National Changhua University of Education Institutional Repository : Item 987654321/12521

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NCUEIR > College of Science > Department of Physics > Periodical Articles > Item 987654321/12521

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/12521

Title:	Improvement in Piezoelectric Effect of Violet InGaN Laser Diodes
Authors:	Yen, Sheng-Horng;Kuo, Yen-Kuang
Contributors:	物理學系
Keywords:	Numerical simulation;Semiconductor lasers;Laser materials
Date:	2008-09
Issue Date:	2012-07-19T01:48:21Z
Publisher:	Elsevier
Abstract:	The laser performance of violet InGaN laser diodes is investigated numerically. The polarization-dependent properties, including overlap of electron and hole wavefunctions, threshold current, and slope efficiency, are studied through the use of step-like quantum well structure. Furthermore, the electron and hole wavefunctions, band diagrams, and emission wavelength are compared and analyzed. The simulation results show that the lowest threshold current and the highest slope efficiency are obtained when the step-like quantum well structure is designed as In0.12Ga0.88N (2.5 nm)–In0.18Ga0.82N (1 nm) or In0.18Ga0.82N (2.5 nm)–In0.12Ga0.88N (1 nm) for violet laser diodes due to sufficiently enhanced overlap of electron and hole wavefunctions.
Relation:	Optics Communications, 281(18): 4735-4740
Appears in Collections:	[Department of Physics] Periodical Articles

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