Synthesis of CdTe Quantum Dots with Tunable Photoluminescence Using Tellurium Dioxide as Tellurium Source

A simple and convenient method has been developed for synthesis of water-soluble CdTe quantum dots （QDs） under ambient atmospheric conditions. In contrast to the traditional aqueous synthesis, green to red emitting CdTe QDs were prepared by using TeO2 to replace Te or AIzTe3 as tellurium source in t...

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Published inChinese journal of chemistry Vol. 30; no. 10; pp. 2440 - 2444
Main Author 刘声燕 王益林 杨昆 周立亚
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 01.10.2012
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
Subjects
CdTe
chemical synthesis
nanostructures
optical properties
photoluminescence spectroscopy
Quantum dots
Tellurium
二氧化碲
光致发光
可调
合成
碲化镉
荧光量子产率
量子点
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ISSN1001-604X
1614-7065
DOI10.1002/cjoc.201200601

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Summary:A simple and convenient method has been developed for synthesis of water-soluble CdTe quantum dots （QDs） under ambient atmospheric conditions. In contrast to the traditional aqueous synthesis, green to red emitting CdTe QDs were prepared by using TeO2 to replace Te or AIzTe3 as tellurium source in this method. The influences of ex- perimental variables, including pH value, 3-mercaptopropionic acid （MPA）/Cd and Te/Cd molar ratios, on the emis- sion peak and photoluminescence （PL） quantum yield （QY） of the obtained CdTe QDs have been systematically investigated. Experimental results indicate that green to red emitting CdTe QDs with a maximum photolumines- cence quantum yield of 35.4% can be prepared at pH 11.3 and rt（Cd） ： n（Te） ： n（MPA）= 1 ： 0.1 ： 1.7.
Bibliography:A simple and convenient method has been developed for synthesis of water-soluble CdTe quantum dots （QDs） under ambient atmospheric conditions. In contrast to the traditional aqueous synthesis, green to red emitting CdTe QDs were prepared by using TeO2 to replace Te or AIzTe3 as tellurium source in this method. The influences of ex- perimental variables, including pH value, 3-mercaptopropionic acid （MPA）/Cd and Te/Cd molar ratios, on the emis- sion peak and photoluminescence （PL） quantum yield （QY） of the obtained CdTe QDs have been systematically investigated. Experimental results indicate that green to red emitting CdTe QDs with a maximum photolumines- cence quantum yield of 35.4% can be prepared at pH 11.3 and rt（Cd） ： n（Te） ： n（MPA）= 1 ： 0.1 ： 1.7.
31-1547/O6
Liu, Shengyan Wang, Yilin Yang, Kun Zhou, Liya College of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
nanostructures, chemical synthesis, optical properties, photoluminescence spectroscopy
ArticleID:CJOC201200601
the Scientific Research Foundation of Guangxi University - No. XBZ110359
ark:/67375/WNG-KKJB5CWB-9
the National Natural Science Foundation of China - No. 61066006, 61264003
istex:CE405BFD710FDEF11015B3644B0C5483AF27E1A0
ObjectType-Article-1
SourceType-Scholarly Journals-1
content type line 14
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201200601