Fabrication of $Cu_xSe$ thin films by selenization of $Cu_xSe$ nanoparticles prepared by a colloidal process

CIS 태양전지용 이원 화합물 $Cu_xSe$ 나노입자를 이용한 $Cu_xSe$ 박막 제조

  • 김균환 (한국에너지기술연구원 태양전지연구단, 충남대학교) ;
  • 안세진 (한국에너지기술연구원 태양전지연구단) ;
  • 윤재호 (한국에너지기술연구원 태양전지연구단) ;
  • 곽지혜 (한국에너지기술연구원 태양전지연구단) ;
  • 김도진 (충남대학교 재료공학과) ;
  • 윤경훈 (한국에너지기술연구원 태양전지연구단)
  • Published : 2009.06.25

Abstract

This report summarizes our recent efforts to produce large-grained CIGS materials from porous nanoparticle thin films. In our approach, a $Cu_xSe$ nanoparticle colloid were first prepared by reacting a mixture of CuI in pyridine with $Na_2Se$ in methanol at reduced temperature. purified colloid was sprayed onto heated molybdenum-coated sodalime glass substrates to form thin film. After thermal processing of the thin film under a selenium ambient. $Cu_xSe$ colloid and thin film were characterized by scanning electron microscopy, x-ray diffraction. The optical(direct) band gap energy of $Cu_xSe$ thin films is 1.5 eV.

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