UPCONVERSION LUMINESCENCE ENHANCEMENT OF NaYF4:Yb3+, Er3+ NANOPARTICLES ON INVERSE OPAL SURFACE

LaPO 4 inverse opal photonic crystals with different photonic band gaps were fabricated by template-assisted method. The Yb 3+/ Er 3+ co-doped NaYF 4 nanoparticles were deposited on the surfaces of the inverse opals, and their up-conversion emission properties were investigated. The upconversion emissions of Yb 3+/ Er 3+ co-doped NaYF 4 nanoparticles on the inverse opal surfaces have been enhanced when the upconversion emission bands of the nanoparticles are in the range of photonic band gaps of the inverse opals, which is attributed to an efficient and selective reflection of photonic band gaps.

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Color Tunable and Upconversion Luminescence in Yb-Tm Co-Doped Yttrium Phosphate Inverse Opal Photonic Crystals

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2016.11802 ◽

2016 ◽

Vol 16 (4) ◽

pp. 3739-3743

Author(s):

Siqin Wang ◽

Jianbei Qiu ◽

Qi Wang ◽

Dacheng Zhou ◽

Zhengwen Yang

Keyword(s):

Photonic Crystals ◽

Upconversion Luminescence ◽

Reference Sample ◽

Blue Emission ◽

Upconversion Emission ◽

Band Gaps ◽

Inverse Opal ◽

Photonic Band Gaps ◽

Inverse Opals ◽

Photonic Band

For this paper, YPO4: Tm, Yb inverse opals with the photonic band gaps at 475 nm and 655 nm were prepared by polystyrene colloidal crystal templates. We investigated the influence of photonic band gaps on the Tm-Yb upconversion emission which was in the YPO4: Tm Yb inverse opal photonic crystals. Comparing with the reference sample, significant suppression of both the blue and red upconversion luminescence of Tm3+ ions were observed in the inverse opals. The color purity of the blue emission was improved in the inverse opal by the suppression of red upconversion emission. Additionally, mechanism of upconversion emission in the inverse opal was discussed. We believe that the present work will be valuable for not only the foundational study of upconversion emission modification but also the development of new optical devices in upconversion lighting and display.

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Upconversion emission properties of CeO2: Tm3+, Yb3+ inverse opal photonic crystals

Modern Physics Letters B ◽

10.1142/s0217984914502182 ◽

2014 ◽

Vol 28 (27) ◽

pp. 1450218

Author(s):

Gong Cheng ◽

Hangjun Wu ◽

Zhengwen Yang ◽

Jiayan Liao ◽

Shenfeng Lai ◽

...

Keyword(s):

Bragg Reflection ◽

Precursor Solution ◽

Upconversion Emission ◽

Inverse Opal ◽

Polystyrene Microspheres ◽

Inverse Opals ◽

Photon Trapping ◽

Lattice Planes ◽

Upconversion Emissions ◽

Photonic Band

The ordered and disordered templates were assembled by vertical deposition of polystyrene microspheres. The CeO 2: Tm 3+, Yb 3+ precursor solution was used to infiltrate into the voids of the ordered and disordered templates, respectively. Then the ordered and disordered templates were calcined at 950°C in an air furnace, and the CeO 2: Tm 3+, Yb 3+ inverse opals were obtained. The upconversion emissions from CeO 2: Tm 3+, Yb 3+ inverse opals were suppressed due to the photon trapping caused by Bragg reflection of lattice planes when the upconversion emission band was in the range of the photonic band gaps in the inverse opals.

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Preparation and Upconversion Luminescence Properties of Tb3+-Yb3+ Co-Doped Phosphate Inverse Opals

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.311-313.1227 ◽

2011 ◽

Vol 311-313 ◽

pp. 1227-1231

Author(s):

Kan Zhu ◽

Zheng Wen Yang ◽

Dong Yan ◽

Zhi Guo Song ◽

Da Cheng Zhou ◽

...

Keyword(s):

Band Gap ◽

Self Assembly ◽

Photonic Band Gap ◽

Upconversion Luminescence ◽

Sol Gel ◽

Inverse Opals ◽

Assembly Technique ◽

Photonic Band Gap Materials ◽

Photonic Band ◽

Co Doped

Upconversion (UC) luminescence photonic band gap materials Tb3+-Yb3+ co-doped phosphate inverse opal photonic crystals were prepared by a self-assembly technique in combination with a sol-gel method. The effect of photonic band gap on UC luminescence was investigated in inverse opals. Effective suppression of the UC luminescence was inspected if the photonic band gap overlapped with the emission band of Tb3+ ions.

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