期刊
PHOTONICS
卷 10, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/photonics10080877
关键词
persistent photoconductivity; CdHgTe; heterostructures; double quantum wells
类别
Persistent photoconductivity spectra of HgTe/CdHgTe heterostructures with double quantum wells and different cap layers were studied in the range of 0.62-3.1 eV radiation excitation. It was found that the cap layer material determines the key features, local extrema, and origin of the PPC spectra. Additionally, an unusual oscillatory behavior of the PPC spectra was demonstrated to be independent of both the cap and barrier layers.
Persistent photoconductivity (PPC) spectra of HgTe/CdHgTe heterostructures with double quantum wells with different cap layers have been studied in the radiation excitation range 0.62-3.1 eV. We have shown that the material of the cap layer defines key features of the PPC spectra-local extrema-and their origin. An unusual oscillatory behavior of the PPC spectra is demonstrated. Such a behavior is shown to be independent of both cap and barrier layers.
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