Printable CsPbI<sub>3</sub> Perovskite Solar Cells with PCE of 19% via an Additive Strategy

Chang, Xiaoming; Fang, Junfei; Fan, Yuanyuan; Luo, Tao; Su, Hang; Zhang, Yalan; Lu, Jing; Tsetseris, Leonidas; Anthopoulos, Thomas D.; Liu, Shengzhong; Zhao, Kui

doi:10.1002/adma.202001243

Cited by 167 publications

(139 citation statements)

References 30 publications

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“…In addition, we should emphasize that the additive strategy and surface modification mentioned above can also be applied to other coating methods, such as, spin-coating, spray-coating, and roll-to-roll process. [112][113][114][115] We summarized the key points for blade-coating method used in OSCs and PSCs (Figure 15). The difficulty for blade-coating lies in the control of solution flow, which is important for making highquality films and saving time.…”

Section: Conclusion and Outlooksmentioning

confidence: 99%

Large‐Area Blade‐Coated Solar Cells: Advances and Perspectives

Xiao

Zuo

Zhong

et al. 2021

Advanced Energy Materials

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the representative of the third-generation photovoltaics, have attracted great attention owing to unique properties such as light weight, flexibility, low cost, and low-temperature solution process. PCE of OSCs has been greatly improved via continuous development of novel semiconducting materials and performance optimization in the past two decades. [3][4][5] Lead halide perovskites, as star semiconducting materials, have obtained enormous attention in optoelectronic fields due to their outstanding properties, such as, tunable band gaps, high absorption coefficient, high charge carrier mobility, and long carrier diffusion lengths. [6][7][8][9][10][11] Until 2021, PCEs of perovskite/silicon tandem cells and OSCs have exceeded 29% and 18%, respectively. [12][13][14] However, the high-efficiency cells are usually prepared by spin-coating, with an active area of less than 0.1 cm 2 . There is no doubt that the development of OSCs and PSCs will go to large-scale industrial production, thus the challenge is achieving large-area uniform active layers. However, due to the uneven centrifugal force in the traditional spin-coating process, the thicknesses at the center and the edge of the substrate is different, especially for large-area films. The thick area shows increased nonradiative recombination loss. The thin area shows reduced lightharvesting ability and increased pinholes, leading to reduced efficiency. To address these issues, developing large-area coating methods is an effective way. [15] So far, various methods have been applied to large-area film fabrication, including spray coating, [16][17][18][19] dip coating, [20,21] slot-die coating, [22,23] and bladecoating. Among these techniques, blade-coating has achieved the greatest success, with the best PCE of ≈22%.In this review, we summarize the recent advances of bladecoating techniques for fabricating large-area PSCs and OSCs, and analyze the issues that need to be solved in blade-coating technology. We hope it can provide new strategies for the commercialization of the third-generation solar cells. Blade-Coating TechnologyBlade-coating is a widely recognized method for the preparation of large-area films. Blade-coating method, with the merits of efficient material utilization, in situ crystallization and adjustable parameters, has been investigated in depth for the preparation of various thin films. [15] Figure 1 demonstrates the High-efficiency perovskite solar cells (PSCs) and organic solar cells (OSCs) are promising alternatives for silicon-based solar cells. At present, the key point for commercialization of PSCs and OSCs is realizing large-scale production while maintaining the same high efficiency as small-area ones. In this review, the blade-coating method for preparing large-area films is introduced first and the recent advances of blade-coated OSCs and PSCs are summarized. Then, the effects of blading parameters on the crystal growth and film formation of the light-harvesting materials are discussed. Moreover, the limitations and advantages of making h...

