Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Preparation and Characteristics of Elongated CdSe nanoparticles

CdSe 나노 입자의 이방성 구조 제어 및 특성연구

  • Kim, Shin-Ho (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Myoung-Guk (Korea Institute of Energy Research, Solar Cells Research Center) ;
  • Kim, Yang-Do (School of Materials Science and Engineering, Pusan National University)
  • 김신호 (부산대학교 재료공학부) ;
  • 박명국 (한국에너지기술연구원 태양전지연구센터 CIS태양전지 실험실) ;
  • 김양도 (부산대학교 재료공학부)
  • Published : 2008.06.28
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Abstract

Elongated CdSe nanoparticles with a diameter of 3-7nm have been successfully synthesized using two surfactants of trioctylphospine (TOP) and hexadecylamine (HDA) at $160^{\circ}C$. The formation of elongated CdSe nanoparticles is possibly due to the cooperative effects from both the different binding capability of two surfactants (TOP and HDA) and intrinsically anisotropic crystal structure of the CdSe. The electron diffraction pattern of CdSe nanoparticles revealed the formation of wurzite phase. The CdSe samples showed red-shifted wavelength from 560 to 580nm with increasing the refluxing time due to the gradual growth of CdSe nanoparticles. The relatively broad absorption band can be attributed to the surface state of CdSe nanoparticles. The possible formation mechanism of elongated CdSe nanoparticles was proposed and the characteristics of CdSe have been discussed as well.

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