Favorable grain growth of thermally stable formamidinium-methylammonium perovskite solar cells by hydrazine chloride

Wang, Luyao; Wang, Xin; Zhu, Lei; Leng, Shibing; Liang, Jianghu; Zheng, Yiting; Zhang, Zhanfei; Zhang, Zhiang; Liu, Xiao; Liu, Feng; Chen, Chun‐Chao

doi:10.1016/j.cej.2021.132730

Cited by 25 publications

(23 citation statements)

References 65 publications

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“…2a, PL peaks at 760 nm ascribed to bulk perovskites for 2D/3D films is significantly higher than that of the control film, indicating effectively reduced surface defects. 45 In particular, the strongest PL intensity for the perovskite/R-α-BrMBA film demonstrates the optimal passivation effect of the Br-2D perovskite. Besides, the PL peaks at 495 nm for the modified films illustrate the formation of 2D perovskites ( n = 1).…”

Section: Resultsmentioning

confidence: 96%

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Jiang,

Tian,

Zhang

et al. 2022

Mater. Adv.

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Section: Resultsmentioning

confidence: 96%

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Jiang,

Tian,

Zhang

et al. 2022

Mater. Adv.

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“…We selected five types of high-performance PSCs with similar device architectures, namely, MAPbI 3 , FAMA, FAMACs, CsPbI 3 , and CsPbI 2 Br, which are representatives of state-the-art organic-inorganic hybrid and inorganic PSCs. [44][45][46][47][48] These benchmark high-performance PSCs were fabricated following recipes reported in the literatures, [44][45][46][47][48] with their device parameters summarized in Table 1. J-V characteristics of the five types of PSCs under AM 1.5G (100 mW cm À2 ) are shown in Figure S1, Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

Lead Leaching of Perovskite Solar Cells in Aqueous Environments: A Quantitative Investigation

Yan

Zhao

et al. 2022

Solar RRL

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Lead halide perovskite solar cells (PSCs) have emerged as a highly promising next‐generation photovoltaic (PV) technology that combines high device performance with ease of processing and low cost. However, the potential leaching of lead is recognized as a major environmental concern for their large‐scale commercialization, especially for application areas with significant overlap with human life. Herein, a quantitative kinetic analysis of the Pb leaching behavior of five types of benchmark PSCs, namely, MAPbI3, FA0.95MA0.05Pb(I0.95Br0.05)3, Cs0.05(FA0.85MA0.15)0.95Pb(I0.85Br0.15)3, CsPbI3, and CsPbI2Br, under laboratory rainfall conditions is reported. Strikingly, over 60% of the Pb contained in the unencapsulated perovskite devices is leached within the first 120 s under rainfall exposure, suggesting that very rapid leaching of Pb can occur when indoor and outdoor PV devices are subject to physical damage or failed encapsulation. The initial Pb leaching rate is found to be strongly dependent on the types of PSCs, pointing to a potential route toward Pb leaching reduction through further optimization of their materials design. The findings offer kinetic insights into the Pb leaching behavior of PSCs upon aqueous exposure, highlighting the urgency to develop robust mitigation methods to avoid a potentially catastrophic impact on the environment for their large‐scale deployment.

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“…Figure b and Figure S18 show the Mott–Schottky plots, which can obtain the built-in potential ( V bi ) according to the Mott–Schottky formula: 1 C 2 = 2 ( V bi − V ) A 2 e ε 0 ε normalr N normalA where A is the device area and N A is the carrier concentration. Moreover, the width of the depletion layer ( W p ) can be calculated by the formula of W p = (2ε 0 ε r V bi / eN ) 1/2 , where N is the trap density . The built-in potential of the device is increased from 0.82 V (control) to 0.94 V (PCBM/PVK), 0.92 V (PVK/2FPPD), and 0.99 V (PCBM/PVK/2FPPD).…”

Section: Results and Discussionmentioning

confidence: 99%

“…Meanwhile, the full width at half-maximum (FWHM) of the diffraction peak corresponding to the (110) crystal plane is reduced (Table S2), from 0.140 (control) to 0.121 (PCBM/PVK), 0.118 (PVK/2FPPD), and 0.112 (PCBM/PVK/2FPPD), indicating that the crystal orientation toward the (110) crystal plane increases the PVK crystallinity. 32,51 Particularly, the increase of diffraction peak intensity is observed with insertion of the 2FPPD thin layer. The 2FPPD promotes crystal secondary growth leading to improvement in the crystallinity of PVK.…”

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confidence: 90%

An Interface Co-modification Strategy for Improving the Efficiency and Stability of CsPbI₃ Perovskite Solar Cells

Guan

Lei

et al. 2022

ACS Appl. Energy Mater.

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Interface engineering is a simple and effective strategy for improving the photovoltaic performance and stability of perovskite solar cells (PSCs). Herein, an interface co-modification strategy is proposed, using [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and 2-fluoro-1,4-phenylenediammonium iodide (2FPPD) to modify the electron transport layer (ETL)/perovskite (PVK) and the PVK/hole transport layer (HTL) interfaces, respectively. A series of characterizations demonstrate that the PCBM&2FPPD interface co-modification strategy effectively enhances the extraction and transport efficiency of carriers at the interface, passivates surface defects, inhibits the nonradiative recombination of carriers, and simultaneously inhibits ion migration. Moreover, this strategy improves the crystallinity and surface hydrophobicity of PVK and optimizes the energy level alignment of PSCs. As a result, all photovoltaic parameters are improved after optimization, where the power conversion efficiency (PCE) of PSCs has increased from 17.01% to 18.36%. Meanwhile, the optimized PSCs show excellent environmental stability, which can be stably stored in air (RH = 10−20%) for about 800 h.

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Favorable grain growth of thermally stable formamidinium-methylammonium perovskite solar cells by hydrazine chloride

Cited by 25 publications

References 65 publications

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Lead Leaching of Perovskite Solar Cells in Aqueous Environments: A Quantitative Investigation

An Interface Co-modification Strategy for Improving the Efficiency and Stability of CsPbI₃ Perovskite Solar Cells

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Favorable grain growth of thermally stable formamidinium-methylammonium perovskite solar cells by hydrazine chloride

Cited by 25 publications

References 65 publications

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Mixed dimensionality of 2D/3D heterojunctions for improving charge transport and long-term stability in high-efficiency 1.63 eV bandgap perovskite solar cells

Lead Leaching of Perovskite Solar Cells in Aqueous Environments: A Quantitative Investigation

An Interface Co-modification Strategy for Improving the Efficiency and Stability of CsPbI3 Perovskite Solar Cells

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An Interface Co-modification Strategy for Improving the Efficiency and Stability of CsPbI₃ Perovskite Solar Cells