Continuous White Luminescence of ZnS:Pb2+ and Core/Shell ZnS:Pb2+/ZnS Nanocrystals

被引：6
|
作者：
Zhang, Xiaosong [1 ,2 ]
Li, Lan [1 ]
Ji, Ting [3 ]
Dong, Dongqing [1 ]
Zhang, Gaofeng [1 ]
Li, Kaixiang [1 ]
机构：
[1] Tianjin Univ Technol, Inst Mat Phys, Tianjin 300384, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[3] Tianjin Xin Hua Staff & Workers Univ, Tianjin 300040, Peoples R China
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2011年 / 11卷 / 11期
基金：
中国国家自然科学基金;
关键词：
ZnS:Pb2+; Nanocrystals; ZnS:Pb2+/ZnS; Core/Shell; White Luminescence; Photoluminescence; ZNS; GROWTH; FLUORESCENCE;
D O I：
10.1166/jnn.2011.5237
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
High-quality water-soluble ZnS:Pb2+ nanocrystals were synthesized via a simple chemical co-depositing method. The as-synthesized ZnS:Pb2+ nanocrystals show high monodispersity and crystallinity with a narrow size distribution (3.2 +/- 0.4 nm). ZnS:Pb2+/ZnS core/shell structures were also obtained by coating a ZnS shell displaying significantly enhanced photoluminescence (PL) intensity and photostability. For the ZnS:Pb2+/ZnS samples the position of emission spectrum shows a red-shift of approximately 10 nm, which produces a fairly pure white emission with Commission Internationale de l'Eclairage (CIE) coordinates of (0.31, 0.33). These phenomena are explained by a model of multiple Pb2+ luminescent centers.
引用
收藏
页码：9562 / 9565
页数：4
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