Scanning Transmission Electron Microscopy-Energy Dispersive X-Ray/Electron Energy Loss Spectroscopy Studies on SiC-on-Insulator Structures

2000 ◽  
Vol 147 (5) ◽  
pp. 1979 ◽  
Author(s):  
Manabu Ishimaru ◽  
Robert M. Dickerson ◽  
Kurt E. Sickafus
2019 ◽  
Vol 21 (37) ◽  
pp. 21104-21108 ◽  
Author(s):  
Maximilian Lasserus ◽  
Daniel Knez ◽  
Florian Lackner ◽  
Martin Schnedlitz ◽  
Roman Messner ◽  
...  

Vanadium oxide clusters with a mean diameter below 10 nm are created in helium droplets, and after deposition, studied by Scanning Transmission Electron Microscopy (STEM), Electron Energy Loss Spectroscopy (EELS) and UV-vis absorption spectroscopy.


Author(s):  
R. Kumar ◽  
P.J. Phillips ◽  
R.F. Klie

AlxGa1-xN nanowires have promising applications in ultraviolet light emitting diodes (LEDs). However, these nanowires are not typical p-n junction semiconductors, but rather rely on varying concentrations of Al versus Ga to produce electron hole pairs. More information on the atomic structure is needed to better understand the properties of these nanowires. In this study, AlxGa1-xN nanowires were imaged using scanning transmission electron microscopy (STEM) and compared to computer simulated STEM images to obtain physical information on the nanowires. Electron energy-loss spectroscopy (EELS) and FEFF9 computer simulations were also performed to better understand the structural and chemical properties of the nanowires. Results from these simulations showed that changes in the chemical ordering of the nanowires were responsible for changes in intensity and resolution in the images. These intensity and resolution trends were not a result of interface effects. This will help to further characterize nanowires in the future.


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