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

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
권호 표지

Preparation and Characterization of CdTe Quantum Dots

CdTe 양자점 합성과 물리적 특성 분석

  • Kim, Hyun-Suk (Department of Electrical Engineering, Korea University) ;
  • Song, Hyun-Woo (Department of Electrical Engineering, Korea University) ;
  • Cho, Kyung-Ah (Department of Electrical Engineering, Korea University) ;
  • Kim, Sang-Sig (Department of Electrical Engineering, Korea University)
  • Published : 2002.11.07
Download PDF
⟨ Previous Next ⟩

Abstract

CdTe quantum dots(QDs) were synthesized in aqueous solution by colloidal method. Photoluminescence(PL) spectra of the synthesized CdTe QDs revealed the intensity of PL peaks was stronger as the condensation time was longer. This result was thought because annealing effect by thermal energy transferred during condensation eliminated defects which act as traps and recombination centers in CdTe particle. PL intensity has stron dependence of Te precursor concentration. It confirmed the ratio of Te ion to Cd ion added during synthesis affected the particle size and size distribution of the CdTe QDs. Finally, the synthesized CdTe QDs were identified to be cubic structured CdTe quantum dots by X-ray diffraction(XRD).

Keywords