DOI: 10.3390/photonics10080877 ISSN: 2304-6732
Cap Layer Effect on Key Features of Persistent Photoconductivity Spectra in HgTe/CdHgTe Double Quantum Well Heterostructures
Mikhail K. Sotnichuk, Aleksei S. Kazakov, Ilya D. Nikolaev, Konstantin A. Drozdov, Roman V. Menshchikov, Sergey A. Dvoretsky, Nikolay N. Mikhailov, Dmitry R. Khokhlov, Anton V. Ikonnikov- Radiology, Nuclear Medicine and imaging
- Instrumentation
- Atomic and Molecular Physics, and Optics
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.