# Radiant power spectrum from electroluminence spectrum

1. ### chrisewolf

2
Hello everyone!

I am having a bit of a problem understanding a paper. Usually the authors use the electroluminescent spectrum to describe an emitter, but in this paper the radiant power is constantly cited.

What is the relation of these two?

Usually the EL spectrum is a.u. vs wavelength and radiant power is (in this paper!) W/(sr m^2) (usually called radiance).

Can these two quantities be converted (as the time information is not known)?

best regards,
Chris