Effect of Electrical Field on Colloidal CdSe/ZnS Quantum Dots

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2008,（12）
• 页码范围: 4435-4438
• 页数: 4页
• 语种: 英文

摘要

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 electrolumineseence (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.