Title :
Lifetime of blue polymer LEDs
Author :
Leadbeater, M.L. ; Patel, N.K. ; Murphy, C.E. ; Roberts, M. ; Butler, T.P. ; Forsythe, D. ; Archer, R.S. ; Phillips, N.L. ; Ciná, S. ; Towns, C.
Author_Institution :
Cambridge Display Technol. Ltd, UK
Abstract :
Summary form only given. We have shown lifetimes in excess of 5000 hours for a blue material, which is considered sufficient for some first generation applications. This improvement in lifetime has been partly due to the introduction of new polymer materials with higher glass transition temperatures and partly to the optimisation of device fabrication procedures including the use of a baking step in the process, which leads to further lifetime enhancements.
Keywords :
brightness; glass transition; optical polymers; organic light emitting diodes; polymer films; 5000 hour; baking step; blue light emitting polymer; blue polymer LEDs; device fabrication procedure optimisation; first generation applications; glass transition temperatures; lifetime enhancement; polymer materials; Charge carrier processes; Cities and towns; Displays; Glass; Light emitting diodes; Organic light emitting diodes; Polymers; Stability; Temperature; Voltage;
Conference_Titel :
Lasers and Electro-Optics Society, 2002. LEOS 2002. The 15th Annual Meeting of the IEEE
Print_ISBN :
0-7803-7500-9
DOI :
10.1109/LEOS.2002.1134018
