本文選題：ZnS + 水熱法��； 參考：《蘭州理工大學(xué)》2011年碩士論文

【摘要】：目前,有關(guān)ZnS基納米材料的研究已經(jīng)成為國際上半導(dǎo)體材料研究領(lǐng)域的熱點之一。在短短的幾年時間內(nèi),ZnS基納米材料的研究已經(jīng)取得了長足的進步。對ZnS基納米材料的制備大體可分為物理法和化學(xué)法兩類,其中基于溶液的化學(xué)合成方法由于操作簡單、不需要貴重儀器、價格低廉等優(yōu)點受到納米材料制備領(lǐng)域的青睞,但由于反應(yīng)物在溶液中反應(yīng)過程復(fù)雜,所以反映結(jié)果不易控制,反應(yīng)機制仍待明確。 首先,采用水熱法以水合肼作為溶劑,制備出均勻一致的纖鋅礦雙螺旋結(jié)構(gòu)ZnS納米棒。在所制得的納米結(jié)構(gòu)中,雙螺旋納米結(jié)構(gòu)生長方向一致,都沿著[001]方向生長。在考察實驗條件對產(chǎn)物物相和形貌影響的基礎(chǔ)上,探討了溶劑的作用和產(chǎn)物的形成機理。同時研究了產(chǎn)物的紫外吸收和光致發(fā)光性能。 其次,以尿素為礦化劑制備ZnS納米顆粒。樣品粒徑在10nm左右,為多晶結(jié)構(gòu)。實驗表明,采用尿素為礦化劑,在較寬溫度范圍內(nèi)可以制備出ZnS納米顆粒。該方法中采用的礦化劑—尿素可用于制備其他Ⅱ—Ⅵ族半導(dǎo)體納米材料。 同時,以乙二胺和水為溶劑,制備了錳摻雜的ZnS納米粒子,探討了反應(yīng)溫度和摻雜離子濃度對對ZnS:Mn納米晶晶體結(jié)構(gòu)和發(fā)光性質(zhì)的影響。結(jié)果表明,錳離子摻雜濃度對硫化鋅的發(fā)光強度有一定影響,對其生成和晶型無明顯影響。 合成ZnS:Cu納米粉體,產(chǎn)物均為立方相結(jié)構(gòu),粒徑大小約為10nm。在材料的紫外可見吸收光譜中,出現(xiàn)了明顯的藍移現(xiàn)象。研究了銅物質(zhì)的量分數(shù)在0.5—1.5%范圍內(nèi)變化時對ZnS納米粒子光致發(fā)光特性的影響。發(fā)現(xiàn)微量雜質(zhì)銅的摻入在ZnS晶體中產(chǎn)生新的能級是導(dǎo)致光譜分裂的主要原因。并初步探討了不同發(fā)射波長的發(fā)射機理。
[Abstract]:At present , the research of ZnS - based nano - materials has become one of the hot topics in the field of international semiconductor materials research . In the short years , the research of ZnS - based nano - materials has made great progress . The preparation of ZnS - based nano - materials can be divided into physical and chemical methods .


First , using hydrazine hydrate as the solvent , the ZnS nanorods with uniform and consistent double helix structure were prepared by hydrothermal method . In the prepared nano structure , the growth direction of the double helix nano - structure was consistent and all along the direction of arrow 001 . The effects of the solvent and the formation mechanism of the product were discussed . The UV absorption and photoluminescence properties of the product were studied .


The ZnS nanoparticles were prepared by using urea as mineralizer . The particle size of the samples was about 10nm , which was a polycrystalline structure . The experiment shows that the ZnS nanoparticles can be prepared by using urea as mineralizer , and the mineralizer - urea used in the method can be used for preparing other II - VI semiconductor nano materials .


Mn - doped ZnS nanoparticles were prepared by using ethylenediamine and water as solvents . The effects of reaction temperature and doping concentration on the crystal structure and luminescence properties of ZnS : Mn nanocrystalline were investigated .


In this paper , we synthesized ZnS : Cu nano - powder , the product is cubic phase structure , the particle size is about 10nm . In the ultraviolet visible absorption spectrum of the material , there is obvious blue shift phenomenon . It is found that the new energy level is the main reason of the spectrum splitting in the range of 0.5 - 1.5 % . It is found that the new energy level in ZnS crystal is the main reason of spectrum splitting . The emission mechanism of different emission wavelengths is discussed .
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TB383.1

【參考文獻】

相關(guān)期刊論文 前10條

1 張韻慧,李磊;微乳液法制備ZnS∶Cu納米微粒及其光學(xué)性能的表征[J];材料工程;2001年01期

2 邵忠寶;牛盾;馬國峰;陳雪冰;王沖沖;;納米硫化鋅的制備及助燃性能[J];材料研究學(xué)報;2006年01期

3 王之建 ,張海明 ,張立功 ,李玉琴 ,元金山;ZnS:Mn納米熒光粉的制備[J];發(fā)光學(xué)報;2002年04期

4 于廣友,范希武,申德振,張吉英,楊寶均,蔡強;在SiO_2分子篩內(nèi)CdS納米晶的內(nèi)延生長及特性研究[J];發(fā)光學(xué)報;1997年02期

5 憨勇,劉正堂,鄭修麟;化學(xué)氣相沉積制備ZnS塊材料均勻性的研究[J];硅酸鹽通報;1998年04期

6 王鵬飛,袁媛,劉華,奚軍,翁孟炎;納米硫化鋅的制備及其研究進展[J];化學(xué)世界;2003年08期

7 馬國宏,杜祖亮,趙偉利;ZnS超微粒有序組裝體系制備與結(jié)構(gòu)研究[J];化學(xué)物理學(xué)報;1998年03期

8 李義和,王本根,傅圣利,王清華;摻雜ZnS半導(dǎo)體納米微晶材料的研究進展[J];化學(xué)研究與應(yīng)用;2000年01期

9 高麗麗;劉力;;納米材料的研究[J];化工科技;2006年01期

10 孫成林;連欽明;;納米技術(shù)與納米材料制備及應(yīng)用現(xiàn)狀[J];中國非金屬礦工業(yè)導(dǎo)刊;2006年03期

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本文編號：1985794