High-Efficiency, Illumination Quality White OLEDs for Lighting

Investigating Organization
General Electric Global Research

Principal Investigator(s)
Mr. Joseph Shiang

Subcontractor
None

Funding Source
Building Technologies Program/NETL

Award
DOE Share: $2,860,883; Contractor Share: $1,226,093

Contract Period
01/04/05 - 03/31/08

GE is developing a novel organic device design and corresponding materials set that will directly result in white OLEDs capable of producing >45 LPW by the end of the program. To achieve the program goal, the team will expand the existing library of materials and designs, and develop the necessary processing expertise to produce OLED devices in which all of the spin-state and charge transport pathways are tightly controlled to convert 100% of the injected charge into a light suitable for use in a white light source.

In the program, GE developed several routes to the fabrication of multilayer devices.  In addition, GE developed new chemistries for polymer materials and emissive dopants.  By using these chemistries and multilayer technology, polymer OLEDs with different colors and external quantum efficiencies of >10% were built, and the fundamental feasability of the device concept demonstrated.   In addition,  devices that exhibit peak energy efficiencies of >8% w/w (optical  power divided by electrical power) were demonstrated for both red and blue solution processed OLED devices.

Content dated 2/08