Optoelectronic Devices Using Blends of CdSe Nanocrystals and Poly ( N-vinylcarbazole)
CdSe nanocrystals were synthesized in aqueous solution by using L-cysteine hydrochloride as the stabilizer, which were transferred from aqueous solution into organic solvent by using a surfactant. Optoelectronic devices were fabricated by using the blends of CdSe nanocrystals and poly( N-vinylcarbazole) (PVK) as an emissive layer, and the optoelectronic properties of the device were studied. The EL peak of the device shifted to the longer wavelength with the increasing mass ratio of CdSe to PVK, and a little blue-shift was observed as the applied voltages increased, suggesting a more PVK contribution to the EL spectra at higher applied voltage. The threshold voltage of the device was about 7 V and the maximum brightness of the device reached 22 cd m -2 at the applied voltage of 16 V.
Optoelectronic Device CdSe Nanocrystals Poly (N-vinylcarbazole) Electroluminescence
Aiwei Tang Feng Teng Sha Xiong Bin Feng Yan Wang Yanbing Hou
Key laboratory of Luminescence and Optical Information, Ministry of Education,Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, China
国际会议
上海
英文
2162-2165
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）