대향 타겟식 스퍼터링으로 증착한 ITO 박막이 적용된 유기발광다이오드의 특성

Abstract

In this study, we prepared OLED cell with ITO (Indium Tin Oxide) films grown on the glass substrate by facing targets sputtering. Before fabrication of OLED cells, we investigated properties of ITO films deposited at various sputtering conditions. To investigate properties of as-prepared films, we employed four-point probe, UV-VIS spectrometer, X-ray diffractometer (XRD), field emission scanning electron microscopy (FE-SEM), hall-effect measurement. As a results, as-prepared ITO films have high transmittance of over 85 % in the visible range (300-800 nm) and a resistivity of under 10-4 (Ω-cm). Their resistivity increased as a function of oxygen gas flow and substrate temperature. OLED cell with ITO films were fabricated by thermal evpoeartor. Properties of OLEDs cell referring to properties of ITO films.