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Effects of Reactive Gas Addition on the Mechanical Property and Water Permeability of IZO Films Deposited by DC Sputtering for Application to Flexible OLED

DC 마그네트론 스퍼터로 증착한 flexible OLED용 IZO 박막의 기계적 특성과 투습특성에 미치는 반응성 가스 첨가의 효과

  • Cheon, Ko-Eun (School of Materials Science and Engineering, Pusan National University) ;
  • Lee, Dong-Yeop (School of Materials Science and Engineering, Pusan National University) ;
  • Cho, Young-Rae (School of Materials Science and Engineering, Pusan National University) ;
  • Song, Pung-Keun (School of Materials Science and Engineering, Pusan National University)
  • Published : 2007.12.31

Abstract

Amorphous IZO films were deposited on PET substrate by DC magnetron sputtering without substrate heating. In order to investigate effect of reactive gas addition on film properties, 0.2-0.4% of $H_2$ or $O_2$ gas was introduced during the deposition. Deposited IZO films were evaluated with mechanical property, electrical property, and water permeability. In the case of $H_2$ gas addition, mechanical property showed clear degradation compared to $O_2$ gas. In the case of $O_2$ gas, water permeability of the IZO film was increased compared to $H_2$ gas which could be attributed to the low adhesion of the film caused by bombardment of high energy negative oxygen ion. As a result, it is confirmed that water permeability of the film could be strongly affected by adhesion of the film.

Keywords

References

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