Organic/inorganic heterostructures for enhanced electroluminescence

被引：24

作者：

Huang, Jinzhao ^{[1
]}

Xu, Zheng ^{[1
]}

Zhao, Suling ^{[1
]}

Li, Yuan ^{[1
]}

Zhang, Fujun ^{[1
]}

Song, Lin ^{[1
]}

Wang, Yongsheng ^{[1
]}

Xu, Xurong ^{[1
]}

机构：

[1] Jiao Tong Univ, Inst Optoelect Technol, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2007年 / 142卷 / 07期

基金：

中国国家自然科学基金;

关键词：

organic/inorganic heterostructure; barrier potential; electroluminescence; electric field;

D O I：

10.1016/j.ssc.2007.03.001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this work, organic/inorganic heterostructure electroluminescence devices are fabricated, in which the inorganic layers (ZnO, ZnS) act as the electron transfer layer and the hole blocking layer. Compared to single-organic-layer (MEH-PPV) devices, the heterostructure devices have a significantly enhanced luminous efficiency. The influences of the electric field and the barrier potential on the improvements in performance are analyzed in detail. The results are: (i) the introduction of the inorganic layer makes the injection of electrons easier; (ii) the hole current density is enhanced by the increase of the electric field in the organic layer due to a high dielectric constant of the inorganic layer and accumulation of electrons at the inorganic/organic interface; (iii) the electron-hole current density balance is improved. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：417 / 420

页数：4

共 19 条

[1] LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].