and Ismail, A. F. and Othman, M. H. D. and A. Rahman, Mukhlis and Zulhairun, A. K. and Amiri, I. S. (2018) Properties of Al- and Ga-doped thin zinc oxide films treated with UV laser radiation. Applied Physics A: Materials Science and Processing, 124 (3). p. 223. ISSN 0947-8396

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Official URL: http://dx.doi.org/10.1007/s00339-018-1619-0


This paper reports the Nd:YAG laser irradiation treated modified properties of aluminum (Al) and gallium (Ga) co-doped zinc oxide (ZnO) (AGZO) films prepared on Si-substrate via combined sol–gel and spin-coating method. The impact of varying laser energy (150–200 mJ) on the structure, morphology, electrical and optical properties of such AGZO films were determined. Laser-treated samples were characterized using various analytical tools. Present techniques could achieve a high-quality polycrystalline films compared with those produced via conventional high temperature processing. AGZO films irradiated with third harmonics UV radiation (355 nm) from Nd:YAG laser source revealed very low resistivity of 4.02 × 10− 3 Ω cm. The structural properties grain size was calculated firm the X-ray diffraction spectra using the Scherrer equation that increased from 12.7 to 22.5 nm as the annealing laser energy increased from (150–200) mJ. The differences in crystallinity and orientation are explained in terms of the thermal effect caused by laser irradiation. (FESEM) images have been demonstrated that Nd:YAG laser annealing can significantly improve the crystallinity level, densification, and surface flatness of sol–gel derived AGZO thin films that occurred as a result of laser processing. Synthesized AGZO films displayed favorable growth orientation along (101) lattice direction. AGZO films with energy band gap of 3.37–3.41 eV were obtained. Results on the crystallinity, surface morphology, roughness, bonding vibration, absorption, photoluminescence, and resistivity of the laser-irradiated films were analyzed and discussed.

Item Type:Article
Uncontrolled Keywords:Laser-treated, films
Subjects:Q Science > QC Physics
ID Code:86124
Deposited By: Widya Wahid
Deposited On:30 Aug 2020 08:56
Last Modified:30 Aug 2020 08:56

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