Threshold estimation of an organic laser diode using a rate-equation model validated experimentally with a microcavity OLED submitted to nanosecond electrical pulses

We propose a new model for the organic laser diode based on rate equations polarons, singlet and triplet excitons both host guest molecules, photon densities. The proposed is validated experimentally by comparing calculated measured optical responses in context of pulsed nanosecond electrical excitation high-speed μ-OLEDs limit weak micro-cavity effects. predict threshold current density as function quality factor, two material gain residual absorption values. elucidate crucial role played latter setting comment recently observed value ∼500 A/cm2 group Adachi [1]. Simulations that action under short pulse single-shot accompanied damped relaxation oscillations GHz regime. ultra-short experimental at 45 V are best reproduced numerically when Langevin recombination larger than usually literature consequence field dependence Poole-Frenkel law mobility.