1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How to measure the external quantum efficiency of OLEDs?

  1. Mar 2, 2013 #1
    Hello PF,

    I am currently studying OLEDs (organic light emitting diodes) and have been reading many articles pertaining to the external quantum efficiency of these devices and the various extraction techniques used. In all of these articles, they state the increase of efficiency but do not state how it calculated.

    I have been trying to find documentation that describes the calculation for the external efficiency.

    I know that it has to do with a solid angle and critical angle (ITR).

    Does anybody have a clue? or know where to guide me?

  2. jcsd
  3. Mar 4, 2013 #2
    Your answer is in here: http://en.wikipedia.org/wiki/OLED

    Read it.
  4. Mar 5, 2013 #3
    I have...It says nothing about measuring the EQE.
  5. Mar 5, 2013 #4

    Yes you are right. I blindly posted it! :p

    Ok, see this Japanese Journal :


    Download the PDF.
    Last edited: Mar 5, 2013
  6. Mar 5, 2013 #5
    Ok. Thank you.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook