- Tytuł:
- Efficient Two-Center Auger Mechanism of Electron Trapping by Fe$\text{}^{3+}$ Ions in ZnSe:Fe,Cr
- Autorzy:
-
Surma, M.
Godlewski, M. - Powiązania:
- https://bibliotekanauki.pl/articles/1968433.pdf
- Data publikacji:
- 1997-11
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
76.30.He
71.55.Gs
78.55.Et - Opis:
- A detailed analysis of decay kinetics of light induced electron spin resonance signals of Cr$\text{}^{1+}$ and Fe$\text{}^{3+}$ ions in ZnSe:Fe,Cr is given. We observe that the Cr$\text{}^{1+}$ electron spin resonance signal decays once free electrons are thermally ionized from shallow donors of ZnSe. Such unusual behavior of the Cr$\text{}^{1+}$ electron spin resonance signal is explained by efficient two-center Auger recombination: the Cr$\text{}^{1+}$ center is ionized due to the Auger-type energy transfer from the electron being trapped by the Fe$\text{}^{3+}$ ion. Such process is shown to be consistent with the temperature dependence of the decay times of electron spin resonance signals. Its quantum efficiency is estimated to be as large as 18% for Cr and Fe concentrations which were studied.
- Źródło:
-
Acta Physica Polonica A; 1997, 92, 5; 1017-1020
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł