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难慰平生

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RXMCDM

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要翻的话复制后传上来,要不翻译后有些东西打不出来,很费劲。同时保留截图,以免复制出错。
2楼2014-02-25 23:49:09
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2楼: Originally posted by RXMCDM at 2014-02-25 23:49:09
要翻的话复制后传上来,要不翻译后有些东西打不出来,很费劲。同时保留截图,以免复制出错。

Synthesis, X-ray diffraction and photoluminescence investigations of Eu3+ -doped SrBPO5phosphor has been carried out in order to characterize the material. PL emission spectrum of air heated SrBPO5:Eu3+ phosphor exhibits bands at 590, 614, 651 and 702 nm under 238 nm excitation, assigned to the 5D0-7FJ (J¼1, 2, 3, 4) transitions of Eu3+ ions. Of these transitions, the emission centered at 614 nm is the most prominent. Photoluminescence decay time and Time-resolved emission spectrometric (TRES) studies of Eu3+ were carried out with lem= 614 nm and lex=238 nm. It suggested that Eu3+ ions are present at two different sites and predominantly occupying Sr2+ sites in the host lattice. Judd–Ofelt intensity parameters and other radiative properties were evaluated from the emission spectrum by adopting standard procedure. The trend observed in the J–O parameters (O24O4) confirms the covalency exiting between the Eu
3+ ion and ligands as well as the asymmetry around the metal ion site. The color coordinates of the system were evaluated (x=0.558 and y=0.355) and plotted on a standard CIE index diagram. The observations showed that the SrBPO5:Eu3+ phosphor is very close to the red emission material. Photoluminescence intensity was compared with that of a commercial red phosphor for commercial utility purpose. It is observed that, the photoluminescence intensity of the prepared phosphor was 60% as compared to the commercial phosphor Y2O3: Eu.
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3楼2014-02-26 11:32:04
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【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
难慰平生: 金币+60, 翻译EPI+1, ★★★★★最佳答案, 句子不是很通顺,不过比我自己翻译的好多了,那些专业词汇我都翻译不出。哎,都没人翻译了,最佳答案给你啦!谢谢!!! 2014-02-27 11:01:34
为表征经空气加热的SrBPO5:Eu3 +荧光粉材料的PL发射光谱,我们对Eu3 +的掺杂SrBPO5荧光粉进行合成、X射线衍射和光致发光研究。结果表明,在238nm激发后,发射谱带处于590,614,651和702 nm处,属于铕离子的5D0-7FJ(j= 1,2,3,4)跃迁。这些跃迁中,集中在614 nm处的发射最突出。我们在LEM=614纳米和lex=238 nm处对Eu3 +离子的光致发光衰减时间和时间分辨发射光谱(TRES)研究结果表明,Eu3 +离子存在于两个不同的点阵位,在主晶格主要占领Sr2+的点阵位。采用标准方法对Judd-Ofelt强度参数和其他辐射特性通过发射光谱进行了研究。J-O参数(O24O4)观察到的趋势印证了除外围绕该金属离子点阵的不对称性,Eu3 +离子和配体共价 。对系统的颜色一致性进行了评价(X =0.558和y=0.355),并绘制在标准CIE指数图上。观测表明,SrBPO5:Eu3 +的荧光体与红色发光材料非常接近。光致发光强度与使用于商业目的的商用红色荧光粉进行比较。据观察,与商业荧光粉Y2O3:Eu比较时,制得的荧光粉的光致发光强度为60%。
O24O4为复制后引起的改变,自己根据原文重新修改,类似的还有5D0-7FJ(j= 1,2,3,4)等。
4楼2014-02-27 00:35:57
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