Current Photovoltaic Research

Korea Photovoltaic Society (한국태양광발전학회)
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3-D Structured Cu2ZnSn (SxSe1-x)4 (CZTSSe) Thin Film Solar Cells by Mo Pattern using Photolithography

Mo 패턴을 이용한 3-D 구조의 Cu2ZnSn (SxSe1-x)4 (CZTSSe) 박막형 태양전지 제작

  • Jo, Eunjin (Optoelectronic(s) Convergence Research Center and Department of Materials Science & Engineering, Chonnam National University) ;
  • Gang, Myeng Gil (Optoelectronic(s) Convergence Research Center and Department of Materials Science & Engineering, Chonnam National University) ;
  • Shin, hyeong ho (Optoelectronic(s) Convergence Research Center and Department of Materials Science & Engineering, Chonnam National University) ;
  • Yun, Jae Ho (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Moon, Jong-ha (Optoelectronic(s) Convergence Research Center and Department of Materials Science & Engineering, Chonnam National University) ;
  • Kim, Jin Hyeok (Optoelectronic(s) Convergence Research Center and Department of Materials Science & Engineering, Chonnam National University)
  • 조은진 (전남대학교 신소재공학부) ;
  • 강명길 (전남대학교 신소재공학부) ;
  • 신형호 (전남대학교 신소재공학부) ;
  • 윤재호 (한국에너지기술연구원 신재생에너지연구본부) ;
  • 문종하 (전남대학교 신소재공학부) ;
  • 김진혁 (전남대학교 신소재공학부)
  • Received : 2017.02.11
  • Accepted : 2017.03.03
  • Published : 2017.03.31
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Abstract

Recently, three-dimensional (3D) light harvesting structures are highly attracted because of their high light harvesting capacity and charge collection efficiencies. In this study, we have fabricated $Cu_2ZnSn(S_xSe_{1-x})_4$ based 3D thin film solar cells on PR patterned Molybdenum (Mo) substrates using photolithography technique. Specifically, Mo patterns were deposited on PR patterned Mo substrates by sputtering and the thin Cu-Zn-Sn stacked layer was deposited over this Mo patterns by sputtering technique. The stacked Zn-Sn-Cu precursor thin films were sulfo-selenized to form CZTSSe pattern. Finally, CZTSSe absorbers were coated with thin CdS layer using chemical bath deposition and ZnO window layer was deposited over CZTSSe/CdS using DC sputtering technique. Fabricated 3-D solar cells were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF) analysis, Field-emission scanning electron microscopy (FE-SEM) to study their structural, compositional and morphological properties, respectively. The 3% efficiency is achieved for this kind of solar cell. Further efforts will be carried out to improve the performance of solar cell through various optimizations.

Keywords

References

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