Synthesis and Luminescent Characteristics of (Ca4-x-yzBaySrz)(PO4)2O:xEu2+ Phosphors as a Potential Application for White-Light Emitting Diode
A novel tunable red- to yellow- emitting phosphor,(Ca4-x-y-zBaySrz)(PO4)2O:xEu2+is reported that displays a broad emission from 500 to 800nm, and its emission can be adjusted from red to yellow by changing Ba2+ and Sr2+ doping concentration. X-ray powder diffraction analysis confirmed the phase form...
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| Format: | Article |
| Language: | English |
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Adama Science and Technology University
2019-02-01
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| Series: | Ethiopian Journal of Science and Sustainable Development |
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| Online Access: | https://ejssd.astu.edu.et/index.php/EJSSD/article/view/66 |
| _version_ | 1818039095802200064 |
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| author | G. G. Deressa |
| author_facet | G. G. Deressa |
| author_sort | G. G. Deressa |
| collection | DOAJ |
| description | A novel tunable red- to yellow- emitting phosphor,(Ca4-x-y-zBaySrz)(PO4)2O:xEu2+is reported that displays a broad emission from 500 to 800nm, and its emission can be adjusted from red to yellow by changing Ba2+ and Sr2+ doping concentration. X-ray powder diffraction analysis confirmed the phase formation. Excitation and emissionspectra, and concentration dependence of emission intensity of the phosphor were investigated. The results showed that with increasing Ba2+/Sr2+ concentration, the emission peak wavelength blue-shift from 594 to 567 nm, and the color can be tuned from red to yellow. When single- phase (Ca2.95Ba0.5Sr0.5)(PO4)2O:0.05Eu2+phosphor is pumped by a blue InGaN light-emitting diode we obtain white light with color rending index between 80.0 and 88.0 and color temperatures between 3500 and 5450 K, suggesting that this material is competitive as a color conversion material for solid state lighting. |
| first_indexed | 2024-12-10T07:53:11Z |
| format | Article |
| id | doaj.art-f0d8fb2180af4b08a8f1d43f7d89a71e |
| institution | Directory Open Access Journal |
| issn | 1998-0531 2663-3205 |
| language | English |
| last_indexed | 2024-12-10T07:53:11Z |
| publishDate | 2019-02-01 |
| publisher | Adama Science and Technology University |
| record_format | Article |
| series | Ethiopian Journal of Science and Sustainable Development |
| spelling | doaj.art-f0d8fb2180af4b08a8f1d43f7d89a71e2022-12-22T01:56:59ZengAdama Science and Technology UniversityEthiopian Journal of Science and Sustainable Development1998-05312663-32052019-02-015110.20372/ejssdastu:v5.i1.2018.66Synthesis and Luminescent Characteristics of (Ca4-x-yzBaySrz)(PO4)2O:xEu2+ Phosphors as a Potential Application for White-Light Emitting DiodeG. G. Deressa0Adama Science and Technology UniversityA novel tunable red- to yellow- emitting phosphor,(Ca4-x-y-zBaySrz)(PO4)2O:xEu2+is reported that displays a broad emission from 500 to 800nm, and its emission can be adjusted from red to yellow by changing Ba2+ and Sr2+ doping concentration. X-ray powder diffraction analysis confirmed the phase formation. Excitation and emissionspectra, and concentration dependence of emission intensity of the phosphor were investigated. The results showed that with increasing Ba2+/Sr2+ concentration, the emission peak wavelength blue-shift from 594 to 567 nm, and the color can be tuned from red to yellow. When single- phase (Ca2.95Ba0.5Sr0.5)(PO4)2O:0.05Eu2+phosphor is pumped by a blue InGaN light-emitting diode we obtain white light with color rending index between 80.0 and 88.0 and color temperatures between 3500 and 5450 K, suggesting that this material is competitive as a color conversion material for solid state lighting.https://ejssd.astu.edu.et/index.php/EJSSD/article/view/66White light-emitting diode; Phosphors; Tunable emitting |
| spellingShingle | G. G. Deressa Synthesis and Luminescent Characteristics of (Ca4-x-yzBaySrz)(PO4)2O:xEu2+ Phosphors as a Potential Application for White-Light Emitting Diode Ethiopian Journal of Science and Sustainable Development White light-emitting diode; Phosphors; Tunable emitting |
| title | Synthesis and Luminescent Characteristics of (Ca4-x-yzBaySrz)(PO4)2O:xEu2+ Phosphors as a Potential Application for White-Light Emitting Diode |
| title_full | Synthesis and Luminescent Characteristics of (Ca4-x-yzBaySrz)(PO4)2O:xEu2+ Phosphors as a Potential Application for White-Light Emitting Diode |
| title_fullStr | Synthesis and Luminescent Characteristics of (Ca4-x-yzBaySrz)(PO4)2O:xEu2+ Phosphors as a Potential Application for White-Light Emitting Diode |
| title_full_unstemmed | Synthesis and Luminescent Characteristics of (Ca4-x-yzBaySrz)(PO4)2O:xEu2+ Phosphors as a Potential Application for White-Light Emitting Diode |
| title_short | Synthesis and Luminescent Characteristics of (Ca4-x-yzBaySrz)(PO4)2O:xEu2+ Phosphors as a Potential Application for White-Light Emitting Diode |
| title_sort | synthesis and luminescent characteristics of ca4 x yzbaysrz po4 2o xeu2 phosphors as a potential application for white light emitting diode |
| topic | White light-emitting diode; Phosphors; Tunable emitting |
| url | https://ejssd.astu.edu.et/index.php/EJSSD/article/view/66 |
| work_keys_str_mv | AT ggderessa synthesisandluminescentcharacteristicsofca4xyzbaysrzpo42oxeu2phosphorsasapotentialapplicationforwhitelightemittingdiode |