Microwave heating synthesis and visible upconversion luminescence of NaGdF₄:Yb, Er/reduced graphene oxide nanocomposites

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• 作者：Chaoqing Yang ; Liyana Ma ; Shanni Wu…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：27
• 期：11
• 页码：11720-11725
• 全文大小：1,226 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  
• 出版者：Springer New York
• ISSN：1573-482X
• 卷排序：27

文摘

A novel NaGdF₄:Yb, Er/reduced graphene oxide (NaGdF₄/rGO) nanocomposite have been successfully synthesized via a facile and environmentally-friendly microwave heating reaction. X-ray diffraction, scanning electron microscope, Fourier transform infrared spectroscopy, thermo-gravimetric analysis, and upconversion (UC) luminescence spectra were used to explain the morphology, microstructure and UC luminescence properties of NaGdF₄/rGO. The short rod-like NaGdF₄:Yb, Er nanoparticles with uniform size about 750 nm were attached on the surface of GO substrate. Microwave reaction time exerted a remarkable influence on the UC luminescence property and the microstructure of nanocomposite. Under the 980 nm excitation, the UC luminescence could not be detected in the sample with a microwave time of 30 min, however, the NaGdF₄/rGO with a microwave time of 120 min presented visible green UC luminescent. The possible energy transfer mechanism from the NaGdF₄:Yb, Er nanocrystals to the energy receptor in GO substrate was also investigated. The current work paves the way for their potential application in optoelectronic devices.