Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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The Effects of Sodium Doping on the Electrical Properties of the Cu2ZnSn(S,Se)4 (CZTSSe) Solar Cells

용액법을 이용한 나트륨 도핑에 따른 Cu2ZnSnSe4 (CZTSSe) 박막의 합성 및 특성 평가

  • Shim, Hongjae (Department of Materials Science and Engineering, Chonnam National University) ;
  • Kim, Jihun (Department of Materials Science and Engineering, Chonnam National University) ;
  • Gang, MyungGil (Department of Materials Science and Engineering, Chonnam National University) ;
  • Kim, Jinhyeok (Department of Materials Science and Engineering, Chonnam National University)
  • 심홍재 (신소재공학과, 광전자융합기술연구소, 전남대학교) ;
  • 김지훈 (신소재공학과, 광전자융합기술연구소, 전남대학교) ;
  • 강명길 (신소재공학과, 광전자융합기술연구소, 전남대학교) ;
  • 김진혁 (신소재공학과, 광전자융합기술연구소, 전남대학교)
  • Received : 2018.07.17
  • Accepted : 2018.09.05
  • Published : 2018.10.27
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Abstract

$Cu_2ZnSn(S,Se)_4$ (CZTSSe) films were prepared on Mo coated soda lime glass substrates by sulfo-selenization of sputtered stacked Zn-Sn-Cu(CZT) precursor films. The precursor was dried in a capped state with aqueous NaOH solution. The CZT precursor films were sulfo-selenized in the S + Se vapor atmosphere. Sodium was doped during the sulfo-selenization treatment. The effect of sodium doping on the structural and electrical properties of the CZTSSe thin films were studied using FE-SEM(field-emission scanning electron microscopy), XRD(X-ray diffraction), XRF(X-ray fluorescence spectroscopy), dark current, SIMS(secondary ion mass spectrometry), conversion efficiency. The XRD, XRF, FE-SEM, Dark current, SIMS and cell efficiency results indicated that the properties of sulfo-selenized CZTSSe thin films were strongly related to the sodium doping. Further detailed analysis and discussion for effect of sodium doping on the properties CZTSSe thin films will be discussed.

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References

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