研究目的
To investigate 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 and to propose a new definition of optimal intermediate band filling.
研究成果
The study concludes that the optimal IB filling becomes 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 mathematical model is proposed to optimize the QD-IBSC structure by finding the optimal values of the IB filling, the ratio of the absorption coefficient constants, and the position of the IB.
研究不足
The proposed definition of optimal filling is valid when the product of the absorption coefficient constants and the base width is less than or equal to one. The study assumes idealized conditions and neglects non-radiative recombinations and thermal generation.
