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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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CdSe/$TiO_2$ electrode of photoelectrochemical[PEC] cell for hydrogen production from water using solar energy

태양광과 물로부터 수소생산을 위한 광전기화학전지의 CdSe/$TiO_2$ 전극

  • Lee, Eun-Ho (Eco-Nano Research Center, Korea Institute of Science and technology) ;
  • Jung, Kwang-Deog (Eco-Nano Research Center, Korea Institute of Science and technology) ;
  • Joo, Oh-Shim (Eco-Nano Research Center, Korea Institute of Science and technology)
  • 이은호 (나노환경연구센터, 한국과학기술연구원) ;
  • 정광덕 (나노환경연구센터, 한국과학기술연구원) ;
  • 주오심 (나노환경연구센터, 한국과학기술연구원)
  • Published : 2005.06.15
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Abstract

Cadmium selenide is one of the group IIb-VI compounds, which is the promising semiconductor material due to its wide range of technological applications in optoelectronic devices such as photoelectrochemical cells, solid state solar cells, thin film photoconductors etc. CdSe has optical band gap of 1.7-1.8eV and proper conduction band edge for water splitting. CdSe films are coated with small thickness(20-50nm) nanocrystalline $TiO_2$ film by electrodeposition or chemical bath deposition methods and PEC properties of CdSe and CdSe/$TiO_2$ sandwich structure are studied. The photoactivity of CdSe and CdSe/$TiO_2$ films deposited on titanium substrate is studied in aqueous electrolyte of 1M NaOH solution. Photocurrent and photovoltage obtained were of the order of 2-4 mA/$cm^2$ and 0.5V, respectively, under the intensity of illumination of 100 mW/$cm^2$.

Keywords

References

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