Complex optoelectronic devices, such as image sensors or both inorganic and organic LEDs are becoming smaller in size. This is in line with the overall demands of high resolution and better performance. It is important to study the optical performance of these devices in order to design and improve device performance. Due to structural and material complexity, these devices require full 3D simulations using rigorous vector-field solvers. FDTD is found to be a reliable, easy to implement simulation method for these devices.
The optical modelling of such devices requires a deep understanding of the physical principles that guide the emission and absorption behavior of such devices.
Key concepts covered include:
- Semiconductor materials and energy band diagram
- Direct and indirect bandgaps of various semiconductor materials
- Dispersive refractive indices of various semiconductor materials needed for simulations
- Electroluminescence in pn junction diodes
- Quantum yield of fluorescence and external quantum efficiency
- Optical modelling of LEDs using semianalytical methods
- Boosting emission/absorption in LEDs or solar cells using nanoparticles
- FDTD (standard and nonstandard) simulations of optoelectronic devices
- Python codes and hans-on training