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[IEEE 2018 International Conference on Simulation of Semiconductor Processes and Devices (SISPAD) - Austin, TX, USA (2018.9.24-2018.9.26)] 2018 International Conference on Simulation of Semiconductor Processes and Devices (SISPAD) - Dynamical space partitioning for acceleration of parallelized lattice kinetic Monte Carlo simulations
摘要： A new dynamical space partitioning method is presented in a parallelized lattice kinetic Monte Carlo (kMC) simulator to overcome the loss of parallel efficiency found in other parallelized kMC simulators. The dynamical partitioning of the simulation cell allows better load balancing through all threads hence reducing time consuming events during the simulation. The new method is evaluated against both hypothetical and real cases. In both cases, minimal differences between serial and parallelized simulations are found. In real cases, other code optimizations may be needed to further improve the parallel efficiency.
关键词： shared memory,stochastic,nano-scale,FinFET,kMC,parallelization efficiency,OpenMP
更新于2025-09-23 15:22:29
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52.3: Disentangling Excitonic Loss Mechanisms in TADF‐Type OLEDs Using Kinetic Monte Carlo Simulations
摘要： To demonstrate the power of Bumblebee, we will focus in this talk on thermally-activated delayed fluorescence (TADF) materials, which are also used in new generation hyperfluorescent (HF) OLEDs. In principle, obtaining an internal quantum efficiency (IQE) approaching 100% combined with a small efficiency roll-off should be feasible. However, the actual device performance depends on the balance between the transfer of singlet and triplet excitons from the TADF emitters to the fluorescent molecules, and on the role of excitonic loss processes. Here we demonstrate how KMC simulations can be used to successfully analyze, predictively model, and ultimately enhance the quantum efficiency of TADF-based OLEDs and their roll-off at large current densities. We will show how the concentration of the fluorescent dye affects the device performance and which changes in the properties of this material are needed to boost the device efficiency, thereby providing guiding directions for chemical material development and improvement.
关键词： TADF,OLED,KMC,Simulations
更新于2025-09-11 14:15:04