slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Efficient, Single-Layer Organic Light-Emitting Devices PowerPoint Presentation
Download Presentation
Efficient, Single-Layer Organic Light-Emitting Devices

Loading in 2 Seconds...

play fullscreen
1 / 1

Efficient, Single-Layer Organic Light-Emitting Devices - PowerPoint PPT Presentation


  • 94 Views
  • Uploaded on

Efficient, Single-Layer Organic Light-Emitting Devices. Timothy P. Lodge, University of Minnesota-Twin Cities, DMR 0819885. Principal Investigator Russell J. Holmes (IRG-2) Description and Significance

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Efficient, Single-Layer Organic Light-Emitting Devices' - lemuel


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Efficient, Single-Layer Organic Light-Emitting Devices

Timothy P. Lodge, University of Minnesota-Twin Cities, DMR 0819885

Principal Investigator

Russell J. Holmes (IRG-2)

Description and Significance

Efficient OLEDs often require the use of an intricate device architecture. Graduate student Nicholas Erickson has instead taken an alternative approach, focusing on the use of a doped, graded emissive layer (G-EML) architecture that permits high efficiency in devices comprising only a single layer. Device composition varies continuously from nearly 100% hole-transporting material (HTM) at the anode to nearly 100% electron-transporting material (ETM) at the cathode, with an emitter uniformly doped throughout the structure. Erickson has demonstrated efficient, single-layer OLEDs emitting in the blue, green, and red. The tunable gradient allows for the optimization of electron-hole charge balance and low-voltage operation while preserving charge and exciton confinement.

Gradient

Cathode

Anode

=ETM

=Phosphor

=HTM

Graded emissive layer (G-EML) OLED – The gradient provides charge and exciton confinement

G-EML OLEDs based on blue, green and red phosphorescent emitters