Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Optical and Structural Properties of Ammoniated GaOOH and ZnO Mixed Powders

암모니아 분위기에서 열처리된 GaOOH와 ZnO 혼합분말의 구조적·광학적 성질

  • Song, Changho (Midas System Co. Ltd.) ;
  • Shin, Dongwhee (Department of Materials Engineering, Research Center for Infotronic Materials and Devices Hanbat National University) ;
  • Byun, Changsob (Department of Materials Engineering, Research Center for Infotronic Materials and Devices Hanbat National University) ;
  • Kim, Seontai (Department of Materials Engineering, Research Center for Infotronic Materials and Devices Hanbat National University)
  • 송창호 (마이다스시스템(주)) ;
  • 신동휘 (한밭대학교 신소재공학과, 정보전자부품소재연구소) ;
  • 변창섭 (한밭대학교 신소재공학과, 정보전자부품소재연구소) ;
  • 김선태 (한밭대학교 신소재공학과, 정보전자부품소재연구소)
  • Received : 2012.08.02
  • Accepted : 2012.10.11
  • Published : 2012.11.27
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Abstract

The purpose of this study is to investigate the crystalline structure and optical properties of (GaZn)(NO) powders prepared by solid-state reaction between GaOOH and ZnO mixture under $NH_3$ gas flow. While ammoniation of the GaOOH and ZnO mixture successfully produces the single phase of (GaZn)(NO) solid solution within a GaOOH rich composition of under 50 mol% of ZnO content, this process also produces a powder with coexisting (GaZn)(NO) and ZnO in a ZnO rich composition over 50 mol%. The GaOOH in the starting material was phase-transformed to ${\alpha}$-, ${\beta}-Ga_2O_3$ in the $NH_3$ environment; it was then reacted with ZnO to produce $ZnGa_2O_4$. Finally, the exchange reaction between nitrogen and oxygen atoms at the $ZnGa_2O_4$ powder surface forms a (GaZn)(NO) solid solution. Photoluminescence spectra from the (GaZn)(NO) solid solution consisted of oxygen-related red-emission bands and yellow-, green- and blue-emission bands from the Zn acceptor energy levels in the energy bandgap of the (GaZn)(NO) solid solutions.

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