National Changhua University of Education Institutional Repository : Item 987654321/12525
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題名: Effect of Spontaneous and Piezoelectric Polarization on Optical Characteristics of Ultraviolet AlGaInN Light-emitting Diodes
作者: Tsai, Miao-Chan;Yen, Sheng-Horng;Chang, Shu-Hsuan;Kuo, Yen-Kuang
貢獻者: 物理學系
關鍵詞: Light-emitting diode;LED;Piezoelectric effect;Numerical simulation
日期: 2009-04
上傳時間: 2012-07-19T01:48:27Z
出版者: Elsevier
摘要: Polarization is a crucial issue for electrical and optical characteristics of the UV AlGaInN light-emitting diodes. The effect of spontaneous and piezoelectric polarization on optical characteristics of the UV AlGaInN light-emitting diodes is investigated numerically. The simulation results indicate that the polarization-related effect for the UV AlGaInN light-emitting diodes is dominated by the piezoelectric polarization. When the UV AlGaInN light-emitting diodes are without piezoelectric polarization, the optical performance is enhanced effectively due to improved overlap of electron and hole wavefunctions, reduced electron leakage current, and increased density of holes in the active region.
關聯: Optics Communications, 282(8): 1589-1592
顯示於類別:[物理學系] 期刊論文

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