Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effects of Growth Conditions on Properties of ZnO Nanostructures Grown by Hydrothermal Method

수열합성법으로 성장된 ZnO 나노구조의 성장조건에 따른 특성

  • Cho, Min-Young (Department of Nano Systems Engineering, Inje University) ;
  • Kim, Min-Su (Department of Nano Systems Engineering, Inje University) ;
  • Kim, Ghun-Sik (Department of Nano Systems Engineering, Inje University) ;
  • Choi, Hyun-Young (Department of Nano Systems Engineering, Inje University) ;
  • Jeon, Su-Min (Department of Nano Systems Engineering, Inje University) ;
  • Yim, Kwang-Gug (Department of Nano Systems Engineering, Inje University) ;
  • Lee, Dong-Yul (Samsung LED) ;
  • Kim, Jin-Soo (Division of Advanced Materials Engineering, Chonbuk National University) ;
  • Kim, Jong-Su (Department of Physics, Yeungnam University) ;
  • Lee, Joo-In (Advanced Instrument Technology Center, Korea Research Institute of Standards and Science) ;
  • Leem, Jae-Young (Department of Nano Systems Engineering, Inje University)
  • 조민영 (인제대학교 나노시스템공학과) ;
  • 김민수 (인제대학교 나노시스템공학과) ;
  • 김군식 (인제대학교 나노시스템공학과) ;
  • 최현영 (인제대학교 나노시스템공학과) ;
  • 전수민 (인제대학교 나노시스템공학과) ;
  • 임광국 (인제대학교 나노시스템공학과) ;
  • 이동율 (삼성 LED) ;
  • 김진수 (전북대학교 신소재공학부) ;
  • 김종수 (영남대학교 물리학과) ;
  • 이주인 (한국표준과학연구원) ;
  • 임재영 (인제대학교 나노시스템공학과)
  • Received : 2010.04.05
  • Accepted : 2010.05.10
  • Published : 2010.05.25
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Abstract

ZnO nanostructures were grown on an Au seed layer by a hydrothermal method. The Au seed layer was deposited by ion sputter on a Si (100) substrate, and then the ZnO nanostructures were grown with different precursor concentrations ranging from 0.01 M to 0.3M at $150^{\circ}C$ and different growth temperatures ranging from $100^{\circ}C$ to $250^{\circ}C$ with 0.3 M of precursor concentration. FE-SEM (field-emission scanning electron microscopy), XRD (X-ray diffraction), and PL (photoluminescence) were carried out to investigate the structural and optical properties of the ZnO nanostructures. The different morphologies are shown with different growth conditions by FE-SEM images. The density of the ZnO nanostructures changed significantly as the growth conditions changed. The density increased as the precursor concentration increased. The ZnO nanostructures are barely grown at $100^{\circ}C$ and the ZnO nanostructure grown at $150^{\circ}C$ has the highest density. The XRD pattern shows the ZnO (100), ZnO (002), ZnO (101) peaks, which indicated the ZnO structure has a wurtzite structure. The higher intensity and lower FWHM (full width at half maximum) of the ZnO peaks were observed at a growth temperature of $150^{\circ}C$, which indicated higher crystal quality. A near band edge emission (NBE) and a deep level emission (DLE) were observed at the PL spectra and the intensity of the DLE increased as the density of the ZnO nanostructures increased.

Keywords

References

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