Mxene regulates the stress of perovskite and improves interface contact for high-efficiency carbon-based all-inorganic solar cells

Xu, Yongzhao; Liu, Fengli; Li, Ruoshui; Jing, Yu; Chen, Qi; Chen, Xia; Deng, Chunyan; Du, Zhenbo; Sun, Weihai; Wu, Jihuai; Lan, Zhang

doi:10.1016/j.cej.2023.141895

Cited by 28 publications

(13 citation statements)

References 44 publications

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“…This indicates a reduction in lattice distortion along the longitudinal distribution of the perovskite film. 33,34 To measure the specific residual stress, we carried out GIXRD using a predetermined grazing angle of incidence. The calculation of residual stress was done using the 2 θ − sin 2 φ method, where 2 θ is the diffraction angle and φ is the tilt angle.…”

Section: Resultsmentioning

confidence: 99%

A stress relaxation strategy for preparing high-quality organic–inorganic perovskite thin films via a vapor–solid reaction

Hu,

Duan,

et al. 2023

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

A stress relaxation strategy for preparing high-quality organic–inorganic perovskite thin films via a vapor–solid reaction

Hu,

Duan,

et al. 2023

J. Mater. Chem. A

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“…In recent years, metal halide perovskite materials have been growing by leaps and bounds in the field of optoelectronic devices by virtue of tunable band gap, large absorption coefficient, and low defect density. − So far, the highest perovskite photovoltaic conversion efficiency (PCE) has exceed 26.1%, which has surpassed commercial silicon solar cells. However, perovskite solar cells (PSC) still face many problems before they can be commercialized.…”

Section: Introductionmentioning

confidence: 99%

Novel Strategy for High Efficient and Stable Perovskite Solar Cells through Atomic Layer Deposition

Jia,

Jiang,

et al. 2024

ACS Appl. Mater. Interfaces

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The perovskite material has demonstrated conceivable potential as an absorbing material of solar cells. Although the power conversion efficiency of the device based on perovskite has rapidly come to 26%, there are still many factors that affect the further improvement of the photoelectric conversion efficiency. Interface defects are the dominating concern that influence carrier transportation and stability. Here, we report a novel strategy where B 2 O 3 is deposited on the fresh perovskite film by atomic layer deposition technology. The organic atmosphere during atomic layer deposition can effectively regulate the crystallization kinetics of perovskites and promote crystal growth. The B 2 O 3 adsorbed on the perovskite light-absorption layer can effectively reduce the electropositive defects on the surface of the perovskite, such as uncoordinated Pb 2+ and I vacancies due to the electron-donating properties of the side O atoms in B 2 O 3 . Consequently, the power conversion efficiency of the perovskite solar cell after B 2 O 3 treatment increases to 21.78% from 18.89%. Simultaneously, B 2 O 3 can improve the stability of devices.

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“…[9][10][11][12] Despite the PCE enhancement of CsPbI 3 from 3% to more than 21%, there still remain challenges for commercialization, the most serious of which is the phase change of α-CsPbI 3 . [13,14] Such phase transition originated from the small size of Cs ions, which cannot support the cubic structure of the perovskite, leading to the structural collapse. [15,16] Currently, there are four structures of CsPbI 3 reported, including cubic structure (α), tetragonal structure (β), and two kinds of orthorhombic structures (γ and δ).…”

Section: Introductionmentioning

confidence: 99%

“…[15,16] Currently, there are four structures of CsPbI 3 reported, including cubic structure (α), tetragonal structure (β), and two kinds of orthorhombic structures (γ and δ). [13,17] Studies have shown that α-CsPbI 3 could only remain stable at temperatures above 330 °C, which transforms into β-CsPbI 3 at around 200 °C, and δ-CsPbI 3 at room temperature. [18] However, δ-CsPbI 3 has a bandgap of 2.8 eV, which is not suitable for photovoltaic devices, limiting the lifespan of iPSC devices.…”

Section: Introductionmentioning

confidence: 99%

Hindered Phase Transition Kinetics of α‐CsPbI₃ by External Tension

et al. 2023

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Recently, the all‐inorganic perovskite solar cells have attracted large amount of attention, due to the much better water resistance compared to the organic counterparts. Unfortunately, the undesired phase transition remained a significant challenge, despite the many attempts. An important step forward has been made here by numerical simulation, which discovered the significance of external strain to the stability of desired α‐CsPbI3, whose lifetime can be extended up to 3 times by non‐hydrostatic tension, as has been verified by both modelling and experimental results. In addition, such lifetime could be even enhanced further by hydrostatic tension, as indicated by the simulation. The unexpected observation provided not only an effective method to extend the lifetime of the perovskite devices, but also opened an unexpected path for the wide research community to utilise the straining engineering method that has been extensively investigated in the perovskite research.This article is protected by copyright. All rights reserved.

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Mxene regulates the stress of perovskite and improves interface contact for high-efficiency carbon-based all-inorganic solar cells

Cited by 28 publications

References 44 publications

A stress relaxation strategy for preparing high-quality organic–inorganic perovskite thin films via a vapor–solid reaction

A stress relaxation strategy for preparing high-quality organic–inorganic perovskite thin films via a vapor–solid reaction

Novel Strategy for High Efficient and Stable Perovskite Solar Cells through Atomic Layer Deposition

Hindered Phase Transition Kinetics of α‐CsPbI₃ by External Tension

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Mxene regulates the stress of perovskite and improves interface contact for high-efficiency carbon-based all-inorganic solar cells

Cited by 28 publications

References 44 publications

A stress relaxation strategy for preparing high-quality organic–inorganic perovskite thin films via a vapor–solid reaction

A stress relaxation strategy for preparing high-quality organic–inorganic perovskite thin films via a vapor–solid reaction

Novel Strategy for High Efficient and Stable Perovskite Solar Cells through Atomic Layer Deposition

Hindered Phase Transition Kinetics of α‐CsPbI3 by External Tension

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Hindered Phase Transition Kinetics of α‐CsPbI₃ by External Tension