| Autor: | K. Žďánský, I. D. Hawkins |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Range (particle radiation)
Materials science Electron capture Photoconductivity General Physics and Astronomy chemistry.chemical_element Heterojunction Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Capacitance Exponential function Condensed Matter::Materials Science chemistry Atomic physics Tin Quantum tunnelling |
| Zdroj: | Czechoslovak Journal of Physics. 49:813-821 |
| ISSN: | 0011-4626 |
| DOI: | 10.1023/a:1021297325747 |
| Popis: | Capacitance decay after termination of light was measured on Alx Ga1 −xAs/GaAs heterostructures with p-n junctions. It has been shown that the decay can be well expressed by two curves of stretched exponential forms; exp[−(t/τ)β]. The temperature dependence of the characteristic timeτ of each of the two curves was determined in the range from 15K to 60K. The dependence follows the theoretical relation for electron capture dominated by tunneling via multiphonon emission. The estimated capture parameters show a strong electron-phonon coupling of two DX centers. Possible relation of these centers to tin is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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