Abstract
Organic-inorganic solar cells based on n-type silicon (100) and poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) exhibit great photo-electron conversion abilities while utilizing a simple fabrication process. In organic-inorganic hybrid solar cells, the device can be described by an equivalent circuit for a duodiode model. In this model, it is found that the fluctuation of the series and shunt resistance can dramatically influence the output characteristics. In this letter, the series and shunt resistance is tuned to observe its effect on the device performance. It is found that with suitable substrate scales and physical tailoring methods, the shunt and series resistances can be adjusted to eliminate the unfavorable charge trapping phenomenon. Meanwhile, the fill factor is also enhanced notably up to 0.74, which yields a power conversion efficiency of 12.1%. These results indicate that the junction quality plays a key role in the performance of the hybrid organic-inorganic solar cell.
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