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Optoelectronic Characteristics of Transparent Cu2O Films Spin-coated on Glass Substrates

스핀코팅으로 제작된 Cu2O 필름의 광전기적 특성

  • 곽기열 (고려대학교 미세소자공학협동) ;
  • 조경아 (고려대학교 전기전자전파공학부) ;
  • 김상식 (고려대학교 전기전자전파공학부)
  • Published : 2010.01.01

Abstract

$Cu_2O$ nanoparticles-based films are fabricated by spin-coating on glass substrates and their optoelectronic characteristics are investigated in this study. The $Cu_2O$ films are nearly all-transparent as high as 98% in a wavelength range from 400 nm to 900 nm and three exciton peaks associated with the sublevels in the conduction band are observed at the wavelengths shorter than 400 nm in the absorption spectrum. Under the illumination of the 325 nm wavelength light, the photocurrent efficiency of the $Cu_2O$ film is $1.8\times10^5 {\mu}A/W$ at a voltage of 2.5 V in air.

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