• 제목/요약/키워드: 황화아연계 형광체

검색결과 1건 처리시간 0.017초

분산형 전계발광 소자의 발광 특성 (Emission Characteristics of Power Type Electroluminescent Device)

  • 권순석;임기조;박수길;김현후;류부형;김용주
    • E2M - 전기 전자와 첨단 소재
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    • 제10권2호
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    • pp.150-155
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    • 1997
  • Powder type electroluminescent device(P-ELD) in this study was prepared by printing method. P-ELDs were basically composed of phosphor, insulator and transparent conducting layer. The phosphor powder was prepared by sintering the mixture of ZnS as a host, Cu as an activator, and NaCl as a flux for co-activator and enhancement of growth of the phosphor particles. The phosphor layer was made by printing the paste of the cyanoethylpullan as a binder and the ZnS system phosphor powder. In order to evaluate the luminescence characteristics of ZnS P-ELD, applied voltage - luminance(V-L), frequency-luminance(f-L), and relative luminance spectra(L- .lambda.) characteristics were measured. The experimental results show that luminance increased with increasing the applied voltage and frequency. It can be explained in terms of the potential barrier formed between ZnS and CuS. Two emission peaks in luminance-wavelength spectra measured at applied voltage of 100 $V_{rms}$ were observed at 500nm as a primary peak and 460nm as a secondary peak, respectively.y.

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