Hierarchical porous photoanode based on acid boric catalyzed sol for dye sensitized solar cells

Maleki, Khatereh; Abdizadeh, Hossein; Golobostanfard, Mohammad Reza; Adelfar, Razieh

doi:10.1016/j.apsusc.2016.10.048

Cited by 11 publications

(1 citation statement)

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“…A compact TiO 2 blocking layer was deposited onto the fluorine-doped tin oxide (FTO) by spin-coating a mixture of TTIP and HCl in ethanol at 2000 rpm for 60 s . A mesoporous TiO 2 layer was deposited by spin-coating a paste diluted with ethanol (ethanol/paste = 7:2 w/w) at 4000 rpm for 30 s prepared based on our previous reports. , The resultant films were dried at 120 °C for 5 min, followed by gradual annealing at 450 °C for 30 min.…”

Section: Experimental Sectionmentioning

confidence: 99%

Solvent Engineering for Controlled Crystallization and Growth of All-Inorganic Pb-Free Rudorffite Absorbers of Perovskite Solar Cells

et al. 2021

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Solution-processed Ag-Bi-I rudorffites with direct band gaps of <2 eV show promise for highly efficient and cost-effective Pb-free solar cells. However, relatively fast crystallization rates of Bi-based films and limited solubility of BiI3 in many solvents result in poor film morphologies, inhibiting their device performance. Here, we conduct a solvent-engineering method to adjust the dynamics of nucleation and growth during film formation. We fabricate Ag2BiI5, AgBiI4, and AgBi2I7 absorber layers using a mixed solvent of dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) and find that a volume percentage of 50% DMSO causes highly uniform and dense perovskite films via a BiI3-DMSO-AgI intermediate phase formation, leading to solar cells with an improved power conversion efficiency of 0.62% for the Ag2BiI5 absorber. These results provide valuable insights into the optimization of the solution processing technique to realize low-toxicity and efficient perovskite solar cells.

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Section: Experimental Sectionmentioning

confidence: 99%