한국수소및신에너지학회논문집 (Transactions of the Korean hydrogen and new energy society)

  • 제32권6호
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  • Pages.663-668
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  • 2021
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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양자점 감응 태양전지의 Cu2S 상대 전극 제작조건 최적화

Optimization of Fabrication Conditions for Cu2S Counter Electrodes of Quantum Dot-Sensitized Solar Cells

  • 정성목 (단국대학교 화학공학과) ;
  • 하승범 (단국대학교 화학공학과) ;
  • 서주원 (단국대학교 화학공학과) ;
  • 김재엽 (단국대학교 화학공학과)
  • JUNG, SUNG-MOK (Department of Chemical Engineering, Dankook University) ;
  • HA, SEUNG-BEOM (Department of Chemical Engineering, Dankook University) ;
  • SEO, JOO-WON (Department of Chemical Engineering, Dankook University) ;
  • KIM, JAE-YUP (Department of Chemical Engineering, Dankook University)
  • 투고 : 2021.11.25
  • 심사 : 2021.12.16
  • 발행 : 2021.12.30
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초록

For the development of highly efficient quantum dot-sensitized solar cells (QDSCs), it is important to enhance the electrocatalytic activity of the counter electrodes (CEs). Herein, a fabrication process of Cu2S CEs are optimized for the development highly efficient QDSCs. The surface of brass film is treated with HCl solution to prepare the Cu2S CEs, and the concentraion as well as the temperature of HCl solution are controlled. It is found that the uniformity for the thickness of prepared Cu2S CEs is enhanced when the diluted HCl solution is used, compared to the HCl solution of standard concentration. In addition, the electrocatalytic activity of the Cu2S CEs is also increased with the modificed process, which is confirmed by impedance data and Tafel polarization curves. As a result, the photoconversion efficiency of QDSCs is improved from 4.49% up to 5.73%, when the concentraion and temperature of the HCl treatment are efficiently optimized.

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참고문헌

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