Carrier transport layer free perovskite solar cell for enhancing the efficiency: A simulation study

Abstract The recently developed perovskite solar cell (PSC) has revolutionized photovoltaic technology due to the impressive growth in its efficiency. For the sake of enhancing the power conversion efficiency (PCE), the photo absorber-free layer is stacked in between the best suitable carrier transportation layers (CTLs). But the main challenge is that its interfaces enhance recombination, hysteresis and offer poor stability due to the decisive effect of the CTLs. To counteract such complications, a CTL-free MAPbI3 based PSC is proposed to nullify the impact under the optimization of the perovskite absorbing layer's thickness (PAL). Furthermore, the acceptor and donor doping concentration enhance the efficiency with a density of 3.25 × 1025 m−3 in the PAL. The present simulation is exhibiting a very high short circuit current density (JSC) of 17.53 mA cm−2, an open-circuit voltage (VOC) of about 0.852 Volt, a high fill factor (FF) of 82.67%, and an excellent power conversion efficiency (PCE) of 12.35%, respectively. Thus, the present simulation simultaneously unwraps a new space for the less defective PSC in the near future.