تفاصيل الوثيقة

نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
Synthesis and Characterization of Mercaptoacetic Acid Capped Cadmium Sulphide Quantum Dots
Synthesis and Characterization of Mercaptoacetic Acid Capped Cadmium Sulphide Quantum Dots
 
الموضوع : physics 
لغة الوثيقة : الانجليزية 
المستخلص : This paper reports the facile synthesis and detailed characterization of mercaptoacetic acid capped cadmium sulphide (CdS) quantum dots using various cadmium precursors. The mercaptoacetic acid capped CdS quantum dots were prepared by facile and simple wet chemical method and characterized by several techniques such as energy dispersive spectroscopy (DS), X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, UV-vis. spectroscopy, photoluminescence spectroscopy, high-resolution transmission microscopy (HRTEM) and thremogravimetric analysis. The EDS studies revealed that the prepared quantum dots possess higher atomic percentage of sulfur compared to cadmium due to the coordination of thiolate to the quantum dots surfaces. The X-ray and absorption analyses exhibited that the size of quantum dots prepared by cadmium acetate is larger than the quantum dots prepared by cadmium chloride and cadmium nitrate. The increase in size can be attributed to the low stability constant of cadmium acetate in comparison with cadmium chloride and cadmium nitrate. The FTIR and thermogravimetric analysis showed that the nature of capping molecule on the surface of quantum dots are different depending on the cadmium precursors which affect the emission from CdS quantum dots. Photoemission spectroscopy revealed that the emission of quantum dots prepared by cadmium acetate has high intensity band edge emission along with low intensity trapping state emission. However the CdS quantum dots prepared by cadmium chloride and cadmium nitrate produced only trapping state emissions 
ردمد : 1533-4880 
اسم الدورية : JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 
المجلد : 15 
العدد : 12 
سنة النشر : 1435 هـ
2015 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Wednesday, August 16, 2017 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
S WagehWageh, S باحث رئيسيدكتوراه 
M MaizeMaize, M باحث مشاركدكتوراه 
.A.M DoniaDonia, A.M باحث مشاركدكتوراه 
A.A Al-Ghamdi,Al-Ghamdi, A.A باحث مشاركدكتوراه 
A umarumar, A باحث مشاركدكتوراه 

الملفات

اسم الملفالنوعالوصف
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