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OLED with minimal plasmonic losses

Patent ·
OSTI ID:1735247
;

A top-emitting organic light emitting device (OLED) that comprises: a substrate having an inward side and an outward side; an OLED body that includes a transparent bottom electrode proximate to the inward side of the substrate, an organic emitting layer, and a transparent top electrode in that order; a non-metallic, diffuse reflective layer with a roughened top surface proximate to and facing the bottom transparent electrode; and a high refractive index waveguide layer. The diffuse reflective layer is positioned between the inward side of the substrate and the OLED body, and the waveguide layer is positioned between the diffuse layer and the bottom transparent electrode.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0007626
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI)
Patent Number(s):
10,770,690
Application Number:
16/189,088
OSTI ID:
1735247
Country of Publication:
United States
Language:
English

References (13)

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Enhancing waveguided light extraction in organic LEDs using an ultra-low-index grid journal January 2010
Enhanced Outcoupling in Organic Light-Emitting Diodes via a High-Index Contrast Scattering Layer journal August 2015
Unlocking the full potential of organic light-emitting diodes on flexible plastic journal October 2011
Highly efficient phosphorescent emission from organic electroluminescent devices journal September 1998
Simplified calculation of dipole energy transport in a multilayer stack using dyadic Green’s functions journal January 2007
Extremely Efficient White Organic Light-Emitting Diodes for General Lighting journal September 2014
Diffuse and Specular Reflectance from Rough Surfaces journal January 1998
Lifetime of an emitting molecule near a partially reflecting surface journal April 1974
Exceptionally efficient organic light emitting devices using high refractive index substrates journal January 2009
Small molecular weight organic thin-film photodetectors and solar cells journal April 2003
Very high-efficiency green organic light-emitting devices based on electrophosphorescence journal July 1999

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