스크린 프린팅 방법으로 인쇄한 단일층 구조의 무기전계 발광소자의 특성에 관한 연구ㅡ

Abstract

ZnS:(Cu,Al) thin film electroluminescence devices have been fabricated by screen printing method. BaTiO3 was used to the dielectric material. The fabrication of the device has been made by a manual screen printing on variety of variables, the optimal conditions were set. In this study, device structure was prepared in two ways. One structure is mixed with phosphor and dielectric material, another is printed separately each other. In case of separated structure was named to the 2 layer structure, phosphor, dielectric, rare electrode were stacked on the glass coated with ITO electrodes in order. In another case of mixed structure was named to the 1 layer structure. There were two cases in the production of the sample. One was the sum of thickness of a phosphor layer and a dielectric layer fixed at 60㎛. The other case fixed sum of weight. Phosphor within the device was set up to four times the proportion of the dielectric by controll thickness and weight of each layer. Comparison of characteristics according to the structure of the device was carried out by measurement in cross sectional SEM image, XRD pattern, emission spectrum.