Reduced surface defects of organometallic perovskite by thermal annealing for highly efficient perovskite solar cells

Cui, Peng; Fu, Pengfei; Wei, Dong; Li, Meicheng; Song, Dandan; Yue, Xiaopeng; Li, Yaoyao; Zhang, Zhirong; Li, Yingfeng; Mbengue, Joseph Michel

doi:10.1039/c5ra16669a

Cited by 67 publications

(53 citation statements)

References 25 publications

(43 reference statements)

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“…[56][57][58] Considering the variation of the instrument parameters between different labs,the optimizations of the spin-coating conditions were performed individually. [59][60][61] In the solution-processed methods,the solvents used to dissolve the precursor materials affect the morphology and crystalline properties during the formation of perovskites. [62][63][64][65] Them ost commonly used solvents are N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), methyl-2-pyrrolidinone (NMP), r-butyrolactone (GBL), toluene,oramixture of them.…”

Section: One-step Depositionmentioning

confidence: 99%

Recent Advances in Flexible Perovskite Solar Cells: Fabrication and Applications

et al. 2019

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Flexible perovskite solar cells have attracted widespread research effort because of their potential in portable electronics. The efficiency has exceeded 18 % owing to the high‐quality perovskite film achieved by various low‐temperature fabrication methods and matching of the interface and electrode materials. This Review focuses on recent progress in flexible perovskite solar cells concerning low‐temperature fabrication methods to improve the properties of perovskite films, such as full coverage, uniform morphology, and good crystallinity; demonstrated interface layers used in flexible perovskite solar cells, considering key figures‐of‐merit such as high transmittance, high carrier mobility, suitable band gap, and easy fabrication via low‐temperature methods; flexible transparent electrode materials developed to enhance the mechanical stability of the devices; mechanical and long‐term environmental stability; an outlook of flexible perovskite solar cells in portable electronic devices; and perspectives of commercialization for flexible perovskite solar cells based on cost.

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Section: One-step Depositionmentioning

confidence: 99%

Recent Advances in Flexible Perovskite Solar Cells: Fabrication and Applications

et al. 2019

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“…For photodiodes without any charge carrier trapping or recombination, the ideality factor is expected to be unity. However, because charge carriers are trapped and recombined, most perovskite photodiodes have an ideality factor approximating 2.0 or more . Rearranging Equation enables us to fit the experimental data of the

d V d J_{d}^{- 1}

versus

J_{d}^{- 1}

relation to obtain the ideality factor as fully described in Figure b.…”

mentioning

confidence: 99%

Phase Stabilized α‐CsPbI₃ Perovskite Nanocrystals for Photodiode Applications

Sim

Swarnkar

Nag

et al. 2017

Laser & Photonics Reviews

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High‐performance and high‐reliability photodiodes are demonstrated by using α‐CsPbI3 perovskite nanocrystals (NCs) phase‐stabilized with a low‐temperature solution‐treated active layer. In addition to the high charge mobility, the high absorption coefficient, and IR‐blind characteristics of the perovskite material, the defect‐tolerant nature of α‐CsPbI3 perovskite NCs are combined to realize hysteresis‐free and high detectivity photodiodes. To further minimize interface defects originating from multi‐layer photodiode construction, a poly(3‐hexylthiophene) layer is strategically introduced as a passivation and electron blocking layer, resulting in a low diode ideality factor of 1.5 and a noise equivalent power of 1.6 × 10−13 W Hz−0.5. As a result, high detectivity of 1.8 × 1012 Jones is demonstrated with near‐zero hysteresis. Furthermore, the optimized photodiode exhibits excellent stability under high humidity conditions owing to the intrinsic nature of the defect‐tolerant α‐CsPbI3 perovskite NCs.

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“…Organic solar cells (OSCs) are the potentially novel photovoltaic technologies that pose potential advantages, such as low‐cost production, light weight, mechanical flexibility, solution processability, and scalable low‐temperature fabrication . Accordingly, tandem OSCs have been introduced as an effective method to improve the power conversion efficiency (PCE) of OSCs by stacking two or more sub‐cells with a complementary absorption range .…”

Section: Comparison Of Prediction and Measurement Results Of Tandem Oscsmentioning

confidence: 99%

Performance and Matching Band Structure Analysis of Tandem Organic Solar Cells Using Machine Learning Approaches

Lee

2019

Energy Tech

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Organic solar cells (OSCs) based on tandem configuration have been drastically studied for boosting power conversion efficiency (PCE) in the the past decade and are a potential improvement to current commercial photovoltaic solar cell technology. Although a series of promising efficiency achievements on tandem OSCs have been reported, the crucial issue is how to estimate tandem OSCs performance based on known physical properties of different photoactive materials. Herein, a set of electronic features of photovoltaic materials is trained using machine‐learning algorithms for accurate efficiency predictions of tandem OSCs. The well‐trained machine‐learning model presented herein aims at 1) designing the matching band structures of active blends in each sub‐cell and 2) identifying the characteristics of the materials to be used to achieve high PCE values. The machine‐learning approach provides an effective strategy for suggesting the ideal properties of photovoltaic materials in terms of highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO), and bandgap, which is useful for the rational design of high‐efficiency tandem OSCs.

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Reduced surface defects of organometallic perovskite by thermal annealing for highly efficient perovskite solar cells

Abstract: The surface defects of the organometallic perovskite play an important role in the photovoltaic performance of solar cells, which depress the conversion efficiency and cause photocurrent hysteresis.

Cited by 67 publications

References 25 publications

Recent Advances in Flexible Perovskite Solar Cells: Fabrication and Applications

Recent Advances in Flexible Perovskite Solar Cells: Fabrication and Applications

Phase Stabilized α‐CsPbI₃ Perovskite Nanocrystals for Photodiode Applications

Performance and Matching Band Structure Analysis of Tandem Organic Solar Cells Using Machine Learning Approaches

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Reduced surface defects of organometallic perovskite by thermal annealing for highly efficient perovskite solar cells

Abstract: The surface defects of the organometallic perovskite play an important role in the photovoltaic performance of solar cells, which depress the conversion efficiency and cause photocurrent hysteresis.

Cited by 67 publications

References 25 publications

Recent Advances in Flexible Perovskite Solar Cells: Fabrication and Applications

Recent Advances in Flexible Perovskite Solar Cells: Fabrication and Applications

Phase Stabilized α‐CsPbI3 Perovskite Nanocrystals for Photodiode Applications

Performance and Matching Band Structure Analysis of Tandem Organic Solar Cells Using Machine Learning Approaches

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Phase Stabilized α‐CsPbI₃ Perovskite Nanocrystals for Photodiode Applications