PHOTONIC CRYSTAL SURFACE ENHANCED UPCONVERSION EMISSION OFYF3:Yb3+,Er3+NANOPARTICLES

Bo Shao, Zhengwen Yang (), Jun Li, Jiayan Liao, Shenfeng Lai, Jianbei Qiu, Zhiguo Song, Yong Yang and Dacheng Zhou
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Bo Shao: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
Zhengwen Yang: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
Jun Li: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
Jiayan Liao: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
Shenfeng Lai: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
Jianbei Qiu: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
Zhiguo Song: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
Yong Yang: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
Dacheng Zhou: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China

Surface Review and Letters (SRL), 2015, vol. 22, issue 01, 1-6

Abstract: The opal photonic crystals made of polystyrene microspheres with 155, 230, 270 or 410 nm in diameter were used to enhance upconversion (UC) emission ofYF3:Yb3+,Er3+nanoparticles, respectively. The red or green UC emission ofYF3:Yb3+,Er3+nanoparticles can be selectively enhanced when the red or green UC emission wavelength overlapped with the photonic bandgaps of opals, which is attributed to Bragg reflection of photonic bandgap. In addition, when the 980 nm excitation light wavelength was in the region of the photonic bandgap, red and green UC emissions ofYF3:Yb3+,Er3+nanoparticles were enhanced due to the enhancement of excitation field.

Keywords: Yb3+/Er3+co-dopedYF3nanoparticles; photonic bandgap; enhancement; photonic crystal surface (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1142/S0218625X15500109

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