Highly efficient and well-resolved Mn2+ ion emission in MnS/ZnS/CdS quantum dots

	Highly efficient and well-resolved Mn2+ ion emission in MnS/ZnS/CdS quantum dots
	Cao S.; Zheng J.; Zhao J.; Wang L.; Gao F.; Wei G.; Zeng R.; Tian L.; Yang W.
	2013
发表期刊	Journal of Materials Chemistry C
ISSN	ISBN/20507534
卷号	1 期号:14
摘要	We demonstrate a strategy for the growth of Mn2+ ion doped cadmium based II-VI semiconductor quantum dots (QDs) with a designed buffer layer of ZnS (MnS/ZnS/CdS or Mn:CdS QDs), which aims to meet the challenge of obtaining highly efficient and well-resolved Mn2+ ion emission. First, small, high quality MnS cores are obtained by using thiols to replace conventional alkyl amines as capping ligands. Then a buffer layer of ZnS with a tailored thickness is introduced to the QDs before the growth of CdS shells to reduce the size mismatch between the Mn2+ (dopant) and Cd 2+ (host) ions. The fabricated MnS/ZnS/CdS core/shell QDs exhibit a high PL QY of up to 68%, which is the highest ever reported for any type of Mn2+ ion doped cadmium based II-VI semiconductor QD. The photoluminescence (PL) of the QDs consists of well-resolved Mn2+ ion emission without any detectable emission from the CdS band edge or surface defects. In addition, our MnS/ZnS/CdS QDs cannot only be made water-soluble, but can also be coated by ligands with short carbon chain lengths, nearly without cost to the PL QY, which could make them strong candidates for practical applications in biology/biomedicine and opto/electronic devices. The Royal Society of Chemistry 2013.
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/40688
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Cao S.,Zheng J.,Zhao J.,et al. Highly efficient and well-resolved Mn2+ ion emission in MnS/ZnS/CdS quantum dots[J]. Journal of Materials Chemistry C,2013,1(14).
APA	Cao S..,Zheng J..,Zhao J..,Wang L..,Gao F..,...&Yang W..(2013).Highly efficient and well-resolved Mn2+ ion emission in MnS/ZnS/CdS quantum dots.Journal of Materials Chemistry C,1(14).
MLA	Cao S.,et al."Highly efficient and well-resolved Mn2+ ion emission in MnS/ZnS/CdS quantum dots".Journal of Materials Chemistry C 1.14(2013).

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