Performance Analysis of Impurity Photovoltaic Effect in Solar Cells

An investigation has been performed to study theImpurity Photovoltaic (IPV) effect in a double junction solarcell. Impurity has been introduced separately andsimultaneously in the two sub-cells which have been found toincrease the cell performance. Moreover, it is obtained thatimpurity incorporated in the sub-cell with the lower current hasthe dominant effect on improvement. Improvement in shortcircuit current, fill-factor and efficiency of the double junctioncell have also been quantified to demonstrate the enhancementcompared to the case of single junction cell. Thus, this studypredicts an efficient approach of improving performance ofmultijunction cells