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硼酸盐种类繁多，例如：硼酸钙、硼酸镁、硼酸钡等，在众多硼酸盐体系中,硼酸锌除了具有化学性质稳定,合成温度低等硼酸盐均具备的优异性能外，与其他种类硼酸盐化合物相比较，硼酸锌的种类更多（Zn、B配比不同就能得到结构不同的硼酸锌）。除了上述的优异性能外，硼酸锌还是一种很好的环保型材料。硼酸锌除了可以用作良好的阻燃剂以外还可以用来制备发光材料。目前，一些种类的硼酸锌已被用作基质来制备荧光粉，且其稀土发光材料产品性能优异，制灯后发光效率高、显色性好、光衰小、成本低，已经作为重要的发光产品应用于制作灯用发光材料以及PDP显示中。随着现代社会人们对环保产业的日益重视，硼酸锌便越来越受到人们的青睐，其应用前景变得十分可观。 稀土离子中Eu3+离子经常被作为一种常用的红光激活离子来制备红色荧光粉。以Eu3+离子为激活剂掺杂到硼酸盐基质中可以获得发光性能优异的发光材料。近年来以硼酸锌为基质的稀土掺杂的发光玻璃和荧光粉常见报道。硼酸锌种类众多，而且有研究小组研究Eu3+离子和Mn2+离子共掺杂硼酸锌发光材料，发现过渡金属Mn2+的加入对产物的荧光性能有着一定程度的影响；因此有必要对以硼酸锌为基质的稀土发光材料的合成和发光性能进行系统的研究。 以硼酸锌为基质的稀土发光材料的主要制备方法有：共沉淀法、微波法、高温固相法，水热法等。其中水热法相对与其他制备方法来说，具有合成条件不苛刻，无污染，反应温度不高，成本低等诸多优点。所以本论文采用水热法对Eu3+掺杂硼酸锌发光材料的合成及发光性能进行了系统的研究。 合成了两种Eu3+离子单掺杂的硼酸锌发光材料，并在其中发光性能较好的一种硼酸锌中引入Mn2+离子，研究其发光性能的变化。 论文第一部分利用红外光谱、X-射线粉末衍射、扫描电子显微镜、荧光等方法为表征手段，考察不同掺杂量的Eu3+对两种不同类型的硼酸锌产物形貌及荧光强度的影响，并进行比较分析。两种产物均为球状，在一定范围内两种产物的荧光强度都随着Eu3+的掺杂浓度的增大逐渐增加；当Eu3+的掺杂浓度为28.5%，产物的荧光强度最强；继续加大Eu3+的掺杂浓度，产生荧光猝灭，产物的荧光强度减弱。 论文的第二部分在上述两种产物中，其中发光性能较好的一种荧光粉中引入了Mn2+，探讨了Mn2+的掺杂量对产物的形貌及荧光强度的影响。实验结果显示Eu3+的掺杂量为28.5%时，加入Mn2+，产物的荧光强度减弱，且产物的荧光强度随着Mn2+的掺杂量的增大逐渐减弱，形貌被破坏，当Mn2+掺杂浓度为3%时，产物中的球形全部被破坏。可见，Mn2+的掺杂量对以硼酸锌为基质的发光材料的发光强度和形貌都有着显著的影响。 |
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青蜂侠
捐助贵宾 (正式写手)
- 翻译EPI: 13
- 应助: 4 (幼儿园)
- 金币: 2246.8
- 散金: 715
- 红花: 19
- 帖子: 436
- 在线: 136小时
- 虫号: 1156453
- 注册: 2010-11-26
- 性别: GG
- 专业: 高分子助剂
★ ★
book2005593: 金币-1, google机器翻译，请勿再犯，谢谢合作~ 2013-05-21 21:18:35
lnulstk: 金币+1, 翻译EPI+1, 虽然是机器翻译的，但是还是表示感谢吧 2013-05-22 08:49:00
phu_grassman: 金币-2, 翻译EPI-1, 机器翻译，撤销EPI。 2013-05-25 08:19:48
book2005593: 金币-1, google机器翻译，请勿再犯，谢谢合作~ 2013-05-21 21:18:35
lnulstk: 金币+1, 翻译EPI+1, 虽然是机器翻译的，但是还是表示感谢吧 2013-05-22 08:49:00
phu_grassman: 金币-2, 翻译EPI-1, 机器翻译，撤销EPI。 2013-05-25 08:19:48
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Wide variety of borates, for example: calcium borate, calcium borate, magnesium borate, barium, etc., in many borate, zinc borate in addition to the chemical nature of stable, low synthesis temperature borates possess excellent properties, and other types borate compound compared to more types of zinc borate (Zn, the ratio of the type B will be able to obtain a structure of the type of zinc borate). In addition to the excellent performance, zinc borate, or a good environmentally friendly materials. Zinc borate can also be used in addition to flame retardants can be used as well to prepare a light-emitting material. At present, some types of zinc borate has been used as a matrix to prepare the phosphor and rare earth luminescent materials performance, high luminous efficiency in the system of light, the color is good, light is small, low cost, has been as important as the light-emitting The products used in the production of lights with light-emitting materials and PDP display. With the growing importance of modern society, people for the environmental protection industry, zinc borate more and more people of all ages, and its application prospect is very impressive. Rare earth ion Eu3 + ion is often commonly used as a red light-activated ion red phosphor to be