In summary, we have developed the exciplex–triplet energy transfer mechanism for OLEDs. So far, we have successfully fabricated very low power, long-lived OLEDs that have emission colors ranging from green to red. In the next stages of our work, we intend to produce a blue OLED using our approach. Although the realization of a blue PHOLED is widely regarded as implausible, we believe that our ExTET architecture can be used to overcome this limitation.

Satoshi Seo
Semiconductor Energy Laboratory Co., Ltd
Atsughi, Japan

http://spie.org/newsroom/6688-organic-leds-wi...ID=x120340