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A simple method for the photometric characterization of organic light-emitting diodes

2022

A simple method for the photometric characterization of organic light-emitting diodes (OLEDs) is reported. It is based on the indirect measurement of the total emitted optical power by using a calibrated photodiode and the optical emission spectrum and space emission diagram of the OLED. From this and by measuring the current–voltage characteristic of the OLED all the relevant radiometric and photometric quantities can be extracted, including the external quantum efficiency. The usual method to collect all photons emitted by a LED source in the half space uses an integrating sphere with the LED source placed at the entrance hole and a photodiode (PD) placed at an exit hole at some point on …

HistoryPolymers and PlasticsMaterials ChemistryOrganic light-emitting diodes (OLEDs) External quantum efficiency Radiometry Photometry AlQ3Business and International ManagementElectrical and Electronic EngineeringCondensed Matter PhysicsSettore ING-INF/01 - ElettronicaIndustrial and Manufacturing EngineeringElectronic Optical and Magnetic MaterialsSolid-State Electronics
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