Greatly enhanced and controlled manganese photoluminescence in water-soluble ZnCdS:Mn/ZnS core/shell quantum dots

Zhen Qian Chen; Chao Lian; Dong Zhou; Yang Xiang; Ming Wang; Min Ke; Liang Bo Liang; Xue Feng Yu

doi:10.1016/j.cplett.2010.02.002

Greatly enhanced and controlled manganese photoluminescence in water-soluble ZnCdS:Mn/ZnS core/shell quantum dots

Zhen Qian Chen, Chao Lian, Dong Zhou, Yang Xiang, Ming Wang, Min Ke, Liang Bo Liang, Xue Feng Yu

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Stable and water-soluble ZnCdS:Mn/ZnS core/shell quantum dots (QDs) with quantum yields over 20% have been synthesized via a one-spot aqueous route. Compared with the ZnCdS:Mn cores, the ZnCdS:Mn/ZnS core/shell QDs exhibited approximately 21.0 times stronger photoluminescence due to the greatly decreased nonradiative decay rate. A corresponding synthetic mechanism for such enhancement is discussed in detail. Furthermore, the bandgap energy of the ZnCdS:Mn/ZnS QDs is tuned to a lower level by increasing the Cd concentration in the cores, and the applicability for preparing QD-LEDs with high lumen efficiency is also described.

Original language	English
Pages (from-to)	73-76
Number of pages	4
Journal	Chemical Physics Letters
Volume	488
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2010.02.002
State	Published - Mar 12 2010
Externally published	Yes

Funding

The authors thank financial support from the Natural Science Foundation of China ( 10874134 , 10904119 ), and the National Innovation Experiment Program for University Students ( 091048612 ) for support.

Funders	Funder number
National Natural Science Foundation of China	091048612, 10904119, 10874134

Access to Document

10.1016/j.cplett.2010.02.002

Cite this

@article{d8c90c1283b94ff3b2996be77c3881db,

title = "Greatly enhanced and controlled manganese photoluminescence in water-soluble ZnCdS:Mn/ZnS core/shell quantum dots",

abstract = "Stable and water-soluble ZnCdS:Mn/ZnS core/shell quantum dots (QDs) with quantum yields over 20% have been synthesized via a one-spot aqueous route. Compared with the ZnCdS:Mn cores, the ZnCdS:Mn/ZnS core/shell QDs exhibited approximately 21.0 times stronger photoluminescence due to the greatly decreased nonradiative decay rate. A corresponding synthetic mechanism for such enhancement is discussed in detail. Furthermore, the bandgap energy of the ZnCdS:Mn/ZnS QDs is tuned to a lower level by increasing the Cd concentration in the cores, and the applicability for preparing QD-LEDs with high lumen efficiency is also described.",

author = "Chen, {Zhen Qian} and Chao Lian and Dong Zhou and Yang Xiang and Ming Wang and Min Ke and Liang, {Liang Bo} and Yu, {Xue Feng}",

year = "2010",

month = mar,

day = "12",

doi = "10.1016/j.cplett.2010.02.002",

language = "English",

volume = "488",

pages = "73--76",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

number = "1-3",

}

TY - JOUR

T1 - Greatly enhanced and controlled manganese photoluminescence in water-soluble ZnCdS:Mn/ZnS core/shell quantum dots

AU - Chen, Zhen Qian

AU - Lian, Chao

AU - Zhou, Dong

AU - Xiang, Yang

AU - Wang, Ming

AU - Ke, Min

AU - Liang, Liang Bo

AU - Yu, Xue Feng

PY - 2010/3/12

Y1 - 2010/3/12

N2 - Stable and water-soluble ZnCdS:Mn/ZnS core/shell quantum dots (QDs) with quantum yields over 20% have been synthesized via a one-spot aqueous route. Compared with the ZnCdS:Mn cores, the ZnCdS:Mn/ZnS core/shell QDs exhibited approximately 21.0 times stronger photoluminescence due to the greatly decreased nonradiative decay rate. A corresponding synthetic mechanism for such enhancement is discussed in detail. Furthermore, the bandgap energy of the ZnCdS:Mn/ZnS QDs is tuned to a lower level by increasing the Cd concentration in the cores, and the applicability for preparing QD-LEDs with high lumen efficiency is also described.

AB - Stable and water-soluble ZnCdS:Mn/ZnS core/shell quantum dots (QDs) with quantum yields over 20% have been synthesized via a one-spot aqueous route. Compared with the ZnCdS:Mn cores, the ZnCdS:Mn/ZnS core/shell QDs exhibited approximately 21.0 times stronger photoluminescence due to the greatly decreased nonradiative decay rate. A corresponding synthetic mechanism for such enhancement is discussed in detail. Furthermore, the bandgap energy of the ZnCdS:Mn/ZnS QDs is tuned to a lower level by increasing the Cd concentration in the cores, and the applicability for preparing QD-LEDs with high lumen efficiency is also described.

UR - http://www.scopus.com/inward/record.url?scp=77950515993&partnerID=8YFLogxK

U2 - 10.1016/j.cplett.2010.02.002

DO - 10.1016/j.cplett.2010.02.002

M3 - Article

AN - SCOPUS:77950515993

SN - 0009-2614

VL - 488

SP - 73

EP - 76

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Greatly enhanced and controlled manganese photoluminescence in water-soluble ZnCdS:Mn/ZnS core/shell quantum dots

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this