Journal
CHEMISTRYSELECT
Volume 2, Issue 4, Pages 1578-1585Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201700025
Keywords
air-stability; lead-free perovskites; MA3Bi2I9; > 0.356% PCE
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Funding
- Basics Science Research Program through the National Foundation of Korea (NRF) - Ministry of Education [NRF-2014R1 A2054051]
- Korea Research Fellowship Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2016H1D3 A1909289]
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In 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 550nm with 2.1eV band gap. The fabricated mesoporous type device showed good performance with current density (JSC) over 1.10mAcm-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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