Issue 47, 2010

Size- and shape-controlled synthesis of ZnSenanocrystals using SeO2 as selenium precursor

Abstract

Here we report a low-cost and “green” phosphine-free route for the size- and shape-controlled synthesis of high-quality zinc blende (cubic) ZnSe nanocrystals. To avoid the use of expensive and toxic solvents such as trioctylphosphine (TOP) or tributylphosphine (TBP), SeO2 was dispersed in 1-octadecene (ODE) as a chalcogen precursor. It has been found that the temperature and the surface ligand influenced the nucleation, the reaction speed and the formation of different shapes. Absorption spectroscopy, fluorescence spectroscopy, powder X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used for the characterization of the as-synthesized ZnSe nanocrystals. The size-dependent photoluminescence (PL) range of the as-prepared ZnSe nanocrystals was between 390 and 450 nm, with the PL full width at half-maximum (FWHM) well controlled between 14 and 18 nm and PL quantum yields reached up to 40% at room temperature. Moreover, this new selenium precursor can be used to form tetrapod-shaped ZnSe nanocrystals when zinc acetylacetonate was introduced as the zinc precursor with a one-pot method.

Graphical abstract: Size- and shape-controlled synthesis of ZnSe nanocrystals using SeO2 as selenium precursor

Supplementary files

Article information

Article type
Paper
Submitted
22 Jun 2010
Accepted
14 Sep 2010
First published
26 Oct 2010

Dalton Trans., 2010,39, 11432-11438

Size- and shape-controlled synthesis of ZnSe nanocrystals using SeO2 as selenium precursor

H. Shen, J. Z. Niu, H. Wang, X. Li, L. S. Li and X. Chen, Dalton Trans., 2010, 39, 11432 DOI: 10.1039/C0DT00709A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements