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西北大学 信息科学与技术学院
收稿:2008-07-17,
修回:1900-1-2,
网络首发:2009-10-30,
纸质出版:2009-10-30
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吕 婷, 张志勇, 闫军锋, 等. Zn1-xMgxO和Zn1-xMnxO薄膜的制备及其发光性能[J]. 发光学报, 2009,30(5):624-629.
LU Ting, ZHANG Zhi-yong, YAN Jun-feng, et al. The Preparation and Optical Properties of Zn1-xMgxO and Zn1-xMnxO Thin Films by Sol-gel Process[J]. Chinese Journal of Luminescence, 2009, 30(5): 624-629.
采用溶胶-凝胶技术
在Si(110)衬底上制备了Mg、Mn掺杂外延生长的Zn
1-x
Mg
x
O和Zn
1-x
Mn
x
O薄膜
通过XRD、AFM、PL等考察不同杂质浓度对薄膜结晶质量和发光性能的影响。结果表明:Zn
1-x
Mg
x
O和Zn
1-x
Mn
x
O薄膜均具有较高的T
c
(002)结构系数和较为光滑、平整的表面形貌。掺杂使得薄膜的紫外发光峰向短波方向移动至365 nm左右
同时Zn
1-x
Mn
x
O薄膜的室温可见光发射得以有效地钝化
使其近带边紫外光发射与深能级可见光发射比例高达56
极大地提高了薄膜紫外发光性能。并对掺杂薄膜紫外发光蓝移和Zn
1-x
Mn
x
O薄膜室温可见光发射的猝灭机理进行了深入探讨
得出掺杂组分为Zn
0.85
Mg
0.15
O、Zn
0.97
Mn
0.03
O时
薄膜具有最强的紫外光发射性能。
paper
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