Due to limited availability and the rising price, the layer thickness reduction of solar cells is an attractive prospect. In this paper, we investigated a thin high efficiency structure of CdTe solar cells for nano-area application. The proposed structure, achieved by rotating 90◦ in the base line structure, suggests high efficiency due to high current density. The proposed structure showed acceptable efficiency which is quite noteworthy in reducing the amount of material used and associated losses. The result showed a considerable improvement over the 15% efficiency of the reference sample. Under global AM 1.5 conditions, the designed cell had a VOC of 866 mV, a JSC of 74.84 mA/cm2 , and a F F of 48.2%, corresponding to a conversion efficiency of 31.2%.