Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5402833 | Journal of Luminescence | 2009 | 4 Pages |
Abstract
Ca0.54Sr0.34â1.5xEu0.08Smx(MoO4)y (WO4)1ây red phosphors were prepared by solid-state reaction using Na+ as a charge compensator for light-emitting diodes (LED). The effects of Na+ concentration, synthesis temperature, reaction time and Eu3+ concentration were studied for the properties of luminescence and crystal structure of red phosphors. The results show that the optimum reaction condition is 6%, 900 °C, 2 h and 8%. The photoluminescence spectra show that red phosphors are effectively excited at 616 nm by 292, 395 and 465 nm. The wavelengths of 465 nm nicely match the widely applied emission wavelengths of blue LED chips.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Fa-bin Cao, Yan-wen Tian, Yong-jie Chen, Lin-jiu Xiao, Qian Wu,