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2019 Vol.29, Issue 7 Preview Page
ZnO Micro/Nanocrystals Synthesized by Thermal Evaporation Method using Mn Powder as the Reducing Agent

Mn 분말을 환원제로 사용하여 열증발법에 의해 생성된 ZnO 마이크로/나노결정

Ho-Jin So1
,
Geun-Hyoung Lee12†
소 호진1
,
이 근형12†
1Department of Advanced Materials Engineering, Graduate School, Dong-eui University, 176 Eomgwangno, Busanjin-gu, Busan 47340, Republic of Korea
2Electrical & Electronic Materials Engineering Major, Division of Advanced Materials Engineering, Dong-eui University, 176 Eomgwangno, Busanjin-gu, Busan 47340, Republic of Korea
1동의대학교 대학원 신소재공학과
2동의대학교 신소재공학부 전기전자소재공학전공
†Corresponding author E-Mail : hplee@deu.ac.kr (G.-H. Lee, Dong-eui Univ.)
July 2019. pp. 432-436
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Abstract

Zinc oxide(ZnO) micro/nanocrystals are grown via thermal evaporation of ZnO powder mixed with Mn powder, which is used as a reducing agent. The ZnO/Mn powder mixture produces ZnO micro/nanocrystals with diverse morphologies such as rods, wires, belts, and spherical shapes. Rod-shaped ZnO micro/nanocrystals, which have an average diameter of 360 nm and an average length of about 12 μm, are fabricated at a temperature as low as 800 °C due to the reducibility of Mn. Wireand belt-like ZnO micro/nanocrystals with length of 3 μm are formed at 900 °C and 1,000 °C. When the growth temperature is 1,100 °C, spherical shaped ZnO crystals having a diameter of 150 nm are synthesized. X-ray diffraction patterns reveal that ZnO had hexagonal wurtzite crystal structure. A strong ultraviolet emission peak and a weak visible emission band are observed in the cathodoluminescence spectra of the rod- and wire-shaped ZnO crystals, while visible emission is detected for the spherical shaped ZnO crystals.

Keywords
zinc oxide crystals
manganese powder
thermal evaporation
reducing agent
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 29
  • No :7
  • Pages :432-436
  • Received Date : 2019-05-20
  • Revised Date : 2019-06-23
  • Accepted Date : 2019-06-28
  • DOI :https://doi.org/10.3740/MRSK.2019.29.7.432
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