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硼酸鹽種類繁多，例如：硼酸鈣、硼酸鎂、硼酸鋇等，在眾多硼酸鹽體系中,硼酸鋅除了具有化學(xué)性質(zhì)穩(wěn)定,合成溫度低等硼酸鹽均具備的優(yōu)異性能外，與其他種類硼酸鹽化合物相比較，硼酸鋅的種類更多（Zn、B配比不同就能得到結(jié)構(gòu)不同的硼酸鋅）。除了上述的優(yōu)異性能外，硼酸鋅還是一種很好的環(huán)保型材料。硼酸鋅除了可以用作良好的阻燃劑以外還可以用來制備發(fā)光材料。目前，一些種類的硼酸鋅已被用作基質(zhì)來制備熒光粉，且其稀土發(fā)光材料產(chǎn)品性能優(yōu)異，制燈后發(fā)光效率高、顯色性好、光衰小、成本低，已經(jīng)作為重要的發(fā)光產(chǎn)品應(yīng)用于制作燈用發(fā)光材料以及PDP顯示中。隨著現(xiàn)代社會人們對環(huán)保產(chǎn)業(yè)的日益重視，硼酸鋅便越來越受到人們的青睞，其應(yīng)用前景變得十分可觀。 稀土離子中Eu3+離子經(jīng)常被作為一種常用的紅光激活離子來制備紅色熒光粉。以Eu3+離子為激活劑摻雜到硼酸鹽基質(zhì)中可以獲得發(fā)光性能優(yōu)異的發(fā)光材料。近年來以硼酸鋅為基質(zhì)的稀土摻雜的發(fā)光玻璃和熒光粉常見報道。硼酸鋅種類眾多，而且有研究小組研究Eu3+離子和Mn2+離子共摻雜硼酸鋅發(fā)光材料，發(fā)現(xiàn)過渡金屬Mn2+的加入對產(chǎn)物的熒光性能有著一定程度的影響；因此有必要對以硼酸鋅為基質(zhì)的稀土發(fā)光材料的合成和發(fā)光性能進行系統(tǒng)的研究。 以硼酸鋅為基質(zhì)的稀土發(fā)光材料的主要制備方法有：共沉淀法、微波法、高溫固相法，水熱法等。其中水熱法相對與其他制備方法來說，具有合成條件不苛刻，無污染，反應(yīng)溫度不高，成本低等諸多優(yōu)點。所以本論文采用水熱法對Eu3+摻雜硼酸鋅發(fā)光材料的合成及發(fā)光性能進行了系統(tǒng)的研究。 合成了兩種Eu3+離子單摻雜的硼酸鋅發(fā)光材料，并在其中發(fā)光性能較好的一種硼酸鋅中引入Mn2+離子，研究其發(fā)光性能的變化。 論文第一部分利用紅外光譜、X-射線粉末衍射、掃描電子顯微鏡、熒光等方法為表征手段，考察不同摻雜量的Eu3+對兩種不同類型的硼酸鋅產(chǎn)物形貌及熒光強度的影響，并進行比較分析。兩種產(chǎn)物均為球狀，在一定范圍內(nèi)兩種產(chǎn)物的熒光強度都隨著Eu3+的摻雜濃度的增大逐漸增加；當(dāng)Eu3+的摻雜濃度為28.5%，產(chǎn)物的熒光強度最強；繼續(xù)加大Eu3+的摻雜濃度，產(chǎn)生熒光猝滅，產(chǎn)物的熒光強度減弱。 論文的第二部分在上述兩種產(chǎn)物中，其中發(fā)光性能較好的一種熒光粉中引入了Mn2+，探討了Mn2+的摻雜量對產(chǎn)物的形貌及熒光強度的影響。實驗結(jié)果顯示Eu3+的摻雜量為28.5%時，加入Mn2+，產(chǎn)物的熒光強度減弱，且產(chǎn)物的熒光強度隨著Mn2+的摻雜量的增大逐漸減弱，形貌被破壞，當(dāng)Mn2+摻雜濃度為3%時，產(chǎn)物中的球形全部被破壞�？梢姡琈n2+的摻雜量對以硼酸鋅為基質(zhì)的發(fā)光材料的發(fā)光強度和形貌都有著顯著的影響。 |
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青蜂俠
捐助貴賓 (正式寫手)
- 翻譯EPI: 13
- 應(yīng)助: 4 (幼兒園)
- 金幣: 2246.8
- 散金: 715
- 紅花: 19
- 帖子: 436
- 在線: 136小時
- 蟲號: 1156453
- 注冊: 2010-11-26
- 性別: GG
- 專業(yè): 高分子助劑
3樓2013-05-22 09:23:40
青蜂俠
捐助貴賓 (正式寫手)
- 翻譯EPI: 13
- 應(yīng)助: 4 (幼兒園)
- 金幣: 2246.8
- 散金: 715
- 紅花: 19
- 帖子: 436
- 在線: 136小時
- 蟲號: 1156453
- 注冊: 2010-11-26
- 性別: GG
- 專業(yè): 高分子助劑
★ ★
book2005593: 金幣-1, google機器翻譯，請勿再犯，謝謝合作~ 2013-05-21 21:18:35
lnulstk: 金幣+1, 翻譯EPI+1, 雖然是機器翻譯的，但是還是表示感謝吧 2013-05-22 08:49:00
phu_grassman: 金幣-2, 翻譯EPI-1, 機器翻譯，撤銷EPI。 2013-05-25 08:19:48
book2005593: 金幣-1, google機器翻譯，請勿再犯，謝謝合作~ 2013-05-21 21:18:35
lnulstk: 金幣+1, 翻譯EPI+1, 雖然是機器翻譯的，但是還是表示感謝吧 2013-05-22 08:49:00
phu_grassman: 金幣-2, 翻譯EPI-1, 機器翻譯，撤銷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.  希望對你有幫助�。�！ |
2樓2013-05-21 16:46:52
青蜂俠
捐助貴賓 (正式寫手)
- 翻譯EPI: 13
- 應(yīng)助: 4 (幼兒園)
- 金幣: 2246.8
- 散金: 715
- 紅花: 19
- 帖子: 436
- 在線: 136小時
- 蟲號: 1156453
- 注冊: 2010-11-26
- 性別: GG
- 專業(yè): 高分子助劑
4樓2013-05-25 08:22:07
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