On the enhancement of luminescence efficiency of Y2O3 : Eu3+ red phosphor by incorporating (Al3+, B3+) in the host lattice
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
On the enhancement of luminescence efficiency of Y2O3 : Eu3+ red phosphor by incorporating (Al3+, B3+) in the host lattice
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| Creator |
Debnath, Radhaballabh
Nayak, A Ghosh, A |
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| Subject |
Processing Science
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| Description |
Incorporation of trace (Al3+, B3+) in Y2O3 lattice, causes an enhancement of efficiency of both D-5(0) -> F-7(2) luminescence of Eu3+ and its excitation in Y2O3:Eu3+ red phosphor. Enhancement of excitation remains restricted around the (Eu3+ - O2-) C-T band. The D-5(0) -> F-7(2) decay characteristics and the build-up time of the D-5(0) excited state of Eu3+ also change due to such incorporation, although the luminescence pattern remains unchanged. The result suggests a change in polarity of the host rather than the site symmetry of Eu3+ by the hetero-cations. Calculation of the Judd-Ofelt parameters of the D-5(0) -> F-7(2) transition of Eu3+ gives similar results.
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| Publisher |
Elsevier
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| Date |
2007-08-27
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/382/1/Chem_Phys_Lett_444_(2007)_324%E2%80%93327.pdf
Debnath, Radhaballabh and Nayak, A and Ghosh, A (2007) On the enhancement of luminescence efficiency of Y2O3 : Eu3+ red phosphor by incorporating (Al3+, B3+) in the host lattice. Chemical Physics Letters, 444 (4-6). pp. 324-327. ISSN 0009-2614 |
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| Relation |
http://cgcri.csircentral.net/382/
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