Tuning Electrical and Optical Properties of SnO2 Films: Influence of Sb Dopant Concentration and Coating Layer in Spin-Coating Process

Main Article Content

Thanaphon Kansaard
Jitpisoot Sawangjaeng
Kanokthip Boonyarattanakalin
Chakkaphan Wattanawikkam
Russameeruk Noonuruk

Abstract

This study investigates the optical and electrical properties of antimony (Sb)-doped tin oxide (SnO2), commonly referred to as ATO, transparent conducting thin films synthesized via a wet chemical route. The films were fabricated using a sol-gel method combined with spin-coating. The effects of Sb doping concentrations (1, 3, and 5 mol%) and the number of coating layers (5 and 10) on the films' properties were systematically examined. ATO films were deposited onto glass substrates at a constant spin speed of 2000 rpm, followed by calcination at 600 °C for 2 hours. X-ray diffraction (XRD) analysis confirmed the formation of a tetragonal SnO2structure with no secondary phases. Optical measurements revealed high transparency in the visible range, with transmittance values between 60% and 80%. The lowest resistivity of 0.16 Ω·m was achieved with 5 mol% Sb and 10 coating layers, which also corresponded to the highest carrier concentration of 2 × 109 cm-3, as determined by Hall effect measurements. These results demonstrate that optimized ATO films possess desirable properties for electronic and optoelectronic device applications.

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How to Cite
1.
Kansaard T, Sawangjaeng J, Boonyarattanakalin K, Wattanawikkam C, Noonuruk R. Tuning Electrical and Optical Properties of SnO2 Films: Influence of Sb Dopant Concentration and Coating Layer in Spin-Coating Process. Thai J. Nanosci. Nanotechnol. [internet]. 2025 Jun. 30 [cited 2025 Jul. 1];10(1):27-36. available from: https://ph05.tci-thaijo.org/index.php/TJNN/article/view/184
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Research Articles

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