White electrophosphorescence from semiconducting polymer blends

US7830085B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Xiong Gong · Goleta, US
• Wanli Ma · Nanhu, CN
• Jacek Ostrowski · Lompoc, US
• Guillermo C. Bazan · Lompoc, US
• Daniel Moses · San Diego, US
• Alan J. Heeger · Lompoc, US

Key dates

• Filing date: Oct 6, 2003
• Grant date: Nov 9, 2010
• Expiry date: Oct 6, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24942

Abstract

White light-emitting electrophosphorescent polymeric light-emitting diodes (PLEDs) are demonstrated using semiconducting polymers blended with organometallic emitters as emissive materials in a common region. These materials may be cast from solution. The CIE coordinates, the color temperatures and the color rendering indices of the white emission are insensitive to the brightness, applied voltage and applied current density.