Conductance is responsible for the power conversion efficiency of solar cell

Many attempts were made in solar energy to find advanced solar energy technology for solar cell which is with high power conversion efficiency; calculation output current by output voltage using a model of solar cells is very useful for this major aim. Although there are many models can be used to estimate current via voltage from solar cells, no one parameter in the models is a correlation to power conversion efficiency. One simplification of single diode model is proposed in this paper. Not only this model is in form of explicit function, but also one parameter as parallel conductance is correlation to power conversion efficiency. The accuracy of the proposed model is evaluated using thirty experimental data. It was found that in all experimental cases, very good match between measured and calculated is reached. The first important result indicates that power conversion efficiency independent on solar cell connection in series due to parallel conductance independent on solar cell connection in series. The major contribution is that the mathematical relationship between power conversion efficiency and parallel conductance is found in this paper. It is envisaged that the proposed methodology can be a very good route for researchers to discover advanced solar cell.

Automated summary

This paper proposes a simplified single diode model that can effectively calculate the relationship between current and voltage in solar cells, and represents the correlation with power conversion efficiency through one parameter. The proposed model is found to have a very good match with experimental results through evaluation of 30 sets of experimental data. The first important research finding indicates that power conversion efficiency is independent of the solar cell connection in series, due to the parallel conductance being independent of the solar cell connection in series. The major contribution of this paper is the discovery of the mathematical relationship between power conversion efficiency and parallel conductance, which provides a promising direction for researchers to discover advanced solar cells.