Green Synthesis of CdSe Colloidal Nanocrystals with Strong Green Emission by the Sol-Gel Method

被引：28
作者：
Gaeeni, Mohammad Reza [1 ]
Tohidian, Marzieh [2 ]
Mapes-Ara, Mohammad [1 ]
机构：
[1] Kharazmi Univ, Dept Phys, Photon Lab, Tehran, Iran
[2] Univ Tehran Med Sci, Fac Med, Tehran, Iran
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2014年 / 53卷 / 18期
关键词：
QUANTUM DOTS; OPTICAL-PROPERTIES; THIN-FILMS; PHOTOLUMINESCENCE; NANOSTRUCTURES; NANOPARTICLES; SPECTROSCOPY; MANIPULATION; DEPOSITION; MORPHOLOGY;
D O I：
10.1021/ie5004398
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this paper, high-quality CdSe colloidal nanocrystals were synthesized by an improved Sol-Gel green technique. These colloidal nanocrystals were characterized by different techniques: Transmission Electron Microscopy (TEM) showed that the diameter of colloidal nanocrystals is about 3 nm; X-ray diffraction (XRD) demonstrated that CdSe colloidal nanocrystals formed in cubic phase; Fourier Transform Infrared spectroscopy (FT-IR) was employed to study the chemical compounds of as-prepared sol; UV-visible absorption spectroscopy was used to evaluate optical properties of prepared CdSe colloidal nanocrystals, which indicated that the absorption peak is around 500 nm; Photoluminescence (PL) spectroscopy demonstrated that quantum yields for colloidal nanocrystals are 50.2% with 440 nm excitation wavelengths. Experimental observation has shown that highly stable CdSe colloidal nanocrystals with a strong green emission were synthesized. The mentioned optical properties have not been reported before.
引用
收藏
页码：7598 / 7603
页数：6
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