Study Of The Effect Of Injection Currents On White Light Emission Of Ce-Doped Yag Phosphor Powder Prepared By Microwave Combustion
Cerium doped yttrium aluminum garnet (YAG:Ce+3) nanopowders have been synthesized using microwave combustion (MW) according to the formula, Y(3- 0.04)Al5O12: 0.04Ce+3 to produce white light emitting diode (WLED) by conversion from blue indium gallium nitride light emitting diode (InGaN LED, 445 nm)...
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| Language: | en |
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2019
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| Online Access: | http://eprints.usm.my/48879/1/ICoSeMT%202019%20ABSTRACT%20BOOK%20153.pdf http://eprints.usm.my/48879/ |
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| _version_ | 1834504236781535232 |
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| author | Abd, Husnen R. Hassan, Z. Ahmed, Naser M. |
| author_facet | Abd, Husnen R. Hassan, Z. Ahmed, Naser M. |
| author_sort | Abd, Husnen R. |
| building | Hamzah Sendut Library |
| collection | Institutional Repository |
| content_provider | Universiti Sains Malaysia |
| content_source | USM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Cerium doped yttrium aluminum garnet (YAG:Ce+3) nanopowders have been synthesized using microwave combustion (MW) according to the formula, Y(3- 0.04)Al5O12: 0.04Ce+3 to produce white light emitting diode (WLED) by conversion from blue indium gallium nitride light emitting diode (InGaN LED, 445 nm) chips; the whole process took only 20 min. Pure YAG phase was obtained at sintering temperature of 1050°C for 5 h with nonaggregated and spherical particles. Thermogravimetry and derivative thermogravimetry (TG/DTG), X-ray powder diffraction (XRPD), transmission electron microscope (TEM), electroluminescence (EL) emissions and standard CIE 1931 chromaticity diagrams have been used to characterize the samples. The highest WLED emission was achieved for the annealed YAG:Ce, together with proper color rendering index (CRI), and tunable correlated color temperature (CCT). Finally, we conclude that the decreasing EL intensity at increased injection current is caused by the thermal ionization from the 5d1 level to the conduction band. |
| format | Conference or Workshop Item |
| id | my.usm.eprints.48879 |
| institution | Universiti Sains Malaysia |
| language | en |
| publishDate | 2019 |
| record_format | eprints |
| spelling | my.usm.eprints.48879 http://eprints.usm.my/48879/ Study Of The Effect Of Injection Currents On White Light Emission Of Ce-Doped Yag Phosphor Powder Prepared By Microwave Combustion Abd, Husnen R. Hassan, Z. Ahmed, Naser M. QC1-999 Physics Cerium doped yttrium aluminum garnet (YAG:Ce+3) nanopowders have been synthesized using microwave combustion (MW) according to the formula, Y(3- 0.04)Al5O12: 0.04Ce+3 to produce white light emitting diode (WLED) by conversion from blue indium gallium nitride light emitting diode (InGaN LED, 445 nm) chips; the whole process took only 20 min. Pure YAG phase was obtained at sintering temperature of 1050°C for 5 h with nonaggregated and spherical particles. Thermogravimetry and derivative thermogravimetry (TG/DTG), X-ray powder diffraction (XRPD), transmission electron microscope (TEM), electroluminescence (EL) emissions and standard CIE 1931 chromaticity diagrams have been used to characterize the samples. The highest WLED emission was achieved for the annealed YAG:Ce, together with proper color rendering index (CRI), and tunable correlated color temperature (CCT). Finally, we conclude that the decreasing EL intensity at increased injection current is caused by the thermal ionization from the 5d1 level to the conduction band. 2019-04-30 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.usm.my/48879/1/ICoSeMT%202019%20ABSTRACT%20BOOK%20153.pdf Abd, Husnen R. and Hassan, Z. and Ahmed, Naser M. (2019) Study Of The Effect Of Injection Currents On White Light Emission Of Ce-Doped Yag Phosphor Powder Prepared By Microwave Combustion. In: International Conference On Semiconductor Materials Technology. |
| spellingShingle | QC1-999 Physics Abd, Husnen R. Hassan, Z. Ahmed, Naser M. Study Of The Effect Of Injection Currents On White Light Emission Of Ce-Doped Yag Phosphor Powder Prepared By Microwave Combustion |
| title | Study Of The Effect Of Injection Currents On White Light Emission Of Ce-Doped Yag Phosphor Powder Prepared By Microwave Combustion |
| title_full | Study Of The Effect Of Injection Currents On White Light Emission Of Ce-Doped Yag Phosphor Powder Prepared By Microwave Combustion |
| title_fullStr | Study Of The Effect Of Injection Currents On White Light Emission Of Ce-Doped Yag Phosphor Powder Prepared By Microwave Combustion |
| title_full_unstemmed | Study Of The Effect Of Injection Currents On White Light Emission Of Ce-Doped Yag Phosphor Powder Prepared By Microwave Combustion |
| title_short | Study Of The Effect Of Injection Currents On White Light Emission Of Ce-Doped Yag Phosphor Powder Prepared By Microwave Combustion |
| title_sort | study of the effect of injection currents on white light emission of ce-doped yag phosphor powder prepared by microwave combustion |
| topic | QC1-999 Physics |
| url | http://eprints.usm.my/48879/1/ICoSeMT%202019%20ABSTRACT%20BOOK%20153.pdf http://eprints.usm.my/48879/ |
| url_provider | http://eprints.usm.my/ |