Document Detail


Color tuning of direct white light of lanthanum aluminate with mixed-valence europium.
MedLine Citation:
PMID:  20469838     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The generation of direct white-light emission of the coexisting valence-varied europium-lanthanum aluminate through substitution of cations into the host and its resultant adjustment of the energy transfer have been presented. With respect to La(0.99-x)Sr(x)AlO(3-delta):Eu(0.01) and La(0.994)Al(1-x)O(3-delta):Eu(0.006), and Mn(x), Li(0.012), the green-light emission positioned at 515 nm plays a key role to color mix for white light and can be efficiently tuned by adjusting the transfer of energy and relevant transition emissions between the luminous centers of Eu(2+) and Eu(3+)/Mn(2+), via varying amounts of dopants. Direct white-light emission with optimized values of 86 for the color rendering index and 5091 K for the correlated color temperature has been achieved for lanthanum aluminate by this mixed-valence means.
Authors:
Zhi-Yong Mao; Da-Jian Wang
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Inorganic chemistry     Volume:  49     ISSN:  1520-510X     ISO Abbreviation:  Inorg Chem     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-01     Completed Date:  2010-09-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0366543     Medline TA:  Inorg Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4922-7     Citation Subset:  -    
Affiliation:
School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, People's Republic of China.
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