Enhancing Charge Injection and Device Integrity in Organic LEDs (Phase II)

Investigating Organization
Agiltron, Inc

Principal Investigator(s)
Dr. King Wang, qwang@agiltron.com, (781) 935-1200 ext.114

Subcontractor
None

Funding Source
Small Business Innovation R&D, Phase II

Award
DOE Share: $749,942

Contract Period
7/13/05 - 7/10/07

Agiltron is developing an innovative, low-cost anode surface modification technology for OLEDs, designed to significantly increase device efficiency and improve device stability and lifetime as well. Researchers have developed stable, high-yield, high hole transporting molecules that can cross-link to form ultrathin coatings. These coatings will be used to modify the surface of the indium tin oxide (ITO) anode of the OLED to enhance the injection of holes into the active area and increase device stability. Significantly, and in parallel, Agiltron is also developing a low-cost mist deposition approach for OLED fabrication that is scalable into a continuous mass production manufacturing technique. In this Phase II, we are continuing our development efforts that were begun in Phase I, where the feasibility was demonstrated through a continuous optimization and scale-up of air-stable and cross-linkable HTL materials synthesis and development of low-cost, large-scale mist deposition processes for polymer OLED fabrication. Agiltron’s hole transport materials have been evaluated with promising results in a real device environment by GE’s Solid State Lighting Group. The test results show Agiltron materials are more robust at high brightness conditions than current industry standard PEDOT, which indicates that more stable devices and longer device a lifetimes can be expected. Agiltron’s approach represents an unparalleled opportunity to contribute to the OLED performance target goal of 100 lumens per watt and lifetime of 50,000 hours, and the cost target goal of $3.00 per 1000 lumens.

Content dated 2/08