ima hyperspectral microscope  (Photon Etc)

Journal: Nature Communications

Article Title: Nanoscale heterophase regulation enables sunlight-like full-spectrum white electroluminescence

doi: 10.1038/s41467-025-58743-0

Figure Lengend Snippet: a – c Hyperspectral images of α -CsPbI 3 and α -CsPb(I/Cl) 3 QDs film ( a ), the γ / δ -CsPbI 3 and γ / δ -CsPb(I/Cl) 3 film ranging from 660 to 700 nm ( b ) and the γ / δ -CsPbI 3 and γ / δ -CsPb(I/Cl) 3 film ranging from 400 to 600 nm ( c ), the scalebar is 2 μm. Spatially resolved confocal fluorescence-lifetime imaging microscopy of the heterophase film (> 600 nm) ( d ) and the heterophase film (<600 nm) ( e ), the scalebar is 2 μm. f PL lifetime of the γ / δ -CsPbI 3 and γ / δ -CsPb(I/Cl) 3 film. The temperature-dependent PL spectroscopy of α-CsPbI 3 and α -CsPb(I/Cl) 3 QDs film ( g ), γ / δ -CsPbI 3 film ( h ) and γ / δ -CsPb(I/Cl) 3 film ( i ). Early-time transient absorption spectra measurements of perovskite thin films (0–2 ps average) with different annealing times under 400 nm pump ( j ) and 560 nm pump ( k ). l Schematic of PL phenomena of band-to-band luminescence from γ -CsPbI 3 and STE luminescence from δ -CsPbI 3 .

Article Snippet: For hyperspectral microscopy, PL mappings were captured using a wide-field hyperspectral microscope (IMA VISTM, Photon, etc.) with a low-noise silicon CCD camera, and the samples were illuminated by a continuous-wave 405 nm laser with an excitation density of 100 mW cm −2 .

Techniques: Fluorescence, Imaging, Microscopy, Spectroscopy