DocumentCode
3611198
Title
Upconversion Emission Modification and White Light Generation in NaYF 4:Yb 3+, Er 3+, Tm 3+ Nanocrystals/Opal Photonic Crystal Composites
Author
Yang, Z.W. ; Wang, Y.D. ; Liao, J.Y. ; Yang, J.Z. ; Qiu, J.B. ; Song, Z.G.
Author_Institution
Coll. of Mater. Sci. & Eng., Kunming Univ. of Sci. & Technol., Kunming, China
Volume
7
Issue
6
fYear
2015
Firstpage
1
Lastpage
8
Abstract
In this paper, we fabricated NaYF 4:Yb3+, Er3+, Tm3+ nanocrystal/opal photonic crystal composites by depositing NaYF 4:Yb3+, Er3+, Tm3+ nanocrystals on the surface of opal photonic crystals, and we investigated the influence of photonic bandgaps on upconversion (UC) emission properties of NaYF 4:Yb3+, Er3+, Tm 3+ nanocrystals. When the photonic bandgaps overlapped with the UC emission bands of NaYF 4:Yb3+, Er3+, Tm3+ nanocrystals on the opal photonic crystal surfaces, the suppression or enhancement of UC emissions was observed due to the Bragg reflection effect of photonic crystal, resulting in the modification of red, green, and blue UC emissions. Thus, white UC emission was realized.
Keywords
composite materials; erbium; nanostructured materials; photoluminescence; photonic band gap; photonic crystals; sodium compounds; thulium; ytterbium; yttrium compounds; Bragg reflection effect; NaYF4:Yb3+,Er3+,Tm3+; blue UC emission; green UC emission; nanocrystal/opal photonic crystal composites; photonic bandgaps; red UC emission; upconversion emission modification; white UC emission; white light generation; Erbium; Nanocrystals; Optical imaging; Optical variables measurement; Photonic band gap; Yttrium; Optical materials; luminescence; photonic crystal; surface properties;
fLanguage
English
Journal_Title
Photonics Journal, IEEE
Publisher
ieee
ISSN
1943-0655
Type
jour
DOI
10.1109/JPHOT.2015.2500886
Filename
7335702
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