Chlorobenzene vapor assistant annealing method for fabricating high quality perovskite films

Li, Bairu; Jiu, Tonggang; Kuang, Chaoyang; Ma, Sushuang; Chen, Qiushan; Li, Xiaodong; Fang, Junfeng

doi:10.1016/j.orgel.2016.04.024

Cited by 39 publications

(21 citation statements)

References 41 publications

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“…Huang et al revealed a correlation between V OC and grain boundaries, and we also attribute the increasing V OC in GdF 3 –aminobutanol‐based device to the reduction of grain boundaries . Likewise, the larger grain size could efficiently reduce grain boundaries which is beneficial for the suppression of charge carrier recombination, resulting in an increase of FF and J SC …”

supporting

confidence: 54%

Suppressing Vacancy Defects and Grain Boundaries via Ostwald Ripening for High‐Performance and Stable Perovskite Solar Cells

et al. 2019

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As one kind of promising next‐generation photovoltaic devices, perovskite solar cells (PVSCs) have experienced unprecedented rapid growth in device performance over the past few years. However, the practical applications of PVSCs require much improved device long‐term stability and performance, and internal defects and external humidity sensitivity are two key limitation need to be overcome. Here, gadolinium fluoride (GdF3) is added into perovskite precursor as a redox shuttle and growth‐assist; meanwhile, aminobutanol vapor is used for Ostwald ripening in the formation of the perovskite layer. Consequently, a high‐quality perovskite film with large grain size and few grain boundaries is obtained, resulting in the reduction of trap state density and carrier recombination. As a result, a power conversion efficiency of 21.21% is achieved with superior stability and negligible hysteresis.

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supporting

confidence: 54%

Suppressing Vacancy Defects and Grain Boundaries via Ostwald Ripening for High‐Performance and Stable Perovskite Solar Cells

et al. 2019

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“…The peak position of PL spectrum increases from 768 to 773 nm when the MAI concentration increases from 10 to 40 mg/mL. The redshift might be associated with the reaction of PbI 2 and MAI [ 21 ]. As the PbI 2 film is reacted with the MAI solution and formed the MAPbI 3 perovskite film, the band gap is shifted toward 1.55 eV.…”

Section: Resultsmentioning

confidence: 99%

Effect of Different CH3NH3PbI3 Morphologies on Photovoltaic Properties of Perovskite Solar Cells

Chen

Lee

et al. 2018

Nanoscale Res Lett

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In this study, the perovskite layers were prepared by two-step wet process with different CH3NH3I (MAI) concentrations. The cell structure was glass/FTO/TiO2-mesoporous/CH3NH3PbI3 (MAPbI3)/spiro-OMeTAD/Ag. The MAPbI3 perovskite films were prepared using high and low MAI concentrations in a two-step process. The perovskite films were optimized at different spin coating speed and different annealing temperatures to enhance the power conversion efficiency (PCE) of perovskite solar cells. The PCE of the resulting device based on the different perovskite morphologies was discussed. The PCE of the best cell was up to 17.42%, open circuit voltage of 0.97 V, short current density of 24.06 mA/cm2, and fill factor of 0.747.

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“… 32 Fang et al reported high quality CH 3 NH 3 PbI 3− x Cl x perovskite films using chlorobenzene (CB) vapor post-annealing. 36 They found that this method had a positive effect on the interfacial contact between the perovskite film and the upper PCBM film. Hybrid PSCs with planar heterojunctions fabricated by this method demonstrated a reproducible optimal PCE of 14.79% and an average PCE of 13.40%, which were better than those when thermally annealed.…”

Section: Introductionmentioning

confidence: 99%

Mechanism and effect of γ-butyrolactone solvent vapor post-annealing on the performance of a mesoporous perovskite solar cell

et al. 2018

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Chlorobenzene vapor assistant annealing method for fabricating high quality perovskite films

Cited by 39 publications

References 41 publications

Suppressing Vacancy Defects and Grain Boundaries via Ostwald Ripening for High‐Performance and Stable Perovskite Solar Cells

Suppressing Vacancy Defects and Grain Boundaries via Ostwald Ripening for High‐Performance and Stable Perovskite Solar Cells

Effect of Different CH3NH3PbI3 Morphologies on Photovoltaic Properties of Perovskite Solar Cells

Mechanism and effect of γ-butyrolactone solvent vapor post-annealing on the performance of a mesoporous perovskite solar cell

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