Core-shell ZnSe-CdSe quantum dots: a facile approach via decomposition of cyclohexeno-1,2,3-selenadiazole

被引：16

作者：

Bhanoth, Sreenu ^{[1
]}

More, Priyesh V. ^{[1
]}

Jadhav, Aditi ^{[1
]}

Khanna, Pawan K. ^{[1
]}

机构：

[1] Govt India, Def Inst Adv Technol, Dept Appl Chem, Nanochem Nanomat Lab, Pune 411025, Maharashtra, India

来源：

RSC ADVANCES | 2014年 / 4卷 / 34期

关键词：

ELECTRON INJECTION; CHARGE SEPARATION; SOLAR-CELLS; NANOCRYSTALS; SIZE; NANOPARTICLES; ENERGY; ROUTE;

D O I：

10.1039/c4ra00676c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

For the first time ever cyclohexeno-1,2,3-selenadiazole (SDZ) has been employed for the synthesis of core-shell ZnSe-CdSe quantum dots thus promoting an eco-friendly and reasonably less toxic synthesis method for such quantum dot hetero- structures. The synthesized dark-red colored core-shell structures were characterized by UV-Visible and photoluminescence (PL) spectroscopy to examine their band-gap. The absorption and emission spectra also showed gradual red-shifts in wavelength with respect to zinc selenide (core). Also, the band-gap of such core-shell quantum dots can be tuned by varying the shell layer thickness and/or particle size. The findings from the XRD analysis, near-to-homogenous particle size distribution, formation of a decent nano-crystalline product and a good agreement with Vegard's law, signify that the present synthesis approach could be highly effective for the precise tailoring of core-shell QDs.

引用

页码：17526 / 17532

页数：7

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