Built on the finite element drift-diffusion method, CHARGE provides designers with the correct tools for comprehensive charge transport simulation in active photonic and optoelectronic semiconductor devices. CHARGE self-consistently solves the system of equations describing electrostatic potential (Poisson’s equations) and density of free carriers (drift-diffusion equations). Automatic and guided mesh refinement tools are provided to achieve accuracy while minimizing computational effort.

Key CHARGE applications include:

  • Photovoltaic devices
  • Image sensors
  • Avalanche photodiodes
  • Electro-optic modulators
  • Semiconductor devices
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