Optical Properties of Highly Strained GaInAs/GaAs Quantum Wells Grown by Sb Assistance |
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引用本文: | 屈玉华,江德生,吴东海,牛智川,孙征.Optical Properties of Highly Strained GaInAs/GaAs Quantum Wells Grown by Sb Assistance[J].中国物理快报,2005,22(8):2088-2091. |
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作者姓名: | 屈玉华 江德生 吴东海 牛智川 孙征 |
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作者单位: | InstituteofSemiconductors,ChineseAcademyofSciences,Beijing100083 |
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摘 要: | Optical properties of highly strained GaInAs/GaAs quantum wells (QWs) grown by molecular beam epitaxy with Sb assistance are investigated. The samples grown by Sb incorporation and Sb pre-deposition methods display high room-temperature photoluminescence (PL) intensity at extended 10ng wavelength. This result is explained by the surfactant effects of Sb during the growth of GaInAs/GaAs QW systems. An abnormal Sshaped temperature dependence of the PL peak position is found in the In0.42Ga0.58As/GaAs triple QWs sample grown with Sb pre-deposition. By investigating the transmission electron microscope images and time-resolved PL spectra, it is found that the S-shaped temperature dependence of the PL peak position originates from the exciton 10calization effect brought by the Sb-rich clusters on the QW interface.
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关 键 词: | 量子论 光学性质 晶体 光致发光 波长 |
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