CHARGE
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 Applications
• Photovoltaic devices
• Electro-optic modulators
• Image sensors
• Semiconductor devices
• Avalanche photodiodes
Except for below applications, you can find more examples onApplication Gallery
Key Features
Finite Element IDE
- 1D/2D/3D modeling
- Import STL, GDSII, and STEP
- Parameterizable simulation objects
- Domain partitioned solids for easy property definition
- Geometry-linked sources and monitors
- Automatic mesh refinement based on geometry, materials, doping, refractive index, and optical or heat generation
Comprehensive Material Models
- Flexible visual database
- More than 500 customizable electronic and thermal properties and models for accurate simulation of complex effects
- Scriptable material properties
Charge Transport Solver
- 2D/3D finite element Poisson/drift-diffusion solver
- Steady-state, small signal AC and transient simulation
- Isothermal, non-isothermal, electro-thermal simulation
- Comprehensive semiconductor material models
- Includes electrical, optical, and thermal stimuli
- Automated finite element mesh generation based on doping, optical, and thermal profiles
Self-consistent Charge/Heat Modeling
- Self-heating effects
- High-current devices
- Requires both CHARGE and HEAT licenses
Highly integrated interoperable solvers
- Self-consistent charge and heat transport simulation
- Perform multiphysics simulations
- Photovoltaic (FDTD/DGTD, CHARGE & HEAT)
- Electro-optic (CHARGE & FDTD/DGTD/FDE)