Kociak, M,; Stéphan, O.; Gloter, A.; Zagonel, L. F.; Tizei, L. H. G.; Tencé, M.; March, K.; Blazit, J. D.; Mahfoud, Z.; Losquin, A.; Meuret, S.; Colliex, C.
Spindle shaped tetragonal La2(MoO4)3: Eu3+ phosphors were synthesized by a polyol mediated solvothermal synthesis method. Growth mechanism for the formation of spindles was explained by increasing the reaction temperature.
Data courtesy of Dr. R. Williams, Ohio State University.
a) Dark field STEM image of GaN/AlN heterostructure nanowire with nominally 3 nm thick GaN quantum wells and 4 nm thick AlN barrier layers; GaN is bright in DF image; (b) Cathodoluminescence (CL) spectrum-image acquired from region indicated by green rectangle in (a) with intensity at 491 ±10 nm
Sample courtesy of J. Griffiths, University of Cambridge
(a) Dark field STEM image revealing six 3 nm thick InGaN wells; (b) Cathodoluminescence (CL) image of same region (acquired simultaneously) showing up to 20x variation in the luminescence efficiency locally; (c) Overlay of DF and CL STEM images with the position of threading dislocations shown by
Data courtesy of Dr. G. Fern, ETC, University of Brunel
Cathodoluminescence spectrum of Europium-doped yttrium oxide particle measured with Vulcan system. Europium ion d-to-f interband transitions produce narrow emission lines; excellent energy resolution of Vulcan™ system resolves two spectral peaks with peak-to-peak separation of only 1.6 meV.
Image courtesy of Dr. J. Schieber, Indiana University.
Quartz grains from granite and metamorphic source with low temperature quartz cement (bluish). There is a later (hotter) overprint (reddish) along grain boundaries in the overgrowth.
Data courtesy of Dr. M. Bosman, A*STAR IMRE, Singapore
Cathodoluminescence investigation of gold prisms in the STEM: (a) and (b) are bright field TEM images and (c) and (d) are the cathodoluminescence intensity maps recorded in STEM mode from particles (a) and (b) respectively.
