Fig. 2: Regulating lattice strain to suppress ion migration. | Nature Communications

Fig. 2: Regulating lattice strain to suppress ion migration.

From: Lattice stabilization and strain homogenization in Sn-Pb bottom subcells enable stable all-perovskite tandems solar cells

Fig. 2

Integrated differential phase contrast (IDPC) images, geometric phase analysis (GPA) strain maps(exy), and fast Fourier transform (FFT) patterns of the perovskite lattice for a control, b SDS modified, and c NTS modified films after 20 h of light exposure. d Stress statistics of control, SDS modified, and NTS modified perovskite films before and after 20 h of illumination, derived from Grazing incidence X-ray diffraction (GIXRD) analysis. e Arrhenius plots of conductivity for control, SDS modified, and NTS modified perovskite films. Time-of-flight secondary ion mass spectrometry (TOF-SIMS) depth profiles of halide migration under light 40 h for f pristine perovskite film and g perovskite film with NTS.

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