Preparation and Photoluminescence Properties of Gd2O3:Eu3+ Inverse Opal Photonic Crystals

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• 作者：Xuesong Qu ; Hyun Kyoung Yang ; Byung Kee Moon ; Byung Chun Choi ; Jung Hyun Jeong ; Kwang Ho Kim
• 刊名：Journal of Physical Chemistry C
• 出版年：2010
• 出版时间：December 2, 2010
• 年：2010
• 卷：114
• 期：47
• 页码：19891-19894
• 全文大小：238K
• 年卷期：v.114,no.47(December 2, 2010)
• ISSN：1932-7455

文摘

Eu³⁺-doped Gd₂O₃ inverse opal photonic crystals were successfully synthesized based on a self-assembly technique and a sol−gel method. The inverse opal Gd₂O₃:Eu³⁺ material exhibited a pronounced photonic stop band in the visible region. The effect of the stop band on the spontaneous emission of Eu³⁺ has been studied. Significant suppression of the emission was observed when the Eu³⁺ ions’ emission bands overlapped with the photonic stop band, whereas enhancement of the emission intensity was detected when the emission bands appeared at the long wavelength edge of the band gap.