Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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UV emission of ZnO:Er films prepared by ultrasonic spray pyrolysis

초음파분무법으로 제조한 ZnO:Er막의 UV 발광 특성

  • Choi, Mu-Hee (Department of Electrical Engineering and ERI, Gyeongsang National University) ;
  • Ma, Tae-Young (Department of Electrical Engineering and ERI, Gyeongsang National University)
  • 최무희 (경상대학교 전기공학과 및 경상대학교 공학연구원) ;
  • 마대영 (경상대학교 전기공학과 및 경상대학교 공학연구원)
  • Published : 2007.07.31
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Abstract

The films of Er-doped ZnO (ZnO:Er) were prepared onto MgO wafers by ultrasonic spray pyrolysis at $550^{\circ}C$. The concentration of Er in the deposition source varied from 0.5 wt% to 3.0 wt%. The crystallographic properties and surface morphologies of the films were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. The properties of photoluminescence (PL) for the films were investigated by dependence of PL spectra on the Er concentration in the films. The films were grown as polycrystalline with a dominant direction of [002]. The grain size of the films were reduced by Er-doping. Er-doping enhanced the ultraviolet emission of ZnO:Er films. The ZnO:Er films prepared with the deposition source of 2.0 wt% Er showed the strongest ultraviolet light emission peak among the films in this study.

Keywords

References

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