Synthesis of carbon nanotube-cadmium selenide luminescent nanocomposites using electrophoretic deposition technique

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• 作者：Behzad Karimi ; Amir Masoud Arabi…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：28
• 期：2
• 页码：1247-1252
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1573-482X
• 卷排序：28

文摘

In this research, nanocomposites containing carbon nanotube (CNT)-cadmium selenide (CdSe) quantum dots (QDs) were synthesized and deposited using electrophoretic deposition technique for optical sensors and displays. The composite was first synthesized using silane grafted cadmium selenide and different concentrations of carbon nanotubes, and then deposited on the aluminum electrodes via electrophoresis method. Fourier transformation infrared confirmed the formation of CNT–CdSe nanocomposites. Microstructural investigations using scanning and transmission electron microscopy also showed the presence of the QDs on the surface of carbon nanotubes (CNTs), enhancing their surface roughness. Increasing the applied voltage from 120 to 240 V resulted in the variation of deposition yield in the range of 0.0005–0.0035 g.cm−2. The deposition yield was first increased and then decreased in all the samples. Photoluminescence studies revealed that the deposited composite has a distinct emission peak in the range of 485–495 nm (green region) under 360 nm illumination depending on the concentration of CNTs. It can be concluded that the deposited composite may be used in field emission displays due to its high efficiency emission in the presence of CNTs.