We fabricate the hybrid films of colloidal CdSe/ZnS quantum dots (QDs) and poly(9-vinylcarbazole) (PVK) sandwiched between two electrodes. The voltage and temperature dependences of the electroluminescence (EL) are measured. The quantum-confined Stark effect of colloidal QDs is clearly observed. To explore the mechanism in the QD EL, hybrid films are fabricated with different concentrations of colloidal QDs. Electrons and holes are proposed to be separately transported in QDs and PVK, respectively.
We fabricate the hybrid films of colloidal CdSe/ZnS quantum dots (QDs) and poly(9-vinylcarbazole) (PVK) sandwiched between two electrodes. The voltage and temperature dependences of the electroluminescence (EL) are measured. The quantum-confined Stark effect of colloidal QDs is clearly observed. To explore the mechanism in the QD EL, hybrid films are fabricated with different concentrations of colloidal QDs. Electrons and holes are proposed to be separately transported in QDs and PVK, respectively.
WANG Zhi-Bing;ZHANG Jia-Yu;CUI Yi-Ping;YE Yong-Hong. Effect of Electrical Field on Colloidal CdSe/ZnS Quantum Dots[J]. 中国物理快报, 2008, 25(12): 4435-4438.
WANG Zhi-Bing, ZHANG Jia-Yu, CUI Yi-Ping, YE Yong-Hong. Effect of Electrical Field on Colloidal CdSe/ZnS Quantum Dots. Chin. Phys. Lett., 2008, 25(12): 4435-4438.
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2008, Vol. 25 
