期刊
OPTICAL MATERIALS
卷 75, 期 -, 页码 224-229出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2017.10.028
关键词
Inverse opal; WO3:Eu3+; Red luminescence; Modification
资金
- National Natural Science Foundation of China [51762029]
Blue light converted light-emitting diodes is of great significance as a candidate for next generation lighting. In this work, the WO3:Eu3+ inverse opal photonic crystals were prepared and their luminescence properties were studied. The results demonstrated that the main excitation peak of WO3:Eu3+ inverse opals were located at 465 nm. The red luminescence peak at the 613 nm was observed in the WO3:Eu3+ inverse opal upon 465 nm excitation, exhibiting better red color purity. The influence of photonic band gap on the photoluminescence of WO3:Eu3+ inverse opal was obtained. When the red luminescence peak is in the regions of the photonic band gap and the edge of the band-gap, the red luminescence suppression and enhancement was observed respectively. The WO3:Eu3+ inverse opals may be a promising candidate for the blue light converted LEDs. (C) 2017 Elsevier B.V. All rights reserved.
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