辐照红宝石的发光和辐射缺陷

2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI:10.1109/OMEE.2012.6464800

V. Harutyunyan, E. Aleksanyan, E. Hakhverdyan, N. Grigoryan, V. Baghdasaryan, V. Makhov, M. Kirm

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引用次数: 0

摘要

用高偏振同步辐射研究了辐照和未辐照红宝石晶体的发光激发。在紫外发光光谱中，观察到辐照晶体和未辐照晶体存在快发射和慢发射。在3.8 eV处最大发光带由F+中心产生。在4.6 eV波段建立了一种新的快速发光模式。它被称为交叉发光，与价带电子与低核能级空穴的复合有关。结果表明，3.0 eV的能带不是由阴离子中心(f中心)引起的，而是由短寿命发射中心决定的。

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Luminescence and radiation defects in irradiated ruby

The excitations of luminescence in irradiated and non-irradiated ruby crystals are investigated by means of highly polarized synchrotron radiation. In the VUV luminescence spectra the existence of quick and slow emission was observed in irradiated and nonirradiated crystals. The luminescence bands with maximum at 3.8 eV are produced by F+ centers. A new type of quick luminescence was established for the band at 4.6 eV. It is called cross-luminescence and is connected with the recombination of valence band electrons with holes in low-lying core levels. It is shown that the band at 3.0 eV is not due to anionic centers (F-centers), but is determined by a short lifetime emission center.

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2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)

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