Journal
CERAMICS INTERNATIONAL
Volume 40, Issue 5, Pages 7363-7366Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.12.080
Keywords
Phosphor; Up-conversion; Energy transfer
Categories
Funding
- Northwest University
- National Natural Science Foundation of China [11274251, 31100288]
- Ph.D. Programs Foundation of Ministry of Education of China [20136101110017]
- Technology Foundation for Selected Overseas Chinese Scholar
- Ministry of Personnel of China (excellent)
- Foundation of Key Laboratory of Photoelectric Technology in Shaanxi Province [12JS094]
- Natural Science Foundation of Hubei Province [2010CDB01607]
- Foundation of Shaanxi Educational Committee [11JK0528]
- Open Foundation of Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base) in Shaanxi Province [ZS11010]
- Korea Research Foundation [2010-0022540]
- National Core Research Center Program from MEST
- National Core Research Center Program from NRF [2010-0001-226]
- National Research Foundation of Korea [2010-0022540] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A class of Yb3+/Ho3+ ions co-doped CaLa2ZnO5 (CLZ) up-conversion (UC) phosphors were synthesized by sol gel method. Under 980 nm excitation, UC spectra consist of two prominent emission bands centered at 545 and 662 nm originating from F-5(4), S-5(2)-> I-5(8) and F-5(5)-> I-5(8) transitions of Ho3+ ion, respectively. The UC spectra as a function of the concentration of the dopants were also investigated to determine the optimal composition. The possible UC mechanism was proposed, and lifetime measurements were also carried out to support our proposal. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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