ArticleMicroscopy research and technique2022
Optical emission from focused ion beam milled halide perovskite device cross-sections.
Article in Microscopy research and technique, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 10 citations in OpenAlex.
- Shaping perovskite materials into micro/nanostructures for photonics and optoelectronic applications.Chemical Society reviews · 2026Review
- Understanding Local Crystallography in Solar Cell Absorbers with Scanning Electron Diffraction.Small methods · 2025Article
- Strong angular and spectral narrowing of electroluminescence in an integrated Tamm-plasmon-driven halide perovskite LED.Nature communications · 2024Article
- Metal halide perovskite layers studied by scanning transmission X-ray microscopy.RSC advances · 2022Article
- Optical emission from focused ion beam milled halide perovskite device cross-sections.Microscopy research and technique · 2022Article
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Authors and funding
8 authors at 1 institution in 2 countries.
Funding
Abstract
Cross-sectional transmission electron microscopy has been widely used to investigate organic-inorganic hybrid halide perovskite-based optoelectronic devices. Electron-transparent specimens (lamellae) used in such studies are often prepared using focused ion beam (FIB) milling. However, the gallium ions used in FIB milling may severely degrade the structure and composition of halide perovskites in the lamellae, potentially invalidating studies performed on them. In this work, the close relationship between perovskite structure and luminescence is exploited to examine the structural quality of perovskite solar cell lamellae prepared by FIB milling. Through hyperspectral cathodoluminescence (CL) mapping, the perovskite layer was found to remain optically active with a slightly blue-shifted luminescence. This finding indicates that the perovskite structure is largely preserved upon the lamella fabrication process although some surface amorphisation occurred. Further changes in CL due to electron beam irradiation were also recorded, confirming that electron dose management is essential in electron microscopy studies of carefully prepared halide perovskite-based device lamellae. RESEARCH HIGHLIGHTS: Cathodoluminescence is used to study the emission of focused ion beam milled perovskite solar cell lamellae. The perovskite remained optically active with a slightly blue-shifted luminescence, indicating that the perovskite structure is mostly preserved.
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