A simple synthesis of an ionic liquid is carried out using a trialkylphosphine and an alkyl halide. The results showed that the quality of perovskite crystals is enhanced by the incorporation of BPI, when the percentage is 1.5% the PCE of champion PSCs MA(BPI)PbI increases significantly from 15.5%, with a of 0.957 mV, of 23.6 mA cm, and an FF of 68.4%. Stability tests show that excess BPI by 20% has a protective effect against humidity, MA(BPI)PbI was more stable towards humidity, losing only 20% efficiency for 200 h.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9056379 | PMC |
| http://dx.doi.org/10.1039/d0ra04630b | DOI Listing |
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