화학공학소재연구정보센터
Korean Journal of Materials Research, Vol.27, No.10, 530-533, October, 2017
Morphological Variation and Luminescence Properties of ZnO Micro/ Nanocrystals Synthesized by Thermal Evaporation Method
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ZnO micro/nanocrystals with different morphologies were synthesized by thermal evaporation of various zinc source materials in an air atmosphere. Zinc acetate, zinc carbonate and zinc iodide were used as the source materials. No catalysts or substrates were used in the synthesis of the ZnO crystals. The scanning electron microscope(SEM) image showed that the morphology of ZnO crystals was strongly dependent on the source materials, which suggests that source material is one of the key factors in controlling the morphology of the obtained ZnO crystals. Tetrapods, nanogranular shaped crystals, spherical particles and crayon-shaped crystals were obtained using different source materials. The X-ray diffraction(XRD) pattern revealed that the all the ZnO crystals had hexagonal wurtzite crystalline structures. An ultraviolet emission was observed in the cathodoluminescence spectrum of the ZnO crystals prepared via thermal evaporation of Zn powder. However, a strong green emission centered at around 500 nm was observed in the cathodoluminescence spectra of the ZnO crystals prepared using zinc salts as the source materials.
  1. Umar A, Kim SH, Kim JH, Hahn YB, Mater. Lett., 62, 167 (2008)
  2. Cai X, Wang F, Yan D, Zhu Z, Gu X, Ceram. Int., 40, 12293 (2014)
  3. Lim YS, Park JW, Hong ST, Kim J, Mater. Sci. Eng. B-Solid State Mater. Adv. Technol., 129, 100 (2006)
  4. Ates T, Tatar C, Yakuphanoglu F, Sens. Actuators A-Phys., 190, 153 (2013)
  5. Bin Kwon Y, Shin SW, Lee HK, Lee JY, Moon JH, Kim JH, Curr. Appl. Phys., 11(1), S197 (2011)
  6. Tian T, Xing J, Cheng L, Zheng L, Ruan W, Ruan X, Li G, Ceram. Int., 41, S774 (2015)
  7. Chen ZG, Li F, Liu G, Tang Y, Cong H, Lu GQ, Cheng HM, J. Nanosci. Nanotechnol., 6, 704 (2006)
  8. Yao BD, Chan YF, Wang N, Appl. Phys. Lett., 81, 757 (2002)
  9. Umar A, Suh EK, Hahn YB, Solid State Commun., 139, 447 (2006)
  10. Li WJ, Shi EW, Zhong WZ, Yin ZW, J. Cryst. Growth, 203, 186 (1999)
  11. Vanheusden K, Seager CH, Warren WL, Tallant DR, Voigt JA, Appl. Phys. Lett., 68, 403 (1996)