| Title |
A Study on Electrical·Optical Properties of Organic Light Emitting Diode by Oxygen Plasma Surface Treatment of Indium-Tin-Oxide Substrates |
| Authors |
양기성(Yang Ki-Sung) ; 김병상(Kim Byoung-Sang) ; 김두석(Kim Doo-Seok) ; 신훈규(Shin Hoon-Kyu) ; 권영수(Kwon Young-Soo) |
| Keywords |
산소 플라즈마 OLED ; Oxygen Plasma ; ITO(Indium-Tin-Oxide) ; AFM ; EDS ; XPS |
| 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. |