Enhanced lifetime characteristics in flexible polymer light-emitting devices by encapsulation of epoxy/silica-coated gold nanoparticles resin (ESGR)

被引：3

作者：

Chiu, Pin-Hsiang ^{[1
,2
]}

Huang, Chien-Jung ^{[1
]}

Yang, Cheng-Fu ^{[3
]}

Meen, Teen-Hang ^{[4
]}

Wang, Yeong-Her ^{[5
]}

机构：

[1] Natl Univ Kaohsiung, Dept Appl Phys, Kaohsiung, Taiwan

[2] Air Force Inst Technol, Dept Aviat & Commun Elect, Kaohsiung, Taiwan

[3] Natl Univ Kaohsiung, Dept Chem & Mat Engn, Kaohsiung, Taiwan

[4] Natl Formosa Univ, Dept Elect Engn, Huwei, Yunlin, Taiwan

[5] Natl Cheng Kung Univ, Dept Elect Engn, Inst Microelect, Tainan 70101, Taiwan

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2010年 / 172卷 / 03期

关键词：

Light-emitting diodes; Polymers; Thin films; Evaporation;

D O I：

10.1016/j.mseb.2010.05.031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reports the effects of a new multilayer encapsulation for the lifetime of flexible PLEDs on plastic substrate. The multilayer encapsulation consisted of a novel epoxy/silica-coated gold nanoparticles resin (ESGR) as the pre-encapsulation layer and a SiO2 layer as the encapsulation cap. The ESGR was prepared by mixing UV-curable epoxy resin and powders of silica-coated gold nanoparticles. The silica-coated gold nanoparticles is a necessity because the epoxy resin is not a good moisture barrier. The flexible PLEDs with multilayer encapsulation exhibited no dark spots after being stored for over 300 h at 25 degrees C and 60% relative humidity. Also, the operational half-luminance decay time of device was 1360h, seven times longer than that of a device without encapsulation. These results confirmed that the multilayer encapsulation, which restricted the moisture that penetrated into the devices, could be applied to the encapsulation of flexible PLEDs. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：317 / 320

页数：4

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