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A study of the operating parameters and barrier thickness of Al0.08In0.08Ga0.84N/Al x In y Ga1−xy N double quantum well laser diodes


The operating parameters such as the internal quantum efficiency (ηi), internal loss (αi) and transparent threshold current density (J 0) of double quantum well laser diodes were investigated and identified using the program, Integrated System Engineering-Technical Computer Aided Design (ISE-TCAD). Various thicknesses (6, 7, 8, 10, 12 nm) of Al x In y Ga1−xy N barriers with (3 nm) Al0.08In0.08Ga0.84N wells as an active region were studied. The lowest threshold current (I th), and the highest output power (P op) were 116 mA and 196 mW respectively, at barriers thickness of 6 nm, Al mole fraction of 10% and In mole fraction of 1%, at an emission wavelength of 359.6 nm.

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Ghazai, A.J., Thahab, S.M., Abu Hassan, H. et al. A study of the operating parameters and barrier thickness of Al0.08In0.08Ga0.84N/Al x In y Ga1−xy N double quantum well laser diodes. Sci. China Technol. Sci. 54, 47–51 (2011).

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  • AlInGaN
  • quaternary
  • UV laser diode
  • quantum well
  • barrier thickness