Persistent luminescence and synchrotron radiation study of the <textbox>Ca₂MgSi₂O₇textbox>:<textbox>Eu²⁺,R³⁺textbox> materials

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• 作者：T. Aitasalo ; J. H&#xf6 ; lsä ; M. Kirm ; T. Laamanen ; M. Lastusaari ; J. Niittykoski ; J. Raud ; R. Valtonen
• 关键词：Dicalcium magnesium disilicate ; Europium ; Persistent luminescence ; Synchrotron radiation
• 刊名：Radiation Measurements
• 出版年：2007
• 期刊代码：71_13504487
• 类别：ce
• 出版时间：April-May 2007
• 卷：42
• 期：4-5
• 页码：644-647
• 文件大小：192 K

摘要

The tetragonal tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml13&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=43b32ae278cf69988e8440b752b1c056" title="Click to view the MathML source">Ca₂MgSi₂O₇:tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml14&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=e6599deadc2bfe11eef642b80998be07" title="Click to view the MathML source">Eu²⁺,R³⁺ persistent luminescence materials were prepared by a solid state reaction. The UV excited and persistent luminescence was observed in the green region centred at 535 nm. Both luminescence phenomena are due to the same tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml15&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=67f3d2d867fda8b9c40e0307129d2e0d" title="Click to view the MathML source">Eu²⁺ ion occupying the single tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml16&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=908b183409727bdd2582641d5aa0c7ba" title="Click to view the MathML source">Ca²⁺ site in the host lattice. The tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml17&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=998a9ed364a8ea4804583afe6af38c99" title="Click to view the MathML source">R³⁺ codoping usually reduced the persistent luminescence of tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml18&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=f6da50c268f2e70c8f183d7cf9627360" title="Click to view the MathML source">Ca₂MgSi₂O₇:tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml19&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=a0ba2388f084404eaf3b46c2858b50b4" title="Click to view the MathML source">Eu²⁺, which differs from the tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml20&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=f1b14f652a929c888c1dd02b8003cb1a" title="Click to view the MathML source">M₂MgSi₂O₇:tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml21&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=70695d9bfca2a3a0705549ecd5c1033d" title="Click to view the MathML source">Eu²⁺ tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml22&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=907f2edca48058bf63ec53d6c63802ba" title="Click to view the MathML source">(M=Sr,Ba) and tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml23&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=a7c0a9c95041d0c15806d2386d4d8cd7" title="Click to view the MathML source">MAl₂O₄:tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml24&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=d3d27f45c5b765f8495f355564366f80" title="Click to view the MathML source">Eu²⁺ tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml25&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=164b84b009fa355694c31b69d33ec69f" title="Click to view the MathML source">(M=Ca,Sr) materials. Only the tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml26&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=a442ab42c37d8a62dd88a875a94cf779" title="Click to view the MathML source">Tb³⁺ ion enhanced slightly the persistent luminescence. With the aid of synchrotron radiation, the band gap energy of tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml27&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=4453fbc9f4f86d82fccea7caf8137197" title="Click to view the MathML source">Ca₂MgSi₂O₇:tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml28&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=87bf22274cc1037d72b4d23a1015b1d8" title="Click to view the MathML source">Eu²⁺ was found to be about 7 eV that is very similar to those of the tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml29&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=552cf504790dccf8deba5e9d7e5dc66d" title="Click to view the MathML source">M₂MgSi₂O₇:tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml30&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=6f7956f579f1f0e1683b26099471c79c" title="Click to view the MathML source">Eu²⁺ tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml31&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=8043983790cb70e6f2f1e59973043b9f" title="Click to view the MathML source">(M=Sr,Ba) materials. Thermoluminescence results suggested that the tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml32&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=0f40fcb6263aaefe722ac92d8e3bb2e1" title="Click to view the MathML source">R³⁺ ions might act as electron traps, but only the TL peaks created by tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml33&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=7da1f7758bf09bcdf172144501a41026" title="Click to view the MathML source">Tm³⁺ and tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml34&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=27dd436c4a81e99decb13040d4cf0c93" title="Click to view the MathML source">Sm³⁺ can be found in the temperature range accessible. Lattice defects (e.g. oxygen vacancies) are also important, since the same main thermoluminescence peak was observed at about thURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml35&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=127fa9ce0458df15a20afe261120edf0">ttp://www.sciencedirect.com/cache/MiamiImageURL/B6TVS-4N3GFS4-F-5N/0?wchp=dGLbVzz-zSkWW" alt="Click to view the MathML source" align="absbottom" border="0" height=13 width=46> with and without tyle="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVS-4N3GFS4-F&_mathId=mml36&_user=10&_cdi=5542&_rdoc=34&_acct=C000050221&_version=1&_userid=10&md5=761d893cab4826b12a50f872f153bb4f" title="Click to view the MathML source">R³⁺ codoping.