Hydrothermal Synthesis Y2O3:Yb3+/Er3+ Nanospheres with Upconversion Luminescence from Green to Red
Jie Yang,
Jiali Gu,
Renhe Yang,
Qinyu Shang,
Jun Yang
Issue:
Volume 2, Issue 2, December 2016
Pages:
41-45
Received:
29 September 2016
Accepted:
19 October 2016
Published:
3 November 2016
DOI:
10.11648/j.nsnm.20160202.11
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Abstract: Well-dispersed, uniform Y2O3:Yb3+/Er3+ nanospheres have been successfully prepared at 160°C via a facile hydrothermal route without using any templates, followed by a subsequent calcination process. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and upconversion photoluminescence spectra were employed to characterize the samples. The SEM and TEM images indicate that the samples consist of separated spheres with a mean diameter of about 75 nm. Under the excitation of 980-nm laser, the Y2O3:Yb3+/Er3+ phosphors exhibit bright upconversion photoluminescence from green to red with different Yb3+ content, which is easily observed by our naked eyes. Due to multicolor tunable luminescence, ideal spherical shape, and cheap materials of Y2O3 host, the as-prepared phosphors are potentially applied for color displays, back light, UC lasers, photonics, and biomedicine.
Abstract: Well-dispersed, uniform Y2O3:Yb3+/Er3+ nanospheres have been successfully prepared at 160°C via a facile hydrothermal route without using any templates, followed by a subsequent calcination process. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and upconversion photoluminescence spectra were employed to characte...
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