Mechanisms of radiative and nonradiative recombination in ZnSe:Cr and ZnSe:Fe

Mechanisms of radiative and nonradiative recombination in ZnSe:Cr and ZnSe:Fe

Godlewski, M. ; Surma, M. ; Ivanov, V.Yu. ; Surkova, T.P.

Тема: Примесные состояния в полупроводниках с переходными элементами

Інший ID: PACS: 42.55.Px, 71.55.Gs, 78.55.Et

URI: http://dspace.nbuv.gov.ua/handle/123456789/120276

Посилання: Mechanisms of radiative and nonradiative recombination in ZnSe:Cr and ZnSe:Fe / M. Godlewski, M. Surma, V.Yu. Ivanov, T.P. Surkova // Физика низких температур. — 2004. — Т. 30, № 11. — С. 1187–1193. — Бібліогр.: 18 назв. — англ.

Підтримка: This work was partly supported by the RFBR-Ural (Grant 04-02-96096).

Дата: 2004

Завантажень: 454

Mechanisms of radiative and nonradiative recombination in ZnSe:Cr and ZnSe:Fe

Анотація:

Possible applications of ZnSe:Cr in optoelectronics are discussed. It is shown that 2+ to 1+ photo-ionization of chromium results in efficient pumping of Cr²⁺ intrashell emission and in energy up-conversion from green to blue. A distinct difference in efficiency of the energy up-conversion is observed between chromium and iron doped ZnSe samples. This difference we relate to a very efficient Auger mechanism of photoluminescence quenching in Fe-doped samples. We further demonstrate an anticorrelation of intensity of mid-infrared Cr emission and up-converted blue emission of ZnSe.

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