Improve the oxide/perovskite heterojunction contact for low temperature high efficiency and stable all-inorganic CsPbI2Br perovskite solar cells

Ma, Jing; Su, Jie; Lin, Zhenhua; Zhang, Long; He, Jian; Liu, Shengzhong; Chang, Jingjing; Hao, Yue

doi:10.1016/j.nanoen.2019.104241

Cited by 106 publications

(70 citation statements)

References 37 publications

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“…Among the family of all‐inorganic perovskites, the perovskite CsPbI 2 Br is a promising material which exhibits relatively exceptional device efficiency and humidity stability. Moreover, multifarious strategies have been verified to improve the performance and stability of all‐inorganic perovskite CsPbI 2 Br, such as dopants, refined grains, and interfacial modifications . In general, achieving larger open‐circuit voltage ( V oc ) and fill factor (FF) is a utility approach to obtain greater PCE of device.…”

Section: Introductionmentioning

confidence: 99%

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Zhang

Lin

et al. 2020

Solar RRL

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All‐inorganic perovskite CsPbI2Br have been regarded as a promising candidate to tackle the thermal instability issue of organic–inorganic perovskite solar cells. However, the serious interfacial charge recombination and large voltage potential loss in cells circumscribe their performance and commercialization. Herein, a facile approach is demonstrated in which the SnO2 electron transport layer is modified with short‐period deep‐ultraviolet (DUV) photoactivation process to decrease the work function and achieve better energy alignment with the conduction band of perovskites. Such modification triggers efficient charge transfer and reduces the charge recombination. Moreover, first‐principles calculation further demonstrates that DUV‐treated SnO2 can strengthen the interface interaction, reduce the interface stress caused by lattice mismatch, induce more ordered perovskite structure, enlarge transfer charge from 0.71 to 2.33 e, gain larger built‐in field (from 0.74 to 2.09 eV), lower work function, and smaller conduction band offset. Thus, all‐inorganic CsPbI2Br solar cells based on DUV‐treated SnO2 exhibit a significant enhancement in power conversion efficiency, and the champion cell achieves an elevated efficiency of 15.1% with a superior Voc of 1.22 V and better stability.

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Section: Introductionmentioning

confidence: 99%

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Zhang

Lin

et al. 2020

Solar RRL

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“…However, a number of key problems, such as the lack of resistance to water, light and heat, and many grain boundaries and defects of polycrystalline and nanocrystalline thin films, have hindered large‐scale industrial production of PSCs. PSCs with single‐crystal thin film as the light absorption layer have mainly been constructed with MAPbI 3 5, 96 and MAPbBr 3 6, 97, 98 . Although the PCE of 3D single‐crystal PSCs has increased rapidly to 21.09% in the past 23 years, it is still far lower than that of polycrystalline silicon cells 99–101 …”

Section: Methods Of 2d Perovskite Crystallizationmentioning

confidence: 99%

“…Organic‐inorganic lead halide perovskite has replaced the dye layer of dye‐sensitized solar cells to become a new light‐absorbing layer of solar cells, achieving high energy conversion efficiency (the current certified efficiency is as high as 25.2% 1 ), which stimulates promising research on the photoelectric properties of perovskite materials. Perovskite materials are not only used in perovskite solar cells (PSCs), 2–6 but also in light‐emitting diodes (LEDs), 7–11 photodetectors, 12–15 and so forth.…”

Section: Introductionmentioning

confidence: 99%

Recent progress of two‐dimensional lead halide perovskite single crystals: Crystal growth, physical properties, and device applications

Chang

Liu

2020

EcoMat

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In recent years, research on organic‐inorganic lead halide two‐dimensional (2D) perovskites has been blossoming. 2D perovskites have completely different layered structures from three‐dimensional perovskites, with interleaved organic and inorganic layers, leading to 2D perovskite materials being more stable and possessing anisotropic electrical transport. Meanwhile, 2D organic‐inorganic lead halide perovskite single crystals are receiving increasing attention because of their remarkable properties, such as long charge carrier lifetime, low defect density, and high photoluminescence quantum yield, increasing their potential for optoelectronic applications. Previously, a series of material systems based 2D perovskites single crystals has been synthesized and applied in various device applications. In this review, the preparation methods of organic‐inorganic lead halide 2D perovskite single crystals, the growth principles, their photoelectric properties and several device applications are discussed.

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“…Perovskite solar cells (PSCs) have attracted continuously increased interest owing to their unique properties and high performance [1][2][3][4][5][6][7][8][9][10]. In order to further enhance device efficiency and stability, some additional interface and compositional engineering approaches are necessary [11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Perovskite Solar Cell Performance through Surface Engineering of Metal Oxide Electron-Transporting Layer

Lü

Wang²,

Du³

et al. 2020

Coatings

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Perovskite solar cells have gained increasing interest in recent times owing to the rapidly enlarged device efficiency and tunable optoelectronic properties in various applications. In perovskite solar cells, interface engineering plays an important role in determining the final device efficiency and stability. In this study, we adopted TiCl4 treatment to reduce the surface roughness of the metal oxide layer and improve the perovskite film quality to obtain better device performance. After proper TiCl4 treatment, the efficiencies of TiCl4–TiO2- and TiCl4–ZnO-based devices were significantly enhanced up to 16.5% and 17.0%, respectively, compared with those based on pristine TiO2 and ZnO (13.2% and 10.2%, respectively).

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Improve the oxide/perovskite heterojunction contact for low temperature high efficiency and stable all-inorganic CsPbI2Br perovskite solar cells

Cited by 106 publications

References 37 publications

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Recent progress of two‐dimensional lead halide perovskite single crystals: Crystal growth, physical properties, and device applications

Enhancing Perovskite Solar Cell Performance through Surface Engineering of Metal Oxide Electron-Transporting Layer

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Improve the oxide/perovskite heterojunction contact for low temperature high efficiency and stable all-inorganic CsPbI2Br perovskite solar cells

Cited by 106 publications

References 37 publications

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI2Br Perovskite Solar Cells

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI2Br Perovskite Solar Cells

Recent progress of two‐dimensional lead halide perovskite single crystals: Crystal growth, physical properties, and device applications

Enhancing Perovskite Solar Cell Performance through Surface Engineering of Metal Oxide Electron-Transporting Layer

Contact Info

Product

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About

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells