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<p>Triple halide perovskites (3Hal) are especially notable for their adjustable bandgap, which makes them ideal for use in tandem solar cells alongside silicon bottom cells. The effect of temperature, moisture, and X-ray on (Cs<sub>0.22</sub>FA<sub>0.78</sub>)Pb(I<sub>0.85</sub>Br<sub>0.15</sub>)<sub>3</sub> + 3&#xa0;mol % MAPbCl<sub>3</sub> has been studied to investigate the stability of this wide bandgap perovskite for solar cell application. Angle-resolved X-ray photoelectron spectroscopy (ARXPS) is employed to examine the chemical composition of the perovskite film surfaces as well as of the bulk material. The samples are monitored over a period of 30&#xa0;days to observe how the perovskite absorber layer degrades. Humidity and temperature play a vital role in decomposing the perovskite film. Chemical decomposition is more prominent at higher emission angles.</p> Graphical abstract <p></p>

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Stability investigations of triple halide perovskite: A detailed study using angle-resolved XPS

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月27日

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  • Md Mahamudujjaman,
  • Sujan Pyakurel,
  • Wilhelmus J. Geerts

摘要

Triple halide perovskites (3Hal) are especially notable for their adjustable bandgap, which makes them ideal for use in tandem solar cells alongside silicon bottom cells. The effect of temperature, moisture, and X-ray on (Cs0.22FA0.78)Pb(I0.85Br0.15)3 + 3 mol % MAPbCl3 has been studied to investigate the stability of this wide bandgap perovskite for solar cell application. Angle-resolved X-ray photoelectron spectroscopy (ARXPS) is employed to examine the chemical composition of the perovskite film surfaces as well as of the bulk material. The samples are monitored over a period of 30 days to observe how the perovskite absorber layer degrades. Humidity and temperature play a vital role in decomposing the perovskite film. Chemical decomposition is more prominent at higher emission angles.

Graphical abstract