Fast-growing procedure for perovskite films in planar heterojunction perovskite solar cells

Liu, Tanghao; Chen, Ke; Hu, Qin; Wu, Jiang; Luo, Deying; Jia, Shuang; Zhu, Rui; Gong, Qihuang

doi:10.1016/j.cclet.2015.09.022

Cited by 18 publications

(12 citation statements)

References 26 publications

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“…A complex immediate phase, MAI -PbI 2 -DMSO, could form a compact and uniform fi lm, which was the key point of this method. [ 111 ] Perovskite fi lm with large domain sizes could be formed with 3 seconds (Figure 4 c). [ 104,105 ] Apart from forming intermediate species with additives, the perovskite crystal growth in "one-step" method can also be retarded by reducing the evaporating rate of the host solvent.…”

Section: One-step Solution Methodsmentioning

confidence: 99%

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Inverted Perovskite Solar Cells: Progresses and Perspectives

Liu

Chen

et al. 2016

Advanced Energy Materials

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427

377

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During the past 6 years, perovskite solar cells have experienced a rapid development and shown great potential as the next‐generation photovoltaics. For the perovskite solar cells with regular structure (n‐i‐p structure), device efficiency has reached over 20% after the intense efforts of researchers from all over the world. Recently, perovskite solar cells with the inverted structure (p‐i‐n structure) have been becoming more and more attractive, owing to their easy‐fabrication, cost‐effectiveness, and suppressed hysteresis characteristics. Some recent progress in their device performance and stability has indicated their promising future. Here, recent developments and future perspectives about inverted perovskite solar cells are reviewed. Interface engineering, film morphology control, device stability, hysteresis phenomena and other research hotspots are discussed to present the roadmap for the development of inverted perovskite solar cells.

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Section: One-step Solution Methodsmentioning

confidence: 99%

Section: Post Annealing Processesmentioning

confidence: 99%

Inverted Perovskite Solar Cells: Progresses and Perspectives

Liu

Chen

et al. 2016

Advanced Energy Materials

Self Cite

427

377

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“…Regular Structure Perovskite Solar Cells : The TiO x nanoparticle precursor solution was prepared based on our reported literature . Then the solution was spin‐coated on pre‐cleaned and patterned glass/FTO substrates at 3000 rpm for 60 s, then thermally annealed at 500 °C for 30 min in the air to build a TiO x layer.…”

Section: Methodsmentioning

confidence: 99%

High‐Performance Inverted Planar Heterojunction Perovskite Solar Cells Based on Lead Acetate Precursor with Efficiency Exceeding 18%

Zhao

Luo

et al. 2016

Adv Funct Materials

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178

116

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Organic-inorganic lead halide perovskites are emerging materials for the nextgeneration photovoltaics. Lead halides are the most commonly used lead precursors for perovskite active layers. Recently, lead acetate (Pb(Ac)2) has shown its superiority as the potential replacement for traditional lead halides. Here, we demonstrate a strategy to improve the efficiency for the perovskite solar cell based on lead acetate precursor. We utilized methylammonium bromide as an additive in the Pb(Ac)2 and methylammonium iodide precursor solution, resulting in uniform, compact and pinhole-free perovskite films. We 2 observed enhanced charge carrier extraction between the perovskite layer and charge collection layers and delivered a champion power conversion efficiency of 18.3% with a stabilized output efficiency of 17.6% at the maximum power point. The optimized devices also exhibited negligible current density-voltage (J-V) hysteresis under the scanning conditions.

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“…In contrast to other conventional solution methods, the utilization of precursor materials in this process is ultrahigh. Almost all the Pb in the deposited precursor solution presents in the final perovskite film in the FGP, reducing the cost and potential Pb pollution in the PSC fabrication [27]. However, we found that, using the conventional stoichiometric PbI2·CH3NH3I (MAI) precursor solution (in dimethylformamide (DMF)), the FGP-processed PSCs showed poor current density (J)-voltage (V) performance, severe hysteresis and limited reproducibility.…”

Section: Introductionmentioning

confidence: 75%

“…However, the Pb release during the fabrication of PSCs is rarely addressed. While numerous HOIP thin-film deposition techniques have been developed for fabricating high-PCE PSCs [2,3,9,[21][22][23][24][25][26][27], the environmental impact of these techniques has not been evaluated. In particular, in the most commonly-used spin-coating based solution methods, only a very small portion of the Pb-containing precursor materials are deposited into the final HOIP thin films, while the remainder is spun off [3,7,8,21,22].…”

Section: Introductionmentioning

confidence: 99%