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题名: Quantum-confined Stark effects of exciton states in V-shaped GaAs/AlxGa1-xAs quantum wires
作者: Chang K;  Xia JB
发表日期: 1998
摘要: Quantum-confined Stark effects are investigated theoretically in GaAs/AlxGa1-xAs quantum wires formed in V-grooved structures. The electronic structures of the V-shaped quantum wires are calculated within the effective mass envelope function theory in the presence of electric field. The binding energies of excitons are also studied by two-dimensional Fourier transformation and variational method. The blue Stark shifts are found when the electric field is applied in the growth direction. A possible mechanism in which the blueshifts of photoluminescence peaks are attributed to two factors, one factor comes from the asymmetric structure of quantum wire along the electric field and another factor arises from the electric-field-induced change of the Coulomb interaction. The numerical results are compared with the recent experiment measurement.
KOS主题词: Optical properties;  Electric field;  Binding energy;  Dependency;  absorption;  Infrared spectra;  Spectrum analysis
刊名: PHYSICAL REVIEW B
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Chang K; Xia JB .Quantum-confined Stark effects of exciton states in V-shaped GaAs/AlxGa1-xAs quantum wires ,PHYSICAL REVIEW B,1998,58(4):2031-2037
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