alexa Abstract | Synthesis and electrical properties of ZnO-ITO and Al-ITO thin film by spin coating technique through sol gel process

Journal of Chemical and Pharmaceutical Research
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Abstract

In this research we has investigated synthesis and electrical properties of ITO (Indium Tin Oxide) thin layers doping Aluminum (Al) and ZnO with spin-coating technique through sol-gel process and calcined at ±550 ºC for 1 hour. Effect of Al and ZnO doping on the conductivity of ITO with 0%, 1%, 3% and 5% w/v dopant concentration and the number of coating (4 and 5 layers) has reported. ITO-Al has 2 phases, these are rhombohedral and cubic, the crystal size is 67.31 nm. Meanwhile, ITO-ZnO are rhombohedral, cubic (bixbyite) and hexagonal (wurtzite), with crystallite size value was 67.4 nm. The surface morphology data indicated film thickness was 3.4 μm (ITO-Al) and 0.974 nm (ITO-ZnO). The electrical properties shows that the optimum film in 4 layers coating with the addition of 5% doping value was 17 kΩ/cm2 (ITO-Al) and 5-layered by addition of 5% of doping ZnO (80.800 kΩ/cm2). Meanwhile, ITO-Al thin film with 4 layers coating without doping was 9.331 kΩ / cm2, and for ITO-ZnO (5 layers) coating without doping was 11.796 kΩ/cm2. Al and ZnO doping decrease the electrical conductivity of ITO.

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Author(s): Hardeli Hary Sanjaya and Rahadian Zainul

Keywords

ITO, Sol-gel, Spin-coating, Thin film, Al and ZnO doping, spin coating technique

 
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