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Revealing the distribution of organic materials in the SEM

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Data courtesy of G Nichols, Pfizer UK

Distribution of drug within a pharmaceutical pill. Composite color image showing the spatial distribution of the micronized drug, salmeterol xinafoate.
Dislocation density analysis in semiconductors

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Panchromatic cathodoluminescence image of bulk GaN sample. Dark spots (some indicated by blue arrows) correspond to threading dislocations. A dislocation density of 5 x 105 cm-2 was measured. Acquisition time = 30 s.
Correlating microstructure with luminescence properties at the nanoscale

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Data courtesy of Dr. R. Williams, Ohio State University

Cathodoluminescence analysis of a GaN/AlN nanowire in STEM (a) Dark field STEM image, (b) cathodoluminescence spectrum-image acquired from the region indicated by the green rectangle in (a), (c) A cathodoluminescence spectrum extracted from the spectrum-image, and (d) a projection of the cathodol
Direct electronic property imaging of a nanocrystal-based photovoltaic device by electron beam-induced current via scanning electron microscopy

Publication
Journal of Physical Chemistry Letters
Ng, A.; Poplawsky, J. D.; Li, C.; Pennycook, S. J.; Rosenthal, S. J.

Scanning electron microscopy (SEM) electron beam-induced current (EBIC) studies were performed on the cross-section of a nanocrystal-based hybrid bulk heterojunction photovoltaic device.
Cathodoluminescence image of paint pigment

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Data courtesy of Prof. Nicholas Leventis, Chemistry Department, Missouri University of Science and Technology

Cathodoluminescence image of paint pigment sample prepared with Ilion II and imaged with MonoCL4™ system.
Cathodoluminescence spectrum imaging of polycrystalline diamond

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Data courtesy of Dr. E. Vicenzi, Smithsonian Institute

(a) Composite cathodoluminescence image of polycrystalline diamond created using red, green, and blue spectrally filtered cathodoluminescence images. Radioactive fluid ingress along grain boundaries leads to radiation halo effects being observed (yellow).
Cathodoluminescence spectrum-imaging of a gallium arsenide (GaAs) nanowire

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Data courtesy of Dr. U. Jahn, Paul-Drude-Institut für Festkörperelektronik.

(a) Secondary electron image of a 200 nm diameter GaAs nanowire; (b) Cathodoluminescence spectrum-image displaying energy plane 1.46 ± 0.02 eV; (c) Individual cathodoluminescence spectrum extracted from spectrum-image with single peak at 1.45 eV; (d) Map of central energy of luminescence; change
Surface plasmon resonance modes

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Local surface plasmon resonance mode (LSPR) mapping of gold pyramids using cathodoluminescence. (a) Composite image of secondary electron image (gray) and, 650 nm (green) and 750 nm (red) monochromatic cathodoluminescence images.
Structural defects responsible for excessive leakage current in Schottky diodes prepared on undoped n-GaN films grown by hydride vapor phase epitaxy

Publication
Journal of Vacuum Science & Technology B
Polyakov, A. Y.; Yakimov, E. B.; Smirnov, N. B.; Govorkov, A. V.; Usikov, A. S.; Helava, H.; Makarov, Y. N.; Lee, I. H.

Schottky diodes fabricated on undoped n-GaN films grown by hydride vapor phase epitaxyshowed more than two orders of magnitude higher reverse current if the films contained open core defects.
3C–SiC nanowires luminescence enhancement by coating with a conformal oxides layer

Publication
Journal of Physics D: Applied Physics
Fabbri, F.; Rossi, F.; Lagonegro, P.; Negri, M.; Ponraj, J. S.; Bosi, M.; Attolini, G.; Salviati, G.

In this work, we report the light emission properties of different classes of 3C–SiC nanowires.

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