Lead Performer: Arizona State University – Tempe, AZ
DOE Total Funding: $664,785
Cost Share: $170,547
Project Term: October 1, 2011 – September 30, 2015
Funding Opportunity: Solid State Lighting Core Technology Funding Opportunity Announcement (DE-FOA- 0000329)
This project will demonstrate an efficient and stable white OLED using a single emitter on a planar glass substrate with no outcoupling enhancement, a luminous efficiency of at least 50 lm/W, and an operational lifetime over 10,000 hours at 1,000 candelas per square meter (cd/m2).
Current WOLED technology requires the use of multiple emissive materials, which are expensive to manufacture and also generate color instability and color aging issues, affecting WOLED performance and operational lifetime. Simplifying device fabrication, increasing the robustness of materials, and providing more cost-effective alternates to current iridium-based phosphorescent emitters can reduce WOLED fabrication costs and improve performance.
The project will focus on two main areas: 1) development of efficient and stable square planar phosphorescent emitters and ambipolar host materials; and 2) device optimization using stable injection materials to balance charge in the recombination zone.
Nationwide, lighting buildings costs $58 billion a year and consumes about 22% of all electricity generated. A single-doped WOLED that addresses manufacturing and performance issues can help meet the targeted cost of organic solid-state lighting established in the U.S. Department of Energy Building Technologies Office Multi-Year Research, Development, and Demonstration Plan.
DOE Technology Manager: Jim Brodrick
Lead Performer: Jian Li, Arizona State University