| Autor: |
Da Cheng Zhou, Zheng Wen Yang, Ji Zhou, Jian Bei Qiu, Zhao Yi Yin, Zhi Guo Song |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Advanced Materials Research. :1217-1221 |
| ISSN: |
1662-8985 |
| Popis: |
Inverse opal photonic crystals of Eu3+ doped LaPO4 (LaPO4: Eu）were prepared by a self-assembly technique in combination with a sol-gel method. In the preparation process, Eu3+ doped LaPO4 precursors were filled into the interstices of the opal template assembled by monodispersive polystyrene microspheres. The polystyrene template was then removed by calcination at 650 °C for 5h, meanwhile, Eu3+doped LaPO4 inverse opal photonic crystal was formed. The photoluminescence (PL) from Eu3+ doped LaPO4 inverse opal photonic crystal was studied. The effect of the photonic stop-band on the spontaneous emission of Eu3+ has been observed in the inverse opal photonic crystals of Eu3+ doped LaPO4. Significant suppression of the emission was detected if the photonic band-gap overlaps with the Eu3+ ions emission band. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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