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Composite materials with europium (III) ion-doped zirconia (ZrO2:Eu3+) infiltrated SnO2 inverse opal have been prepared by the liquid phase infiltration (LPI) process. The absolute reflectance spectra measurement for ZrO2:Eu3+ infiltrated SnO2 inverse opal showed photonic stop band due to three-dimensionally (3D) ordered structure. Photonic stop band of ZrO2:Eu3+ infiltrated SnO2 inverse opals was shifted to longer wavelength compared with SnO2 inverse opals due to the increase of average refractive index. The ZrO2:Eu3+ infiltrated SnO2 inverse opal showed stronger emission intensity than ZrO2:Eu3+ thin film without 3D ordered structure.
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Mizuhata et al. (2007) studied this question.
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