| Exciton—Phonon Scattering in CdSe／ZnSe Quantum Dots |
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| 作者姓名： | 张立功 申德振 等 |
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| 作者单位： | [1]LaboratoryofExcitedStateProcess,ChangchunInstituteofOpticsFineMechanicsandPhysics,ChineseAcademyofSciences,Changchun130021 [2]LaboratoryofExcitedStateProcess,ChangchunInstituteofOpticsFineMechanicsandPhy |
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| 摘 要： | A temperature-dependent photoluminescence measurement is performed in CdSe/ZnSe quantum dots with a ZnCdSe quantum well.We deduce the temperature dependence of the exciton linewidth and peak energy of the zero-dimensional exciton in the quantum dots and two-dimensional exciton in the CdSe wetting layer.The experimental data reveal a reduction of homogeneous broadening of the exciton line in the quantum dots in comparison with that in the two-dimensional wetting layer,which indicates the decrease of exciton and optical phonon coupling in the CdSe quantum dots.
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| 关 键 词： | 激子－声子散射 CdSe／ZnSe 量子斑点 |
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