Zwitterionic Electron Injection Layers for Highly Efficient Polymer LEDs

Tech ID: 21391 / UC Case 2008-801-0

Brief Description

A novel composition for electron injection layers applicable in PLEDs.

Background

Since charge injection from a metal electrode into light-emitting diodes (LEDs) remains a significant impediment to device performance, there is a need for improved electron injection layers in order to increase polymer LED (PLED) efficiency.

Description

Researchers at the University of California, Santa Barbara have developed a novel composition for electron injection layers applicable in PLEDs. Electron injection layers of this composition can be deposited via solution methods without disturbing the underlying layer. Due to superior electron injection, PLEDs utilizing this technology are more efficient and perform up to three times better than LEDs with barium/aluminum cathodes.

Advantages

Higher luminance efficiency as compared to LEDs with barium/aluminum cathodes

Up to 3X the performance of LEDs with barium/aluminum cathodes due to superior electron injection

Deposition via solution methods without disturbance of the underlying layer

Applications

Polymer LEDs

Organic Optoelectronic Devices

This technology is available for licensing.

Patent Status

Country	Type	Number	Dated	Case
United States Of America	Issued Patent	8,367,839	02/05/2013	2008-801

Inventors

Bazan, Guillermo C.
Li, Huaping
Xu, Yunhua

Other Information

Categorized As

Related cases

2008-801-0

Keywords

Polymer LED, PLED

Contact

Shaun R. Juncal / juncal@tia.ucsb.edu / tel: View Phone Number. Please reference Tech ID #21391.

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UNIVERSITY of CALIFORNIA, SANTA BARBARA