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Lanthanum-doped ZnO quantum dots with greatly enhanced fluorescent quantum yield
Sun, LW; Shi, HQ; Li, WN; Xiao, HM; Fu, SY; Cao, XZ; Li, ZX;曹兴忠; Li ZX(李卓昕)
2012
发表期刊JOURNAL OF MATERIALS CHEMISTRY
卷号22期号:17页码:8221-8227
摘要The lanthanum-doped ZnO quantum dots (QDs) are synthesized by a modified sol-gel method under atmospheric conditions. The as-prepared quantum dots are characterized by X-ray powder diffraction, energy dispersion spectrum analysis and high resolution transmission electron microscopy. The optical properties of the products are studied by ultra-violet spectroscopy and fluorescent spectroscopy. The results show that the doped quantum dots exhibit greatly enhanced luminescent properties and their quantum yield centered around 495 nm is increased from 30.5% for un-doped ZnO QDs already improved by silane surface modification to 77.9% for La-doped ZnO QDs at a proper La-doping content, which is the highest reported so far for the green-emitting ZnO QDs. Positron annihilation spectroscopy is employed to probe the vacancy-type defects of ZnO QDs. Finally, anti-counterfeiting inks are prepared by incorporating La-doped ZnO QDs into the transparent oil and their possible potential applications are explored.
学科领域Chemistry; Materials Science
DOI10.1039/c2jm00040g
收录类别SCI
WOS记录号WOS:000302367500009
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被引频次:70[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224306
专题多学科研究中心
核技术应用研究中心
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GB/T 7714
Sun, LW,Shi, HQ,Li, WN,et al. Lanthanum-doped ZnO quantum dots with greatly enhanced fluorescent quantum yield[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(17):8221-8227.
APA Sun, LW.,Shi, HQ.,Li, WN.,Xiao, HM.,Fu, SY.,...&李卓昕.(2012).Lanthanum-doped ZnO quantum dots with greatly enhanced fluorescent quantum yield.JOURNAL OF MATERIALS CHEMISTRY,22(17),8221-8227.
MLA Sun, LW,et al."Lanthanum-doped ZnO quantum dots with greatly enhanced fluorescent quantum yield".JOURNAL OF MATERIALS CHEMISTRY 22.17(2012):8221-8227.
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