What is Bumblebee?

Bumblebee is our unprecedented simulation software for organic electronics such as OLEDs,
OPV and OFETs.

Bumblebee is based on a kinetic Monte Carlo approach and simulates all
relevant opto-electronic processes in disordered materials.

With its intuitive web interface, Bumblebee allows our customers to replace a huge part of
traditional R&D and its trial-and-error approach by computer simulations!

Why Bumblebee?

Bumblebee allows one to simulate the interplay between all electronic and excitonic processes in OLEDs, OPV and OFETs, at the molecular scale, in all three dimensions, and from the nanosecond timescale to the full device lifetime. The simulations predict the electrical characteristics, efficiency, color point and lifetime of devices, based on physically meaningful material parameters, which may be obtained either from a few dedicated experiments or from quantum chemistry. The performance of any combination of materials and stack architectures, under a wide range of operational conditions, can be predicted.

Our powerful features

Material evaluation

Research excellence

Full 3-D device model

Electrical characteristics
Color point
Material degradation study
OLED stacks
Organic photovoltaics
Organic field-effect transistors
Organic photodetectors
3D molecular scale simulations
Mechanistic device modelling
Full lifetime simulations
Analyze, predict and improve device performance

Our powerful features

  • Effects of disorder and traps
  • Non-uniform currents
  • Mixed-matrix emissive layer
  • Any 3D structure possible, including
    • graded concentration profiles
    • laterally non-uniform structures
    • rough, intermixed interfaces
  • Charge accumulation near interfaces
  • Charge carrier loss due to imperfect blocking
  • Voltage loss across transport layers
  • Dark-injection studies

  • Roll-off due to polaron quenching and exciton annihilation
  • Shape of the recombination zone
  • Color-tuning using co-doping
  • Delayed fluorescence, TADF, and hyperfluorescence
  • Transient electroluminescence
  • Consequences of degradation processes to device performance

The intuitive interface of Bumblebee guides you through the complete simulation workflow, from preparing your simulations to the post-processing, all from your web browser.
  • Data security is our priority
  • Integrated post-processing features to help you visualize your results immediately and choose which data to extract.
  • All graphs and data can be saved on your computer and further processed on your chosen system.

  • Mobility studies, including
    • anisotropy
    • molecular doping
    • any shape of the density of states
    • any type of energetic correlation
    • any type of the positional disorder
  • Recombination rate studies
  • Exciton diffusion and energy transfer studies
  • Photoluminescence studies:
    • steady-state
    • time-resolved
    • polaron-singlet and polaron-triplet quenching
    • exciton-exciton annihilation (for singlets and triplets)
    • effect of emissive dipole orientation
  • Photobleaching studies

  • Visualization of current density filaments
  • Visualization of events
    • charge and exciton movement
    • exciton generation and dissociation
    • exciton quenching
    • degradation
  • Fully interactive
    • move through your device
    • take snapshots
    • save as movie

Wondering if Bumblebee can answer your research questions? Here you can find example application notes for diverse topics.
  • Thermally Activated Delayed Fluorescence in OLEDs
  • State-of-the-art 3.5th generation OLEDs
  • Transient electroluminescence in OLEDs
  • Modeling Organic Photovoltaic devices

Request an application note

  • Kinetic Monte Carlo simulation
  • Mechanistic approach based on physical parameters
  • Highly optimized code base written in C++
    • scalable: >107 molecules is feasible and realistic
    • simulations with >104 charge carriers and excitons are possible
  • Integrated post-processing

  • Recent browser with HTML5 support