The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 2006
Filed:
Aug. 13, 2003
Guillermo C. Bazan, Santa Barbara, CA (US);
Jacek Ostrowski, Santa Barbara, CA (US);
Alexander Mikhailovsky, Ventura, CA (US);
Monica Katiyar, Kanpur, IN;
Guillermo C. Bazan, Santa Barbara, CA (US);
Jacek Ostrowski, Santa Barbara, CA (US);
Alexander Mikhailovsky, Ventura, CA (US);
Monica Katiyar, Kanpur, IN;
The Regents of the University of California, Oakland, CA (US);
Abstract
Optoelectronic devices and methods for their fabrication having enhanced and controllable rates of the radiative relaxation of triplet light emitters are provided exemplified by organic light emitting devices based on phosphorescent materials with enhanced emission properties. Acceleration of the radiative processes is achieved by the interaction of the light emitting species with surface plasmon resonances in the vicinity of metal surfaces. Non-radiative Förster-type processes are efficiently suppressed by introducing a transparent dielectric or molecular layer between the metal surface and the chromophore. For materials with low emission oscillator strengths (such as triplet emitters), the optimal separation distance from the metal surface is determined, thus suppressing energy transfer and achieving a significant acceleration of the emission rate.