Microstress for metal halide perovskite solar cells: from source to influence and management

Lei, Yixiao; Liu, Wenwu; Li, Caixia; Da, Shiji; Zheng, Yawen; Wu, Youzhi; Ran, Fen

doi:10.1039/d3nr05264h

Nanoscale

2024

DOI: 10.1039/d3nr05264h

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Microstress for metal halide perovskite solar cells: from source to influence and management

Yixiao Lei,

Wenwu Liu,

Caixia Li

et al.

Abstract: The power conversion efficiency of metal halide perovskite solar cells has increased dramatically in recent years, but there are still major bottlenecks in the commercial application of such materials, including...

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Cited by 2 publications

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Strain in Halide Perovskite Solar Cells: Origins, Impacts, and Regulation

Guo,

Li,

Kim

et al. 2024

Solar RRL

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Perovskite solar cells have made significant progress in the past decade, demonstrating promising potential for next‐generation solar technology. However, the strain‐induced intrinsic instability of mixed‐halide perovskites poses a significant obstacle to their widespread commercialization. Relaxation of the perovskite lattice strain is a crucial approach for enhancing photovoltaic performance and broadening their application potential. In this study, the authors conduct an analysis of strain progression in perovskite thin films, examining its impact on the physical properties of perovskites and the performance of perovskite solar cells. Furthermore, they explore its influence on device stability from the perspectives of phase transitions, chemical decomposition, and mechanical fragility. Additionally, they provide a summary of key advancements in strain‐relaxation strategies and offer design principles and synthetic approaches to address the issue of lattice strain in perovskites. This paper is intended to lay the groundwork for the theoretical development of effective strain‐relaxation methods, moving beyond sole reliance on empirical optimization.

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Strain in Halide Perovskite Solar Cells: Origins, Impacts, and Regulation

Guo,

Li,

Kim

et al. 2024

Solar RRL

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Impact of Residual Strains on the Carrier Mobility and Stability of Perovskite Films

Slimani,

Gerlein,

Izquierdo

et al. 2024

Nanomaterials

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Solution-based inorganic–organic halide perovskites are of great interest to researchers because of their unique optoelectronic properties and easy processing. However, polycrystalline perovskite films often show inhomogeneity due to residual strain induced during the film’s post-processing phase. In turn, these strains can impact both their stability and performance. An exhaustive study of residual strains can provide a better understanding and control of how they affect the performance and stability of perovskite films. In this work, we explore this complex interrelationship between residual strains and electrical properties for methylammonium CH3NH3PbI3−xClx films using grazing incidence X-ray diffraction (GIXRD). We correlate their resistivity and carrier mobility using the Hall effect. The sin2(ψ) technique is used to optimize the annealing parameters for the perovskite films. We also establish that temperature-induced relaxation can yield a significant enhancement of the charge carrier transports in perovskite films. Finally, we also use Raman micro-spectroscopy to assess the degradation of perovskite films as a function of their residual strains.

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Microstress for metal halide perovskite solar cells: from source to influence and management

Abstract: The power conversion efficiency of metal halide perovskite solar cells has increased dramatically in recent years, but there are still major bottlenecks in the commercial application of such materials, including...

Cited by 2 publications

References 98 publications

Strain in Halide Perovskite Solar Cells: Origins, Impacts, and Regulation

Strain in Halide Perovskite Solar Cells: Origins, Impacts, and Regulation

Impact of Residual Strains on the Carrier Mobility and Stability of Perovskite Films

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