White electroluminescence from a hybrid polymer-GaN:Mg nanocrystals device

被引：7
|
作者：
Tan, Mingqian [1 ]
Mahalingam, Venkataramanan [1 ]
van Veggel, Frank C. J. M. [1 ]
机构：
[1] Univ Victoria, Dept Chem, Victoria, BC V8W 3V6, Canada
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 09期
基金：
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词：
D O I：
10.1063/1.2772667
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A magnesium-doped gallium nitride nanocrystal (GaN:Mg NC)-based electroluminescence (EL) device is reported with a hybrid organic/inorganic structure of indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene) doped with poly (styrenesulphonic acid) (PEDOT:PSS)/GaN:Mg NCs/Ca/Al. The conducting polymer, PEDOT:PSS layer, was used to enhance hole injection from the ITO electrode. Current-voltage characteristics of the GaN:Mg nanocrystal-based EL device show a diodelike behavior. White electroluminescence was observed from the device and a voltage-dependent phenomenon of EL emission spectra was found and investigated. A good correlation between the EL and photoluminescence emission peaks suggests that electron-hole recombination indeed occur in the GaN:Mg nanocrystals layer.
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页数：3
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