Phosphorescent organic light emitting devices for solid state lighting

Brian D'Andrade; Vadim Adamovich; Richard Hewitt; Mike Hack; Julie J. Brown

doi:10.1117/12.624370

8 October 2005 Phosphorescent organic light-emitting devices for solid-state lighting

Brian D'Andrade, Vadim Adamovich, Richard Hewitt, Mike Hack, Julie J. Brown

Proceedings Volume 5937, Organic Light-Emitting Materials and Devices IX; 59370I (2005) https://doi.org/10.1117/12.624370
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

A 6"x6" white lighting panel consisting of red, green and blue colored stripes of OLEDs emits >100 lm of optical power and has a maximum energy efficacy of 30 lm/W. Each colored stripe contains 7 serially connected OLEDs having an area of 1.37 cm², and there are 4 stripes per color, so there is a total of 84 devices. The external quantum efficiency of the red and blue OLEDs exceeds 20% and the blue OLED efficiency exceeds 5% when operated above 100 nits. Such high quantum efficiencies are achieved with an OLED architecture consisting of electrophosphorescent dopants, and at least four organic thin films layers: a hole injection layer, a hole transport layer, an emissive layer, a blocking layer, and an electron transport layer. The color coordinates of the panel can be varied between the constituent red, green, and blue color component coordinates of (0.14, 0.17), (0.31, 0.64), and (0.62, 0.38), respectively, by adjusting the intensity of each primary colors. Panel power efficiencies were measured at correlated color temperatures between 2,900 K and 5,700K, and the color rendering index was >80 in all cases because of the broad spectral output of the combined colors.

Citation Download Citation

Brian D'Andrade, Vadim Adamovich, Richard Hewitt, Mike Hack, and Julie J. Brown "Phosphorescent organic light-emitting devices for solid-state lighting", Proc. SPIE 5937, Organic Light-Emitting Materials and Devices IX, 59370I (8 October 2005); https://doi.org/10.1117/12.624370

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available