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Investigation of 515 nm green-light emission for full color emission LaAlO3 phosphor with varied valence Eu |
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| Authors: | Zhi-yong Mao Ying-chun Zhu Qin-ni Fei |
| Affiliation: | a The Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China b School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China c Key Laboratory of Display Materials and Photoelectric Devices, Tianjin University of Technology, Ministry of Education, Tianjin 300384, China |
| Abstract: | Photoluminescence and lifetime decay properties of varied valence Eu were employed to investigate the luminescence mechanism of green-light emission positioned at ∼515 nm for full color emission LaAlO3 phosphor co-doped with Eu2+ and Eu3+. The enhanced 5D2→7F3 transition emission of Eu3+ was assigned for this green emission. Energy transfer between Eu2+ and 5D2 level of Eu3+ was proposed, which results in the enhancement of 5D2→7F3 transition emission. In addition, energy transfer relations between host-Eu and charge transfer state (CTS)-Eu were also discussed associated with the PLE spectra and band schemes. |
| Keywords: | Full color LaAlO3 phosphor Energy transfer Lifetime |
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