Browse > Article

A Study on ElectricalㆍOptical Properties of Organic Light Emitting Diode by Oxygen Plasma Surface Treatment of Indium-Tin-Oxide Substrates  

Yang Ki-Sung (동아대학 전기공학과)
Kim Byoung-Sang (동아대학 전기공학과)
Kim Doo-Seok (동아대학 항만물류시스템공학과)
Shin Hoon-Kyu (동아대학 전기공학과)
Kwon Young-Soo (동아대학 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.54, no.1, 2005 , pp. 8-12 More about this Journal
Abstract
Indium tin oxide(ITO) surface treated by Oxygen plasma has been in situ analyzed using XPS(X-ray Photoelectron Spectroscopy) and EDS(Energy Dispersive Spectroscopy), to investigate the relations between the properties of the ITO surface and the properties of OLED(Organic Light Emitting Diode). We measured electrical resistivity using Four-Point-Probe and calculated sheet resistance, and ITO surface roughness was measured by AFM(Atomic Force Microscope). We fabricated OLED using substrate that was treated optimum ITO surface. The plasma treatment of the ITO surface lowered the operating voltage of the OLED. We have obtained an improvement of luminance and decrease of turn-on voltage.
Keywords
OLED; Oxygen Plasma; ITO(Indium-Tin-Oxide); AFM; EDS; XPS;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Dan Lu, Ying Wu, Jianhua Guo, Guang Lu, Yue Wang, Jiacong Shen, 'Surface treatment of indium tin oxide by oxygen-plasma for organic light-emitting diodes', Materials Science and Engineering, Vol. B97, pp.141-144, 2003   DOI   ScienceOn
2 Y. Park, V. Choong, B. R. Hsieh, C. W. Tang, Y. Gao, 'Work function of indium tin oxide transparent conductor measured by photoelectron spectroscopy', Applied Physics Letters, Vol. 68, pp. 2699-2701, 1996   DOI
3 Tang, C. W. and VanSlyke and S. A. Organic electroluminescent diodes. Appl. Phys. Lett., 51, 913 (1987)   DOI
4 I. D. Parker, 'Carrier tunneling and device characteristics in polymer light-emitting diodes', Journal of Applied Physics, Vol. 75, No.3, pp.1656-1666, 1987   DOI   ScienceOn
5 K. Book, H. Bassler, A. Elschner, S. Kirchmeyer, 'Hole injection from an ITO/PEDT anode into the hole transporting layer of OLED probed by bias induced absorption', Organic Electronics, Vol. 4, pp. 227-232, 2003   DOI   ScienceOn
6 박상무, 김형권, 신백균, 임경범, 이덕출, 'RF 플라즈마를 이용한 유기EL 소자의 발광 효율에 관한 연구', 대한 전기학회 논문지, 52C호, 제9권, pp.400-406, 2003
7 S. Jung, N. G. Park, M. Y. Kwak, B. O. Kim, K. H. Choi, Y. J. Cho, Y. K. Kim, Y. S. Kim, 'Surface treatment effects of indium-tin-oxide in organic light-emitting diodes', Optical Materials, Vol. 21, pp. 235-241, 2002   DOI   ScienceOn
8 M. Ishii, T. Mori, H. Fujikawa, S. Tokito, Y. Taga, 'Improvement of organic electroluinescent device performance by in situ plasma treatment of indium-tin-oxide surface', Journal of Luminescence, Vol. 87-89, pp. 1165-1167, 2000   DOI   ScienceOn