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Origination and evolution of point defects in AlN film annealed at high temperature
C. Kai; H. Zang; J. Ben; K. Jiang; Z. Shi; Y. Jia; X. Cao; W. Lu; X. Sun and D. Li
2021
发表期刊Journal of Luminescence
ISSN222313
卷号235
摘要While high temperature annealing has been proven to be an effective strategy to reduce threading dislocation density of AlN film, the point defect induced near-ultraviolet emission increases dramatically with the increase in annealing temperature, and thus limits its application in deep ultraviolet optoelectronic devices. Herein, the origination and evolution of point defects in high-temperature annealed AlN are studied and clarified by photoluminescence spectroscopy, secondary ion mass spectrometry, positron annihilation and first-principles calculation. We have confirmed that (1) the annealing induces the increased O impurity concentration by two orders of magnitude; (2) The increase of O impurity concentration in AlN after high temperature annealing is the key factor that causes the evolution of point defects and the enhancement of near ultraviolet defect peak; (3) the formation of more O content [VAl-n(ON)] and VN at different annealing temperatures are responsible for photoluminescence evolution. Present work reveals the formation mechanism of point defects in AlN and provides further support for improving the quality of AlN. 2021 Elsevier B.V.
DOI10.1016/j.jlumin.2021.118032
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收录类别SCI ; EI
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文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/65510
专题中国科学院长春光学精密机械与物理研究所
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C. Kai,H. Zang,J. Ben,et al. Origination and evolution of point defects in AlN film annealed at high temperature[J]. Journal of Luminescence,2021,235.
APA C. Kai.,H. Zang.,J. Ben.,K. Jiang.,Z. Shi.,...&X. Sun and D. Li.(2021).Origination and evolution of point defects in AlN film annealed at high temperature.Journal of Luminescence,235.
MLA C. Kai,et al."Origination and evolution of point defects in AlN film annealed at high temperature".Journal of Luminescence 235(2021).
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