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Effect of indium distribution on optical properties
in InGaAs/GaAs quantum wells |
| Guozhi JIA 1, Jianghong YAO 2, Yongchun SHU 2, Xiaodong XIN 2, Biao PI 2, |
| 1.Tianjin Institute
of Urban Construction; 2.The Key Lab of
Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics
Materials, TEDA Applied Physics School, Nankai University; |
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Abstract The effect of In surface segregation and diffusion on the transition energy of an InGaAs/GaAs strained quantum well (QW) was investigated theoretically. Diffusion equations and the Schrödinger equation on the InGaAs/GaAs QW were solved numerically. The energy shifts under different diffusion lengths were simulated. When the width of QW, L, is larger than 5 nm, the change rate of the transition energy is very minimal at the initial stage of the annealing process for wide QW, and the transition energy has a rapid blue shift with an increase of the diffusion length. When L is smaller than 5 nm, the transition energy is very sensitive to the diffusion length. The change rate of transition energy increases with a decrease in QW width.
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Issue Date: 05 March 2009
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