Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Structural and optical properties of ZnO depending on Cd content

Cd 함량 변화에 따른 ZnO의 구조적, 광학적 특성 변화에 관한 연구

  • Kang, Hong-Seong (Dept. of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Jae-Won (Dept. of Electrical and Electronic Engineering, Yonsei University) ;
  • Lim, Sung-Hoon (Dept. of Electrical and Electronic Engineering, Yonsei University) ;
  • Chang, Hyun-Woo (Dept. of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Gun-Hee (Dept. of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Jong-Hoon (Dept. of Electrical and Electronic Engineering, Yonsei University) ;
  • Lee, Sang-Yeol (Dept. of Electrical and Electronic Engineering, Yonsei University)
  • 강홍성 (연세대학교 전기전자공학과) ;
  • 김재원 (연세대학교 전기전자공학과) ;
  • 임성훈 (연세대학교 전기전자공학과) ;
  • 장현우 (연세대학교 전기전자공학과) ;
  • 김건희 (연세대학교 전기전자공학과) ;
  • 김종훈 (연세대학교 전기전자공학과) ;
  • 이상렬 (연세대학교 전기전자공학과)
  • Published : 2005.05.13
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Abstract

$Zn_{1-x}Cd_xO$ thin films were grown on (0001) sapphire substrates by pulsed laser deposition. The energy bandgap of $Zn_{1-x}Cd_xO$ films decreases withincreasing Cd content. An increase of Cd content also leads to the emission broadening and degraded crystallinity. The absorption edge and ultraviolet emission peak shift to lower energy from 3.357 eV to 3.295 eV and 3.338 eV to 3.157 eV, respectively, with increasing Cd content from 0.3% to 3%. The Stokes' shift between the absorption and emission indicates the increase of localization of exciton with Cd content.

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