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Chin. Phys. B, 2014, Vol. 23(2): 028502    DOI: 10.1088/1674-1056/23/2/028502

Performance improvement of GaN-based light-emitting diode with a p-InAlGaN hole injection layer

Yu Xiao-Peng (喻晓鹏)a b, Fan Guang-Han (范广涵)a b, Ding Bin-Bin (丁彬彬)a b, Xiong Jian-Yong (熊建勇)a b, Xiao Yao (肖瑶)a b, Zhang Tao (张涛)a b, Zheng Shu-Wen (郑树文)a b
a Institute of Optoelectronic Materials and Technology, South China Normal University, Guangzhou 510631, China;
b Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510631, China
Abstract  The characteristics of a blue light-emitting diode (LED) with a p-InAlGaN hole injection layer (HIL) is analyzed numerically. The simulation results indicate that the newly designed structure presents superior optical and electrical performance such as an increase in light output power, a reduction in current leakage and alleviation of efficiency droop. These improvements can be attributed to the p-InAlGaN serving as hole injection layers, which can alleviate the band bending induced by the polarization field, thereby improving both the hole injection efficiency and the electron blocking efficiency.
Keywords:  InGaN light-emitting diodes (LEDs)      p-InAlGaN hole injection layer (HIL)      numerical simulation  
Received:  19 July 2013      Revised:  17 September 2013      Accepted manuscript online: 
PACS:  85.60.Jb (Light-emitting devices)  
  73.61.Ey (III-V semiconductors)  
  87.15.A- (Theory, modeling, and computer simulation)  
  78.60.Fi (Electroluminescence)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61176043) and the Special Funds for Strategic and Emerging Industries Projects of Guangdong Province, China (Grant Nos. 2010A081002005, 2011A081301003, and 2012A080304016).
Corresponding Authors:  Zhang Tao, Zheng Shu-Wen     E-mail:;
About author:  85.60.Jb; 73.61.Ey; 87.15.A-; 78.60.Fi

Cite this article: 

Yu Xiao-Peng (喻晓鹏), Fan Guang-Han (范广涵), Ding Bin-Bin (丁彬彬), Xiong Jian-Yong (熊建勇), Xiao Yao (肖瑶), Zhang Tao (张涛), Zheng Shu-Wen (郑树文) Performance improvement of GaN-based light-emitting diode with a p-InAlGaN hole injection layer 2014 Chin. Phys. B 23 028502

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