GIWAXS using microbeam applied in halide perovskite films for high spectral resolution and mapping capability

Fu, M.; He, B.; Zhang, L.; Su, Z.; Miao, Y.; Sun, Q.; Zhang, J.; Wang, S.; Wang, Z.; Wang, X.; Wang, Y.; Sun, B.; Wen, W.; Zhao, Y.; Wang, C.; Gao, X.

doi:10.1107/S1600577526004303

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Figure 2
(a) Waterfall plot showing 1D µ-GIWAXS spectra by the azimuthal integration for 7.5 nm⁻¹ ≤ q ≤ 18 nm⁻¹ at varying incident angles measured from an MAPbI₃ film. (b) 1D integrated µ-GIWAXS profiles of the MAPbI₃ (110) peak at varying incident angles. (c) Stitched 2D diffraction pattern from the same perovskite film measured at different grazing incident angles. (d) Correlation between the MAPbI₃ (110) diffraction peak FWHM and the incident angles as well as their corresponding footprint lengths. 2D µ-GIWAXS patterns obtained using (e) fixed-point and (f) fly scanning modes, respectively. (g) Radially integrated intensity plots along the MAPbI₃ (110) diffraction ring, measured at a fixed point and by beam-direction-perpendicular fly scanning. (h) Statistical distribution of the curve differences calculated from (g).

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 33| Part 4| July 2026|

https://doi.org/10.1107/S1600577526004303

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