Synthesis and photoluminescence properties of high-quality CdSe quantum dot in liquid paraffin

Author

Jun Liu ; Shuijun Gu ; Kaiyu Pan ; Baoluo Gu ; HanJiang Lai ; Hongliang Zhou ; Chaoqi He ; Huijun Zhang

Author_Institution

Xiaoshan No. 1 Hosp., Dept. of Clinical Lab., Hangzhou Normal Univ., Hangzhou, China

Volume

6

Issue

11

fYear

2011

Firstpage

964

Lastpage

966

Abstract

High-quality cadmium selenide (CdSe) quantum dots (QDs) were synthesised in liquid paraffin with a mixture of octadecylamine and trioctylphosphine oxide as stabilising ligands. The synthesised CdSe QDs were characterised by ultraviolet-visible absorption and photoluminescence spectroscopy, transmission electron microscopy and selected area electron diffraction techniques. Compared with CdSe QDs synthesised in liquid paraffin stabilising with only oleic acid, CdSe QDs synthesised by this new route possess higher quantum yields, more symmetric and narrower emission spectra. The new route enables us to achieve high-quality CdSe QDs in less expensive solvent, liquid paraffin.

Keywords

II-VI semiconductors; cadmium compounds; electron diffraction; mixtures; photoluminescence; semiconductor growth; semiconductor quantum dots; transmission electron microscopy; ultraviolet spectra; visible spectra; wide band gap semiconductors; CdSe; high-quality cadmium selenide quantum dots; liquid paraffin; mixtures; octadecylamine oxide; oleic acid; photoluminescence properties; selected area electron diffraction; stabilising ligands; transmission electron microscopy; trioctylphosphine oxide; ultraviolet-visible absorption spectroscopy;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2011.0439

Filename

6096514