Research on centrifugal sedimentation for improving luminous flux of the quantum-dots LED devices
Although the quantum-dots(QDs)light-emitting diode(LED)devices have become popular in general lighting,the better light efficiency is always desirable in the industry.In this paper,a centrifugal sedimentation method was utilized to improve the luminous flux of a white light emitting diode(WLED)with the QDs.The parameters of the centrifugation including different centrifugal speed and time are optimized.Result shows that the maximum enhancement of the luminous flux is 12.4%under a centrifugal speed of 3 Krpm for 3 minutes compared with the conventional LED sample.After the centrifugal sedimentation,the fluorescent structure(phosphors and QDs)are redistributed,resulting in the growth of the blue and green light output.The results indicate that the centrifugal sedimentation process has excellent luminous flux improvement for the QDs LED devices,which will accelerate the application process of the quantum dots.
Centrifugal sedimentation light-emitting diodes quantum dots
Caiman Yan Huiyu Wang Kai Cao Dongqiang Fan Jiasheng Li Zongtao Li Xingrui Ding
Key Laboratory of Surface Functional Structure Manufacturing of Guangdong High Education Institutes,South China University of Technology,Guangzhou 510641,China.
国际会议
上海
英文
1437-1441
2018-08-08（万方平台首次上网日期，不代表论文的发表时间）