Issue 44, 2011
From the journal:

Journal of Materials Chemistry

White light emission from Mn-doped ZnSe d-dots synthesized continuously in microfluidic reactors

Pengtao Shao,a   Hongzhi Wang,*a   Qinghong Zhangb  and  Yaogang Li*b  

* Corresponding authors

a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, People's Republic of China
E-mail: wanghz@dhu.edu.cn
Fax: +86-21-67792855
Tel: +86-21-67792881

b College of Materials Science and Engineering, Donghua University, Shanghai, People's Republic of China
E-mail: yaogang_li@dhu.edu.cn
Fax: +86-21-67792340
Tel: +86-21-67792342

Abstract

Mn-doped ZnSe nanocrystals (Mn:ZnSe d-dots) that emit white light were synthesized in aqueous media in microfluidic reactors. White light emission from Mn:ZnSe d-dots was a result of combined emission of blue light (emission from non-coordinated surface selenium sites) and yellow light (4T1 → 6A1 emission from Mn2+ ions). Emission from non-coordinated surface selenium sites was realized by adjusting the ratio of the flow volumes of [Zn]/[Mn] and the mass of stabilizer added. Photoluminescence from the Mn:ZnSe d-dots was easily tuned from 580 to 602 nm by regulating flow volume. Under the optimal experimental conditions, Mn:ZnSe d-dots that emit white light with a quantum yield of about 10.2% were fabricated.

Graphical abstract: White light emission from Mn-doped ZnSe d-dots synthesized continuously in microfluidic reactors

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Article information

DOI
https://doi.org/10.1039/C1JM12128F
Article type
Paper
Submitted
13 May 2011
Accepted
05 Sep 2011
First published
13 Oct 2011

J. Mater. Chem., 2011,21, 17972-17977

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White light emission from Mn-doped ZnSe d-dots synthesized continuously in microfluidic reactors

P. Shao, H. Wang, Q. Zhang and Y. Li, J. Mater. Chem., 2011, 21, 17972 DOI: 10.1039/C1JM12128F

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