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Section: Conclusion and Outlooksmentioning

confidence: 99%

Large‐Area Blade‐Coated Solar Cells: Advances and Perspectives

Xiao

Zuo

Zhong

et al. 2021

Advanced Energy Materials

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“…demonstrated printable all organic PSCs with an efficiency of over 19% by introducing molecular additive Zn(C 6 F 5 ) 2 to slow the crystallization speed, thus decreasing the defects traps density. [ 36 ]…”

Section: Passivation By Additive Strategy Among the Bulk Perovskite Filmsmentioning

confidence: 99%

Bulk Passivation and Interfacial Passivation for Perovskite Solar Cells: Which One is More Effective?

Wang

Jin

Zhen

et al. 2021

Adv Materials Inter

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Perovskite solar cells (PSCs) have emerged as promising candidates for photovoltaic applications because of their superior optoelectronic properties. The power conversion efficiency of 25.5% has been achieved at an astonishing speed from the debut of 3.8%. However, the notoriously poor stability stemming from the solution fabrication process and uncontrollable rapid crystallization limits the commercialization of PSCs. Thus defects are inevitable among the bulk films and interfaces. Herein, recent progress about defects passivation by additive strategy among the bulk film, are discussed. More importantly, the defects passivation strategy for perovskite/electron transport layer and perovskite/hole transport layer interfaces are summarized. Furthermore, how defects passivation and ion migration would affect the stability performance of the perovskite devices are elaborated. Finally, the current challenges for commercialization prospects of perovskite photovoltaic applications are discussed.

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“…They utilized multifunctional molecular additive, i.e., Zn(C 6 F 5 ) 2 , to bridge SnO 2 and perovskite, which not only improved the perovskite crystallinity but also allowed a favorable energy level alignment (Figure 6h‐j). [74] As a result, a PCE of about 19% was obtained with increased open‐circuit voltage.…”

Section: Recent Advances In Perovskite Deposition Approachesmentioning

confidence: 99%

Engineering inorganic lead halide perovskite deposition toward solar cells with efficiency approaching 20%

Qiu

et al. 2021

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Inorganic perovskite materials have gained tremendous attention due to their superior chemical and thermal stability than organic‐inorganic hybrid perovskites. In the past years, substantial research efforts have been devoted to developing uniform and pin‐hole free inorganic perovskite films with high electronic quality. As a result, power conversion efficiency of inorganic perovskite solar cells (PSCs) has boosted to over 19%, which presents a promising potential for technology commercialization. Herein, we give a comprehensive review of the recent progress on state‐of‐the‐art inorganic cesium lead halide based PSCs, particularly on the perovskite deposition approaches. We show a clear roadmap to fabricate high electronic quality inorganic perovskite films by tuning the precursor crystallization kinetics, performing post‐deposition treatments, and passivating surface/interface defects. Inorganic perovskite films prepared by these approaches exhibit not only high crystallinity, favorable morphology, and low trap densities but also improved phase stability. The advanced deposition approaches lay the foundation for further improving the performance and long‐term operational stability of inorganic perovskite photovoltaics.

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Printable CsPbI₃ Perovskite Solar Cells with PCE of 19% via an Additive Strategy

Cited by 167 publications

References 30 publications

Large‐Area Blade‐Coated Solar Cells: Advances and Perspectives

Large‐Area Blade‐Coated Solar Cells: Advances and Perspectives

Bulk Passivation and Interfacial Passivation for Perovskite Solar Cells: Which One is More Effective?

Engineering inorganic lead halide perovskite deposition toward solar cells with efficiency approaching 20%

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Printable CsPbI3 Perovskite Solar Cells with PCE of 19% via an Additive Strategy

Cited by 167 publications

References 30 publications

Large‐Area Blade‐Coated Solar Cells: Advances and Perspectives

Large‐Area Blade‐Coated Solar Cells: Advances and Perspectives

Bulk Passivation and Interfacial Passivation for Perovskite Solar Cells: Which One is More Effective?

Engineering inorganic lead halide perovskite deposition toward solar cells with efficiency approaching 20%

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Product

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Printable CsPbI₃ Perovskite Solar Cells with PCE of 19% via an Additive Strategy