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I. Efficiency Strategies


The power conversion efficiency (PCE) of organic photovoltaic cells is currently only up to about 6.1% and this is not enough to meet realistic needs. The biggest challenge to increasing the PCE is the large band gap of most organic material.

Possible Ways to Improve Efficiency

  • Lower the band gap - use different polymers?
  • Reduce the LUMO offset
  • Increase the internal quantum efficiency (IQE) to above 80%