Investigation of 515 nm green-light emission for full color emission LaAlO3 phosphor with varied valence Eu
- 1. School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384 (China)
- 2. Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China)
- 3. Key Laboratory of Display Materials and Photoelectric Devices, Tianjin University of Technology, Ministry of Education, Tianjin 300384 (China)
Description
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. - Research Highlights: → A white-light is achieved from valence-mixed Eu in full-color LaAlO3. → A unique green-light emission at 515 nm is examined by spectrum and decay time. → The energy transfer happens in between di- and tri- valent Eu and host as well. → We propose the 5D2-7F3 transition for trivalent Eu leads to that green emission.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jlumin.2011.01.020Additional details
Identifiers
- DOI
- 10.1016/j.jlumin.2011.01.020;
- PII
- S0022-2313(11)00025-1;
Publishing Information
- Journal Title
- Journal of Luminescence
- Journal Volume
- 131
- Journal Issue
- 5
- Journal Page Range
- p. 1048-1051
- ISSN
- 0022-2313
- CODEN
- JLUMA8
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 42082964
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINATES; DECAY; DOPED MATERIALS; ENERGY TRANSFER; EUROPIUM IONS; LANTHANUM COMPOUNDS; LIFETIME; PHOTOLUMINESCENCE; VALENCE
- Descriptors DEC
- ALUMINIUM COMPOUNDS; CHARGED PARTICLES; EMISSION; IONS; LUMINESCENCE; MATERIALS; OXYGEN COMPOUNDS; PHOTON EMISSION; RARE EARTH COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.