Preparation and fluorescence properties of novel alkaline earth silicate phosphors by reduction treatment of Eu3+ to Eu2+
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- KAMEI Shinnosuke
- Department of Materials and Applied Chemistry, Faculty of Science and Engineering, Nihon University
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- KOJIMA Yoshiyuki
- Department of Materials and Applied Chemistry, Faculty of Science and Engineering, Nihon University
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- NISHIMIYA Nobuyuki
- Department of Materials and Applied Chemistry, Faculty of Science and Engineering, Nihon University
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Abstract
The synthesis and emission spectrum control of novel Eu2+-activated amorphous alkaline earth silicate phosphors from the reduction of Eu3+-activated amorphous alkaline earth silicate phosphors is reported. The as-prepared Eu3+-activated amorphous alkaline earth silicate phosphors emitted red. Reduction using Ni-metal powder in a H2 (5%)/Ar (95%) atmosphere produced Eu2+-activated amorphous barium silicate phosphor that emitted green. Eu2+-activated amorphous calcium silicate was produced by reduction with ammonium chloride in air and emitted purple-blue. It was possible to control the emission spectrum by changing the reduction time. These results suggest the possibility to use three-band type phosphors for the fabrication of white light emitting diodes using one host crystal.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 118 (1380), 758-761, 2010
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680262359296
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- NII Article ID
- 130000304633
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- NII Book ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 10770881
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed