Organic Photovoltaics II

Mathematical Modeling of Next Generation Organic Solar Cells

Why solar energy?

  • Fossil and nuclear fuels are costly and not environmentally friendly,
  • The sun is everywhere; Solar energy is endless comparing with traditional energy,
  • Solar cell is clean and have more choices for wearing technique.

Over the last decade, numerous efforts have been made to increase the efficiency of organic solar cells.

What we do: numerically investigate the effects of by high-k particles (size, number, orientation, etc.) in improving organic solar cell performance.

opvFig2

Fig.1. Hole current density contour, with varied size of high-k particles, in a sawtooth-structure active layer

opvFig1

Fig.2. Electron current density contours, with varied size of high-k particles, in a sawtooth-structure active layer

By solving the exitonic drift-diffusion equation, we can calculate the free charge carrier flow.


Papers:

  1.   H.K. Kodali, B. Ganapathysubramanian, “Computer Simulation of Heterogeneous Polymer Photovoltaic Devices,”  Modelling and Simulation in Materials Science and Engineering ( 2012),