Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2004.07a
- /
- Pages.60-62
- /
- 2004
Electroluminescence of CdTe nanoparticles
CdTe 나노입자를 이용한 EL구조 및 특성
- Kim, Jin-Hyong (Department of Electrical Engineering, Korea University) ;
-
Cho, Kyoung-Ah
(Department of Electrical Engineering, Korea University)
;
- Kim, Hyun-Suk (Department of Electrical Engineering, Korea University) ;
- Lee, Joon-Woo (Department of Electrical Engineering, Korea University) ;
-
Park, Byoung-Jun
(Department of Electrical Engineering, Korea University)
;
-
Kim, Sang-Sig
(Department of Electrical Engineering, Korea University)
- 김진형 (고려대학교 전기공학과) ;
-
조경아
(고려대학교 전기공학과)
;
- 김현석 (고려대학교 전기공학과) ;
- 이준우 (고려대학교 전기공학과) ;
-
박병준
(고려대학교 전기공학과)
;
-
김상식
(고려대학교 전기공학과)
- Published : 2004.07.05
Abstract
CdTe nanoparticles were synthesized in aqueous solution by colloidal method. The absorption and photoluminescence(PL) spectrum of the synthesized CdTe nanoparticles revealed the strong exitonic peak in the visible region. Electroluminescence of CdTe nanoparticles were observed in the structure of Al/CdTe/PVK/ITO and Al/CdTe/PEDOT/ITO that were fabricated by spin coating of polyvinylcarvazole(PVK), poly(3,4-ethylenedioxythiophene(PEDOT) and CdTe nanoparticles. The turn-on voltages of Al/CdTe/PVK/ITO and Al/CdTe/PEDOT/ITO for electroluminescence were 5V and 6V, respectively. We identified that the reduction of turn-on voltage resulted from the increase of hole injection into the hole transport layer due to lower ionization energy of PEDOT.