Articles
  • The synthesis of crystalline SnO2 whiskers via a metalorganic chemical vapor deposition process
  • Myung Ho Konga, Yong Jung Kwonb, Dong Sub Kwakb, Tran Van Khaib, Jinho Ahnb, Kwang Bo Shimb, Chongmu Leec, Inpil Kangd, No-Hyung Parke, Dae-Sup Sof, Joon Woo Leef and Hyoun Woo Kimb,*
  • aKorea Institute of Materials Science, Changwon, Gyeongnam 641-831, Republic of Korea b Division of Materials Science and Engineering, Hanyang University, Seoul 133-791, Republic of Korea cDivision of Materials Science and Engineering, Inha University, Incheon 402-751, Republic of Korea dDepartment of Mechanical and Automotive Engineering, Pukyong National University, Busan 608-739, Republic of Korea eDepartment of Textile Convergence of Biotechnology & Nanotechnology, Korea Institute of Industrial Technology, Gyeonggi-do 426-910, Republic of Korea fNational Nanotechnology Policy Center, Korea Institute of Science and Technology Information, Seoul 130-741, Republic of Korea
Abstract
We demonstrate the synthesis of one-dimensional (1D) structures of tin oxide (SnO2) by a reaction of a tetramethyltin (Sn(CH3)4)) and oxygen (O2) mixture at 800 οC. Scanning electron microscopy showed that the morphology of the products was changed by varying the growth temperature. 1D and 2D structures were favored at 800 and 600 οC, respectively. We suggest the associated mechanisms by which the temperature controlled the morphology. X-ray energy dispersive spectroscopy revealed that the products contained elements of Sn and O. X-ray diffraction, selected area electron diffraction, and latticeresolved transmission electron microscopy indicated that the SnO2 obtained were crystalline with a tetragonal structure. The Raman spectra exhibited three normal interior phonon modes corresponding to the tetragonal rutile SnO2 structure. The intensity of yellow photoluminescence emission increased with an increasing growth temperature in the range of 700-800 οC.

Keywords: Nanostructures, Chemical synthesis, Transmission electron microscopy

This Article

  • 2012; 13(6): 667-671

    Published on Dec 31, 2012

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