Affiliation:
1. Faculty of Science and Technology Charles Darwin University Darwin 0909 NT Australia
2. Energy and Resources Institute Charles Darwin University Darwin 0909 NT Australia
3. Institute for Materials Discovery University College London Malet Place London WC1E 7JE UK
Abstract
This article presents a new mathematical model for simulating the power conversion efficiency (PCE) of organic solar cells (OSCs) and perovskite solar cells (PSCs). This model incorporates all power losses that can occur before the charge carriers are collected by their respective electrodes. This includes power loss due to thermalization of the charge carriers above the bandgap (), charge carrier recombination (, dissociation of excitons (, and the transport of free charge carriers to their respective electrodes through the energy off‐sets (. By quantifying each power loss, the model can simulate the net electrical power generated by a solar cell and estimate its PCE. The validity of the mathematical model is tested by comparing the calculated PCE of an OSC and a PSC with their experimental results and the results obtained from the conventional simulation, which are found to be in good agreement. It is found that the highest power loss occurs due to in both OSC and PSC. Compared to conventional models, this model establishes a direct relationship between PCE and individual power losses that may occur in both OSCs and PSCs.