prepared. Activator Eu3 + ion-doped the borate matrix light-emitting performance can be obtained is excellent in light-emitting material. In recent years, rare-earth-doped zinc borate matrix light-emitting glass and phosphor commonly reported. Many types of zinc borate, and team studied Eu3 + ions and Mn2 + ions Total doped zinc borate light-emitting materials, transition metal Mn2 + the join has a certain degree of influence on the fluorescence properties of the product; Therefore, it is necessary to zinc borate matrix of Synthesis and luminescence properties of rare earth luminescent materials system. Rare Earth Luminescent Materials zinc borate matrix preparation method: co-precipitation, microwave method, high-temperature solid-phase method, hydrothermal method. Hydrothermal method relative to the other preparation method has many advantages synthesis conditions are not harsh, non-polluting, the reaction temperature is not high, and low cost. In this thesis, the hydrothermal method, a systematic study of the Eu3 +-doped zinc borate Luminescent Materials Synthesis and Luminescence Properties. Synthesis of the two Eu3 + ions doped zinc borate luminescent material, and wherein preferably the light emitting performance of a zinc borate, the introduction of Mn2 + ions, to study changes in their luminescent properties. The first part of the paper the use of infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy, fluorescence characterization methods, the effects of different doping amount of Eu3 + on two different types of zinc borate product morphology and fluorescence intensity, and comparative analysis. The two products are spherical, the fluorescence intensity of the two products in a certain range with Eu3 + dopant concentration increases gradually increases; when the Eu3 + doping concentration of 28.5%, the fluorescence intensity of the product is the strongest; continue to add Eu3 + doping concentration, fluorescence quenching, fluorescence intensity of the product. In the second part of the two products, in which the light-emitting properties of a phosphor introduction of Mn2 +, Mn2 + doping on the morphology of the product and the fluorescence intensity. The experimental results show that when the Eu3 + doping amount is 28.5%, Mn2 +, the product of the fluorescence intensity and the fluorescence intensity of the product with the Mn2 + doping amount increases gradually weakened, Morphology be destroyed, when the concentration of Mn2 + doped was 3%, the spherical product has been completely destroyed. Visible, Mn2 + doped zinc borate matrix The luminous intensity of the light emitting material and morphology have a significant impact.  希望对你有帮助！！！ |
2楼2013-05-21 16:46:52
青蜂侠
捐助贵宾 (正式写手)
- 翻译EPI: 13
- 应助: 4 (幼儿园)
- 金币: 2246.8
- 散金: 715
- 红花: 19
- 帖子: 436
- 在线: 136小时
- 虫号: 1156453
- 注册: 2010-11-26
- 性别: GG
- 专业: 高分子助剂
3楼2013-05-22 09:23:40
青蜂侠
捐助贵宾 (正式写手)
- 翻译EPI: 13
- 应助: 4 (幼儿园)
- 金币: 2246.8
- 散金: 715
- 红花: 19
- 帖子: 436
- 在线: 136小时
- 虫号: 1156453
- 注册: 2010-11-26
- 性别: GG
- 专业: 高分子助剂
4楼2013-05-25 08:22:07