Enhancing Charge Injection and Device Integrity in Organic LEDs

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-04ER83894
Agency Tracking Number: 75905S04-I
Amount: $749,942.00
Phase: Phase II
Program: SBIR
Awards Year: 2005
Solicitation Year: 2004
Solicitation Topic Code: 35 b
Solicitation Number: DOE/SC-0072
Small Business Information
15 Cabot Rd., Woburngton, MA, 01801
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 King Wang
 (978) 694-1006
Business Contact
 Lei Zhang
Title: Dr.
Phone: (978) 694-1006
Email: lzhang@agiltron.com
Research Institution
75905S Solid state lighting based on organic light emitting diodes (OLED) offers significant gains in power efficiency, color quality, and lifetime, with less cost and environmental impact than traditional incandescent and fluorescent lights. However, currently available OLED devices do not meet the power efficiency and lifetime requirements for general lighting. Among several limiting factors, two very important ones are: (1) non-efficient and non-balanced charge injection and (2) poor device structural stability. This project will develop innovative, low cost, OLED anode surface modification technology, which will increase device energy efficiency by 5 to 10 times, and simultaneously promote significant thermal stability and long life for the device. In Phase I, anode surface modification agents TPD-(SiCl3)2 and TPD-[Si(OCH3)3]2 were successfully synthesized with high yield and purity. Improvements of approximately 200% in luminance and 50% in energy efficiency were achieved with these materials compared to industry standard, PEDOT-PSS. In Phase II, the TPD-(SiCl3)2 and TPD-[Si(OCH3)3]2 synthesis processes will be optimized for OLED polymers and scaled up cost-effectively to 6 inch wafers. Commercial Applications and Other Benefits as described by the awardee: The novel substrates should improve OLED performance and help it realize its potential applications: solid state lighting, high brightness image displays, sign indicators, automobile displays, and wearable electronics.

* Information listed above is at the time of submission. *

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