PHOTONIC CRYSTAL SURFACE ENHANCED UPCONVERSION EMISSION OF YF3:Yb3+, Er3+ NANOPARTICLES

被引：2
|
作者：
Shao, Bo [1 ]
Yang, Zhengwen [1 ]
Li, Jun [1 ]
Liao, Jiayan [1 ]
Lai, Shenfeng [1 ]
Qiu, Jianbei [1 ]
Song, Zhiguo [1 ]
Yang, Yong [1 ]
Zhou, Dacheng [1 ]
机构：
[1] Kunming Univ Sci & Technol, Coll Mat Sci & Engn, Kunming 650093, Peoples R China
来源：
SURFACE REVIEW AND LETTERS | 2015年 / 22卷 / 01期
关键词：
Yb3+/Er3+ co-doped YF3 nanoparticles; photonic bandgap; enhancement; photonic crystal surface; NANOCRYSTALS; STRATEGY;
D O I：
10.1142/S0218625X15500109
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The opal photonic crystals made of polystyrene microspheres with 155, 230, 270 or 410 nm in diameter were used to enhance upconversion (UC) emission of YF3:Yb3+, Er3+ nanoparticles, respectively. The red or green UC emission of YF3: 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 relection 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 of YF3:Yb3+, Er3+ nanoparticles were enhanced due to the enhancement of excitation field.
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页数：6
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