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Korea Photovoltaic Society (한국태양광발전학회)
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Feasibility of Indium Tin Oxide (ITO) Swarf Particles to Transparent Conductive Oxide (TCO)

  • Hong, Sung-Jei (Display Components and Materials Research Center, Korea Electronics Technology Institute) ;
  • Yang, DuckJoo (Department of Chemistry, The University of Texas at Dallas) ;
  • Cha, Seung Jae (Display Components and Materials Research Center, Korea Electronics Technology Institute) ;
  • Lee, Jae-Yong (Hanchung RF Co. Ltd.) ;
  • Han, Jeong-In (Department of Chemical and Biochemical Engineering, Dongguk University-SEOUL)
  • Received : 2015.04.07
  • Accepted : 2015.04.17
  • Published : 2015.06.30
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Abstract

Indium (In) is widely used for transparent electrodes of photovoltaics as a form of indium tin oxide (ITO) due to its superior characteristics of environmental stability, relatively low electrical resistivity and high transparency to visible light. However, In has been worn off in proportion to growth the In related market, and it leads to raise of price. Although In is obtained from ITO target scarps, much harmful elements are used for the recycling process. To decrease of harmful elements, ITO swarf particles obtained from target scraps was characterized whether it is feasible to transparent conductive oxide (TCO). The ITO swarf was crushed with milling process, and it was mixed with new ITO nanoparticles. The mixed particles were well dispersed into ink solvent to make-up an ink, and it was well coated onto glass substrate. After heat-treatment at $400^{\circ}C$ under $N_2$ rich environments, optical transmittance at 550 nm and sheet resistance of the ITO ink coated layer was 71.6% and $524.67{\Omega}/{\square}$, respectively. Therefore, it was concluded that the ITO swarf was feasible to TCO of touch screen panel.

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References

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