The Characteristics of Perovskite Solar Cells Fabricated Using DMF and DMSO/GBL Solvents


Organic solar cells are used in low-cost solar energy applications. Recently, organo-lead halide perovskite solar cells have attracted considerable interest. Low-temperature spin-coating is the simplest method to fabricate the low-cost solar cells; however, forming a continuous perovskite film by spin coating a precursor solution of lead iodide (PbI2) and methylammonium iodide (CH3NH3I) is challenging. This work investigated the characteristics of perovskite thin film, prepared using dimethylformamide (DMF) and dimethyl sulfoxide (DMSO)/γ-butyrolactone (GBL) solvents in the direct mixing of PbI2 and CH3NH3I. Perovskite films prepared using the DMSO/GBL solvent had greater crystallinity and compactness than those using the DMF solvent. Cell performance was improved by a perovskite absorber using the DMSO/GBL solvent to a power conversion efficiency of 8.87%, an open-circuit voltage of 0.82 V, a current density of 17.13 mA/cm2, and a fill factor of 63.01%.

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Correspondence to Ming-Jer Jeng.

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Manjunatha, S.N., Chu, Y., Jeng, M. et al. The Characteristics of Perovskite Solar Cells Fabricated Using DMF and DMSO/GBL Solvents. Journal of Elec Materi (2020).

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  • Organic solar cell
  • perovskite
  • dimethylformamide
  • dimethyl sulfoxide
  • γ-butyrolactone