The fact that the intensity of emission is related to the doped-Ti content implies that the doped-Ti ion is the origin of this broad emission peak at 565nm. As a consequence of reducing atmosphere during sample processing and the charge balancerequirement under high doping concentration for Ti ions, mixture valence states of Ti (Ti2+, Ti3+ and Ti4+) ions with different ratio may exist together in the present samples. The charge transition mechanism of the luminescence center,
a major mechanism for luminescence, can be neglected in the present material as the charge transfer of Ti2+, Ti3+ or Ti4+ions give their emission peaks in the range from 600nm to the IR region [15–17]. For example, the 565nm band
cannot be attributed to the T-E characteristic transition of Ti3+ because no obvious absorption band around 570nm of Ti3+ ion is detected in our samples. Moreover, the lifetime of a simple transition from Ti3+ ion is only about several ms and it cannot produce the 565nm long afterglow emission without the aid of other defects as
trapping energy level [18]. Although sufficient experimental data at the present stage are still lacking for a clear explanation about the origin of the 565 nm emission band, we consider that this yellow broad emission band (565 nm) can be attributed to recombination of the trapped electrons which are thermally released in the donating
level introduced by Ti4+ ions substitution for Y3+ ions and the holes in the accepting level introduced by Ti2+ ions substitution for Y3+ ions.
谢绝用翻译软件翻译的答案,如果翻译的好,还会接着追加分数的,谢谢:)
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more completely and meticulously, seize the nature of events and hold on to the general picture.真恐怖的一篇文章,用了我将近一个钟头。总算翻完了。一楼写得很好,只有一两处不太通的地方,我在翻的时候还参考过他的翻译。算是他的升级吧,楼主悬赏分还是给他吧。希望我们能帮到你。
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各位大侠,谁能拔刀相助,帮我把这片英文论文翻译成中文啊,小弟深感谢...
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