Journal
JOURNAL OF ELECTRONIC MATERIALS
Volume 49, Issue 11, Pages 6823-6828Publisher
SPRINGER
DOI: 10.1007/s11664-020-08283-8
Keywords
Organic solar cell; perovskite; dimethylformamide; dimethyl sulfoxide; gamma-butyrolactone
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Funding
- Chang Gung University [NERPD2J0131, BMRPA52, MOST 108-2221-E-182-019]
- Chang Gung Memorial Hospital [NERPD2J0131, BMRPA52, MOST 108-2221-E-182-019]
- Ministry of Science and Technology, Republic of China [NERPD2J0131, BMRPA52, MOST 108-2221-E-182-019]
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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)/gamma-butyrolactone (GBL) solvents in the direct mixing of PbI(2)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/cm(2), and a fill factor of 63.01%.
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