Research Blogs
Angular Resolved Photoluminescence and Electroluminescence of light emitting materials
Setfos can analyze angular-dependent PL data collected by Phelos to get information about the properties of an organic emitter, such as the orientation of the dipoles and the width of the emission zone. With this analysis, we are able to optimize the characteristics of our OLEDs for high EQEs.
EQE optimization For a Top-Emitting OLED
The external quantum efficiency (EQE) is the number of photons emitted by an OLED per number of injected charges. Photons are generated in the device emitting layer (EML), but most of the light is not escaping the device because of thee main loss mechanisms: Total Internal Reflection, Absorption Losses and Surface Plasmon Polaritons (SPPs). In this example, we are showing how to use Setfos to optimize the geometry of an OLED towards high light-outcoupling efficiency.