Case Study: Konica Minolta achieves 50% reduction in plasmon light loss and improved OLED efficiency with COMSOL Multiphysics

Konica Minolta - Customer Case Study

Konica Minolta, a leader in OLED development, confronted large light‑losses in its organic LEDs caused mainly by surface plasmon polariton (SPP) coupling at the metal cathode—accounting for roughly 40% of emitted light lost. Senior researcher Leiming Wang and his team at Konica Minolta Laboratory USA turned to numerical simulation to analyze emission, loss mechanisms, and design options using Comsol’s COMSOL Multiphysics software.

Using Comsol’s COMSOL Multiphysics, the team modeled flat and nanograting cathodes, varied geometric parameters and dipole orientations, and ran power‑flow analyses to quantify out‑coupled light. The optimized nanograting cathode disrupted SPP formation and cut plasmon losses by about 50%, significantly improving light out‑coupling and guiding Konica Minolta to higher‑efficiency OLED designs.

Konica Minolta

Leiming Wang

Senior Researcher