Title :
Influence of Alq3:C545T on Luminescence of Blue LED
Author :
Bi Changdong ; Zhang Fanghui ; Li Yanfei
Author_Institution :
Shaanxi Univ. of Sci. & Technol., Xian, China
Abstract :
Organic material Alq3:C545T was deposited on the glass By vacuum evaporation. The thicknesses were 0nm, 40nm, 80nm, 120 nm, 200 nm and 400 nm while the doping ratio of C545T was 2%. Light-emitting properties were researChed by blue LED radiating Organic film. The results show that blue LED chip will stimulate Alq3:c545T generating yellow and green Light in the spectral region of 500-600nm. With the increasing of thickness, radiation spectrum is improved. Meanwhile, Luminous efficiency and the flux of LED are increased significantly, which are 2.85 and 2.48 times of original, respectively, then red shift occurs. Through the C545T mixing test, we can see that mixing C545T(2%) into Alq3 would improve the luminous efficiency of LED significantly.
Keywords :
doping profiles; light emitting diodes; organic compounds; photoluminescence; red shift; thin films; vacuum deposition; Alq3:C545T; blue LED; doping ratio; luminescence; luminous efficiency; organic film; organic material; radiation spectrum; red shift; size 0 nm to 400 nm; vacuum evaporation; wavelength 500 nm to 600 nm; Energy states; Green products; Light emitting diodes; Luminescence; Organic materials; Phosphors; Physics; LED; luminescence; organic materials; radiation spectrum;
Conference_Titel :
Digital Manufacturing and Automation (ICDMA), 2011 Second International Conference on
Conference_Location :
Zhangjiajie, Hunan
Print_ISBN :
978-1-4577-0755-1
Electronic_ISBN :
978-0-7695-4455-7
DOI :
10.1109/ICDMA.2011.159
