研究目的
Investigating the influences of the intermediate band (IB) filling, the absorption coefficient constants, and the IB position on the efficiency of a quantum dot intermediate band solar cell (QD-IBSC) considering the spatial variation of subbandgap generation rates.
研究成果
The study concludes that the optimal IB filling is a function of the magnitudes of the absorption coefficient constants and the width of the IB region when the spatial variation of the subbandgap generation rates is not negligible. A new definition of optimal filling is proposed, and a mathematical model is developed to optimize the QD-IBSC structure by finding the optimal values of IB filling, the ratio of the absorption coefficient constants, and the position of the IB.
研究不足
The study is based on idealized conditions and does not account for non-radiative recombinations and thermal generation. The spatial variation of generation rates is considered, but the model's validity is limited to cases where αij0W ≤ 1.
