Growth and spectral characterization of β-Ga₂O₃ single crystals

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• 作者：Jungang Zhang ; Bin Li ; Changtai Xia ; Guangqing Pei ; Qun Deng ; Zhaohui Yang ; Wusheng Xu ; Hongsheng Shi ; Feng Wu ; Yongqing Wu and Jun Xu
• 关键词：A. Oxides ; B. Crystal growth ; D. Luminescence ; D. Optical properties
• 刊名：Journal of Physics and Chemistry of Solids
• 出版年：2006
• 出版时间：December 2006
• 年：2006
• 卷：67
• 期：12
• 页码：2448-2451
• 全文大小：273 K

文摘

Beta gallium oxide (β-Ga₂O₃) single crystals were grown by the floating zone technique. The absorption spectra and the luminescence of the crystals were measured. The absorption spectra showed an intrinsic short cutoff edge around 260 nm with two shoulders at 270 and 300 nm. Not only the characteristic UV (395 nm), blue (471 nm) and green (559 nm) lights, but also the red (692 nm) light can be seen in the emission spectra. The deep UV light was attributed to the existing of quantum wells above the valence band and the red light was owed to the electron–hole recombination via the vicinity donors and acceptors.