| Role of monovalent co-dopants on the PL emission properties of YAI3（BO3）4：Ce3＋ phosphor |
| |
| 作者姓名： | R.SatheeshKumar ;V.Ponnusamy ;V.Sivakumar ;M.T.Jose |
| |
| 作者单位： | [1]Department of Physics,Anna University,M.I.T. Campus,ChennaL Tamil Nadu-600044,India; [2]Research and Development Laboratory,Department of Physics,Saveetha Engineering College,ChennaL Tamil Nadu-602105,lndia; [3]Radiological Sefety Division,Indira Gandhi Centre for Atomic Research,Tamil Nadu-603102,India |
| |
| 摘 要： | The cerium （Ce3＋） doped yttrium aluminium borate （YAB） phosphor was synthesized by modified solid state reaction. The phosphor＇s phase purity and its emission properties were studied using powder X-ray diffraction pattern and photoluminescence spectroscopy. The synthesized YAB had rhomobohedral crystal structure. The phosphor had two different excitation and emission spectra. By 325 nm excitation, the phosphor had emission at 373 nm and with 363 nm excitation; the phosphor gave violet-blue emission at 418 nm. The UV emission of the phosphor originated due to Ce3＋ ions at the yttrium site and violet-blue emission owing to Ce3＋ ions at non-regular sites viz., A13＋ and interstitial sites. The emission intensity of the phosphor was enhanced when monovalent ions （K＋, Na＋, and F） were added as co-dopants. The crucial role of ionic radii of monovalent co-dopants on the emission enhancement of the YAB：Ce3＋ phosphor was reported. Thermogravimetric study showed that the YAB possessed high thermal stability at up to 900 ℃.
|
| 关 键 词： | 发射特性 荧光体 掺杂剂 离子半径 光致发光光谱 X射线衍射图 蓝色发光 YAB |
| 收稿时间： | 6 August 2013 |
Role of monovalent co-dopants on the PL emission properties of YAI3（BO3）4：Ce3＋ phosphor |
| |
| R.SatheeshKumar,;V.Ponnusamy,;V.Sivakumar,;M.T.Jose.Role of monovalent co-dopants on the PL emission properties of YAI3（BO3）4：Ce3＋ phosphor[J].Journal of Rare Earths,2014,32(10):927-932. |
| |
| Authors: | R Satheesh Kumar V Pormusarny V Sivakumar MT Jose |
| |
| Affiliation: | ( Department of Physics, Anna University, M.I.T. Campus, Chennai Tamil Nadu-600044, India; Research and Development Laboratory, Department of Physics, Saveetha Engineering College, ChennaL Tamil Nadu-602105, lndia; Radiological Sefety Division, Indira Gandhi Centre for Atomic Research, Tamil Nadu-603102, India) |
| |
| Abstract: | The cerium (Ce3+) doped yttrium aluminium borate (YAB) phosphor was synthesized by modified solid state reaction. The phosphor's phase purity and its emission properties were studied using powder X-ray diffraction pattern and photoluminescence spectroscopy. The synthesized YAB had rhomobohedral crystal structure. The phosphor had two different excitation and emission spectra. By 325 nm excitation, the phosphor had emission at 373 nm and with 363 nm excitation; the phosphor gave violet-blue emission at 418 nm. The UV emission of the phosphor originated due to Ce3+ ions at the yttrium site and violet-blue emission owing to Ce3+ ions at non-regular sites viz., Al3+ and interstitial sites. The emission intensity of the phosphor was enhanced when monovalent ions (K+, Na+, and F?) were added as co-dopants. The crucial role of ionic radii of monovalent co-dopants on the emission enhancement of the YAB:Ce3+ phosphor was reported. Thermogravimetric study showed that the YAB possessed high thermal stability at up to 900 °C. |
| |
| Keywords: | yttrium aluminium borate cerium monovalent codopants ionic radii thermogravimetric analysis rare earths |
| 本文献已被 维普 ScienceDirect 等数据库收录！ |
|
