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Synthesis and Luminescence Properties of Er3+ Doped Y(OH)3, NH4Y3F10, and YF3 Nanocrystals

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Abstract:

Y(OH)3:Er3+ nanowires were synthesized by a hydrothermal method. Y(OH)3:Er3+ can convert into NH4Y3F10:Er3+ after fluorization, and NH4Y3F10:Er3+ can convert into YF3:Er3+ after being annealed. The structures of obtained Y(OH)3:Er3+, NH4Y3F10:Er3+, and YF3:Er3+ samples were pure hexagonal, cubic, and orthorhombic phase, respectively. Under 378-nm excitation, the three samples showed similar features. The 2H9/24I15/2, 4F3/2(4F5/2) → 4I15/2, and 4S3/24I15/2 were observed, and the most intense peak was centered at 436 nm [4F3/2(4F5/2) → 4I15/2]. Under 980-nm excitation, only the upconversion emissions from NH4Y3F10:Er3+ and YF3:Er3+ were observed. These emissions come from the following transitions: 2H11/24I15/2, 4S3/24I15/2, and 4F9/24I15/2. The upconversion mechanism is discussed in detail.

Keywords: CROSS RELAXATION; ENERGY TRANSFER; LUMINESCENCE; NANOCRYSTALS; RARE EARTH

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2010.2118

Publication date: 2010-03-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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