Effect of Ag cathode deposition rate on the performance of organic light-emitting diodes

被引：2
作者：
Xie, Jiaqi [1 ]
Li, Peicheng [1 ]
Ho, Kevin [2 ]
Walker, Gilbert C. [2 ]
Lu, Zheng-Hong [1 ,3 ]
机构：
[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S3E4, Canada
[2] Univ Toronto, Dept Chem, Toronto, ON M5S3H6, Canada
[3] Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China
来源：
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2020年 / 117卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Organic light-emitting diodes; Physical vapour deposition; Current leakage; Emission uniformity; Device processing optimization; DIFFUSION; LEAKAGE; TRANSPARENT; BLOCKING;
D O I：
10.1016/j.mssp.2020.105170
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The effect of deposition rate of silver (Ag) cathode on the device performance of organic light-emitting diodes (OLEDs) has been investigated. The leaky current before the turn-on of devices was observed in the samples that have the Ag cathode deposited at relatively low rate (less than 0.5 angstrom/s), and their emission efficiencies were found to be undesirably inconsistent. These issues were not observed in the samples that have Ag cathode deposited at higher rate (>1.0 angstrom/s). Here we show that the pixel-to-pixel uniformity of OLEDs employing Ag cathode can be simply improved by depositing the cathode at high rate, since the rapid deposition suppresses the Ag diffusion into underlying organic layer.
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页数：7
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