Abstract
AbstractIn the present investigation, lead–free methylammonium bismuth iodide ((CH3NH3)3Bi2I9) (MAIB) perovskite cuboids has been synthesized by antisolvent assisted crystallization solution process (ASACP). The optical measurements showed a strong absorption band around 550 nm with 2.1 eV band gap. The fabricated mesoporous type device showed good performance with current density (JSC) over 1.10 mAcm−2, open circuit voltage (VOC) 0.653 V, fill factor (FF) 0.496 with 0.356 % power conversion efficiency (PCE) which is much higher than convetional processed (CP) i. e. 0.069 %. Further these devices were studied for their air and moisture stability and our device shows excellent high stability more than 60 days.
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