Patent ID: 9655199
Date: 2017-05-16
CPC Classifications: C09K,H01L,H05B

Claim:
1. A light emitting system comprising a first organic light emitting device, the first organic light emitting device including: an anode; a cathode; a first organic emitting layer, disposed between the anode and the cathode, comprising a first emissive dopant having a peak wavelength of between 400 to 500 nanometers; and a second organic emitting layer, disposed between the anode and the cathode, comprising a second emissive dopant having a peak wavelength of between 400 to 500 nanometers, wherein the peak wavelength of the first emissive dopant is at least 4 nm less than the peak wavelength of the second emissive dopant, wherein the only organic emitting layers in the first organic light emitting device are the first organic emitting layer and the second organic emitting layer.