花状TeO_2微/纳米结构的制备及Raman光谱研究
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摘要
以Bi_2Te_3粉末为原料,采用热蒸发的方法成功制备出花状TeO_2微/纳米结构。利用扫描电子显微镜(SEM)对合成产物的形貌进行表征,结果显示样品的微/纳米结构是由大量微/纳米片堆叠成的花状团簇。通过EDS发现,样品由Te和O两种元素组成。利用激光共聚焦拉曼光谱仪对合成产物的Raman光谱进行表征,结果显示合成产物的光谱与TeO_2晶体一致,并且随着热蒸发温度的升高,拉曼谱峰的峰值越高,特征峰越锐利,在硅片上制备出的产物的结晶度越好。
Using Bi_2Te_3 powder as raw material,TeO_2 micro-nanostructures were successfully prepared by thermal evaporation.The morphology of the synthesized products was characterized by scanning electron microscopy(SEM).The results illustrate that the micro-nanostructures of the synthesized products are flower-like clusters formed by stacking a large number of micro-nanosheets.It was found by EDS that the sample consisted of two elements of Te and O.The Raman spectra of synthesized products were characterized by confocal laser Raman spectroscopy.The results show that the spectra of the synthesized products are consistent with those of TeO_2 crystals.Also with the increase of thermal evaporation temperature,the higher the intensity of the Raman peak is,the sharper the characteristic peak is,and the better the crystallinity of the product prepared on Si substrate is.
Using Bi_2Te_3 powder as raw material,TeO_2 micro-nanostructures were successfully prepared by thermal evaporation.The morphology of the synthesized products was characterized by scanning electron microscopy(SEM).The results illustrate that the micro-nanostructures of the synthesized products are flower-like clusters formed by stacking a large number of micro-nanosheets.It was found by EDS that the sample consisted of two elements of Te and O.The Raman spectra of synthesized products were characterized by confocal laser Raman spectroscopy.The results show that the spectra of the synthesized products are consistent with those of TeO_2 crystals.Also with the increase of thermal evaporation temperature,the higher the intensity of the Raman peak is,the sharper the characteristic peak is,and the better the crystallinity of the product prepared on Si substrate is.
引文
[1] DU X,ZHANG L,DONG G,et al.Coloration and nonlinear optical properties of ZnTe quantum dots in ZnO-TeO2-P2O5 glasses[C].中国功能玻璃学术研讨会暨新型光电子材料国际论坛.2014:40.
[2] LIU Q J,LIU Z T,FENG L P,et al.First-principles study of structural,elastic,electronic,and optical properties of γ-TeO2[J].Physical B Condensed Matter,2010,405(15):3 159-3 163.
[3] THOMAS P A.The crystal structure and absolute optical chirality of paratellurite,α-TeO2[J].Journal of Physics C Solid State Physics,2000,21(25):4 611.
[4] TAKIZAWA T.Optical absorption and reflection spec- tra of paratellurite,TeO2[J].Journal of the Physical Society of Japan,1980,48(2):505-510.
[5] LAI S,LOWREY T.OUM-A 180 nm nonvolatile memory cell element technology for standalone and embedded applications[C]//International Electron Devices Meeting.1998.
[6] 马嘉伟.TeO2纳米线的制备及其气敏特性研究[D].沈阳:东北大学,2014.
[7] HODGSON S N B,WENG L.Chemical and sol-gel processing of tellurite glasses for optoelectronics [J].Journal of Materials Science Materials in Electronics,2006,17(9):723-733.
[8] 秦碧殷.纳米二氧化碲的制备及其应用研究[D].广州:暨南大学,2010.
[9] 朱勇,岳世海,王威,等.二氧化碲晶体及其在红外器件中的应用研究进展[J].无机材料学报,2015,30(8):802-808.
[10] MAJCHROWSKI A,ZMIJA J.Czochralski growth of oxide single crystals under conditions of forced convection in the melt[J].Materials Science & Engineering A,1993,173(1-2):19-22.
[11] 季小红,桑文斌,刘冬华,等.声光晶体TeO2的生长及缺陷研究[J].人工晶体学报,2001,30(1):93-98.
[12] 陈伟龙.二氧化碲及其复合材料的制备与研究[D].广州:暨南大学,2015.
[13] 沈岩柏,魏德洲,马嘉伟,等.TeO2纳米线的制备及其室温NO2气敏特性[J].东北大学学报(自然科学版),2014,35(7):1 019-1 022.
[14] 刘蔚.二氧化碲一维纳米结构的气敏性能研究[D].长沙:湖南师范大学,2015.
[15] 储耀卿,葛增伟,吴国庆,等.大尺寸优质声光晶体TeO2的生长[J].人工晶体学报,2004,5(5):810-812.
[16] 刘晓静,仇怀利,王爱华,等.二氧化碲(TeO2)晶体的Raman光谱研究[J].光谱学与光谱分析,2003,23(3):484-486.
[17] 杨序纲,吴琪琳.拉曼光谱的分析与应用[M].北京:国防工业出版社,2008.
[2] LIU Q J,LIU Z T,FENG L P,et al.First-principles study of structural,elastic,electronic,and optical properties of γ-TeO2[J].Physical B Condensed Matter,2010,405(15):3 159-3 163.
[3] THOMAS P A.The crystal structure and absolute optical chirality of paratellurite,α-TeO2[J].Journal of Physics C Solid State Physics,2000,21(25):4 611.
[4] TAKIZAWA T.Optical absorption and reflection spec- tra of paratellurite,TeO2[J].Journal of the Physical Society of Japan,1980,48(2):505-510.
[5] LAI S,LOWREY T.OUM-A 180 nm nonvolatile memory cell element technology for standalone and embedded applications[C]//International Electron Devices Meeting.1998.
[6] 马嘉伟.TeO2纳米线的制备及其气敏特性研究[D].沈阳:东北大学,2014.
[7] HODGSON S N B,WENG L.Chemical and sol-gel processing of tellurite glasses for optoelectronics [J].Journal of Materials Science Materials in Electronics,2006,17(9):723-733.
[8] 秦碧殷.纳米二氧化碲的制备及其应用研究[D].广州:暨南大学,2010.
[9] 朱勇,岳世海,王威,等.二氧化碲晶体及其在红外器件中的应用研究进展[J].无机材料学报,2015,30(8):802-808.
[10] MAJCHROWSKI A,ZMIJA J.Czochralski growth of oxide single crystals under conditions of forced convection in the melt[J].Materials Science & Engineering A,1993,173(1-2):19-22.
[11] 季小红,桑文斌,刘冬华,等.声光晶体TeO2的生长及缺陷研究[J].人工晶体学报,2001,30(1):93-98.
[12] 陈伟龙.二氧化碲及其复合材料的制备与研究[D].广州:暨南大学,2015.
[13] 沈岩柏,魏德洲,马嘉伟,等.TeO2纳米线的制备及其室温NO2气敏特性[J].东北大学学报(自然科学版),2014,35(7):1 019-1 022.
[14] 刘蔚.二氧化碲一维纳米结构的气敏性能研究[D].长沙:湖南师范大学,2015.
[15] 储耀卿,葛增伟,吴国庆,等.大尺寸优质声光晶体TeO2的生长[J].人工晶体学报,2004,5(5):810-812.
[16] 刘晓静,仇怀利,王爱华,等.二氧化碲(TeO2)晶体的Raman光谱研究[J].光谱学与光谱分析,2003,23(3):484-486.
[17] 杨序纲,吴琪琳.拉曼光谱的分析与应用[M].北京:国防工业出版社,2008.
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