Direct determination of the ambipolar diffusion length in GaAs/AlGaAs heterostructures by cathodoluminescence
Direct determination of the ambipolar diffusion length in GaAs/AlGaAs heterostructures by cathodoluminescence
复制标题
通过阴极发光直接测定 GaAs/AlGaAs 异质结构中的双极扩散长度
DOI:
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复制
发表时间:
1989
期刊:
影响因子:
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通讯作者:
K. Vahala
中科院分区:
文献类型:
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作者:
H. Zarem;P. Sercel;J. A. Lebens;L. Eng;A. Yariv;K. Vahala
A new technique for determining carrier diffusion lengths by cathodoluminescence measurements is presented. The technique is extremely accurate and can be applied to a variety of structures. Ambipolar diffusion lengths are determined for GaAs quantum well material, bulk GaAs, Al0.21Ga0.79As, and Al0.37Ga0.63As. A large increase in the diffusion length is found for Al0.37Ga0.63As and is attributed to an order of magnitude increase in lifetime.