硫系玻璃薄膜封装层对OLED寿命的影响  

Influence of Sulfide Glass Thin Film Encapsulation Layer on Lifetime of OLEDs

作　　者：张方晖[1,2] 席俭飞[1,2] 王秀峰[3] 

机构地区：[1]陕西省平板显示技术工程研究中心,西安710021 [2]陕西科技大学电气与信息工程学院,西安710021 [3]陕西科技大学材料科学与工程学院,西安710021

出　　处：《半导体光电》2010年第1期30-33,共4页Semiconductor Optoelectronics

基　　金：陕西省专利产业化项目(2005ZZ-04);陕西省教育厅产业化项目(06JC23)

摘　　要：在高真空条件下(3×10-4Pa),利用硫系玻璃(Se,Te,Sb)薄膜封装材料对有机电致发光器件(OLED)进行原位封装,有效避免了传统封装方法难以避免的水、氧危害,以达到延长器件寿命的目的。实验对比了正常封装与增加Se、Te、Sb薄膜封装层后器件的性能,对比实验中封装过程都未加干燥剂。研究发现Se、Te、Sb薄膜封装层分别可以使器件的寿命延长1.4倍,2倍,1.3倍以上;采用封装层对器件的电流-电压特性、色坐标等光电性能几乎不产生影响,但影响了器件散热,薄膜封装层使器件的击穿电压、最高亮度等参数稍有下降。On the condition of high vacuum（3×10^-4 Pa）, sulfide glass（Se,Te,Sb）thin film encapsulation layer was used as the protecting layer to OLEDs（organic light emitting diode）, succeeding in prolonging the lifetime of the devices as well as avoiding the influence of H2O and oxygen of traditional encapsulation method. Contrast test without desiccant was adopted, and it is found that the lifetime of the devices with Se, Te, Sb thin film encapsulate layer can be enhanced by 1.4, 2. 0, 1. 3 times, respectively. And sulfide glass thin film encapsulated layer has little influence on the performance of the devices, but it is harmful to the radiation of OLEDs, making the parameters of the breakdown voltage and the highest luminance decrease. So it is suggested that sulfide glass can be used as the encapsulation layer to improve the stability of the device effectively and prolong the lifetime obviously.

关 键 词：OLED 硫系玻璃 薄膜封装 寿命 

分 类 号：TN383.1[电子电信—物理电子学]