Enhanced red-emitting phosphor Na2Ca3Si2O8:Eu3+ by charge compensation |
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| Authors: | Yinrong Fu Shaoan Zhang Yihua Hu |
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| Affiliation: | 1.School of Physics and Optoelectronic Engineering,Guangdong University of Technology,Guangzhou,People’s Republic of China;2.School of Physics and Electronic Engineering,Hanshan Normal University,Chaozhou,People’s Republic of China |
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| Abstract: | A series of novel red-emitting Na2Ca3???x Si2O8:xEu3+ phosphors were synthesized by solid state reactions. The phosphors can strongly absorb 395 nm light, and show red emission with a good color purity. The excitation and emission spectra properties of Na2Ca3Si2O8:Eu3+ were characterized. Na2Ca3Si2O8:Eu3+ with self-compensated and alkali metal ions charge compensated approaches (2Ca2+→Eu3+ + M+, M?=?Li+, Na+, K+) have investigated, which found that the red emission of luminescent intensity can be greatly enhanced, and shows superior luminescent property to the commercial Y203S:Eu3+. The present work implies that the efficient charge compensated phosphors are promising candidates as red-emitting phosphor for w-LEDs. |
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