Solution-processed doping and undoping zinc-oxide and copper-oxide thin films

Nguyen, Van Dung and Nguyen, Quang Hoa and Tran, Van Dung and Bui, Nguyen Quoc Trinh (2017) Solution-processed doping and undoping zinc-oxide and copper-oxide thin films. In: International Thin Films Conference (TACT), 15-18 October 2017, Hualien, Taiwan.

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Abstract

Zinc-oxide (ZnO) and copper-oxide (CuO) based thin films have attracted a huge attention owing to controllable electrical conductivity and low-cost materials for manufacturing electronic and photonic devices. In this work, we have characterized on physical properties of undoped and doped (ex.: Ag, Al) ZnO and CuO thin films, prepared by using a solution process. For formation of precursor solution, zinc/copper nitrate hexahydrate (original or doping), water and citric acid were used as metal salt, solvent and stabilizer, respectively. After that, using the precursors mixed, ZnO/CuO thin films were spin-coated on glass substrates followed by an annealing process below 550oC. Structural, morphological, optical and electrical properties of the thin films were, in turn, evaluated by using X-ray diffraction, scanning electronic microscopy, UV-vis, and four-probe measurement systems. Achievement results show that, when annealing temperatures increased from 450°C to 550°C, the thin films were oriented more preferentially along (100) (002) and (102) directions. ZnO based thin films were relatively porous, and whose band-gap energy was closed to 3.2 eV. In addition, characterization on CuO thin films will be discussed in this conference.

Item Type:	Conference or Workshop Item (Poster)
Subjects:	Engineering Physics
Divisions:	Faculty of Engineering Physics and Nanotechnology (FEPN)
Depositing User:	Dr. Bui Nguyen Quoc Trinh
Date Deposited:	09 Nov 2017 03:23
Last Modified:	09 Nov 2017 03:23
URI:	http://eprints.uet.vnu.edu.vn/eprints/id/eprint/2626

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