Hot Electrons in III-V Compound Semiconductors

1973 ◽  
pp. 89-105
Author(s):  
H. Pötzl
Author(s):  
D. R. Liu ◽  
S. S. Shinozaki ◽  
R. J. Baird

The epitaxially grown (GaAs)Ge thin film has been arousing much interest because it is one of metastable alloys of III-V compound semiconductors with germanium and a possible candidate in optoelectronic applications. It is important to be able to accurately determine the composition of the film, particularly whether or not the GaAs component is in stoichiometry, but x-ray energy dispersive analysis (EDS) cannot meet this need. The thickness of the film is usually about 0.5-1.5 μm. If Kα peaks are used for quantification, the accelerating voltage must be more than 10 kV in order for these peaks to be excited. Under this voltage, the generation depth of x-ray photons approaches 1 μm, as evidenced by a Monte Carlo simulation and actual x-ray intensity measurement as discussed below. If a lower voltage is used to reduce the generation depth, their L peaks have to be used. But these L peaks actually are merged as one big hump simply because the atomic numbers of these three elements are relatively small and close together, and the EDS energy resolution is limited.


1981 ◽  
Vol 42 (C7) ◽  
pp. C7-215-C7-220 ◽  
Author(s):  
V. Bareikis ◽  
A. Galdikas ◽  
R. Miliu¡yté ◽  
J. Pozhela ◽  
Viktoravičius
Keyword(s):  

1981 ◽  
Vol 42 (C7) ◽  
pp. C7-117-C7-122 ◽  
Author(s):  
R. Brunetti ◽  
C. Jacoboni ◽  
L. Reggiani
Keyword(s):  

2016 ◽  
Vol 187 (09) ◽  
pp. 971-979
Author(s):  
Vladimir A. Gritsenko
Keyword(s):  

2009 ◽  
Vol 68 (6) ◽  
pp. 549-554
Author(s):  
Yu. Ye. Kamenev ◽  
F. F. Sizov ◽  
V. N. Dobrovolsky

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Wenhao Wang ◽  
Lucas V. Besteiro ◽  
Peng Yu ◽  
Feng Lin ◽  
Alexander O. Govorov ◽  
...  

Abstract Hot electrons generated in metallic nanostructures have shown promising perspectives for photodetection. This has prompted efforts to enhance the absorption of photons by metals. However, most strategies require fine-tuning of the geometric parameters to achieve perfect absorption, accompanied by the demanding fabrications. Here, we theoretically propose a Ag grating/TiO2 cladding hybrid structure for hot electron photodetection (HEPD) by combining quasi-bound states in the continuum (BIC) and plasmonic hot electrons. Enabled by quasi-BIC, perfect absorption can be readily achieved and it is robust against the change of several structural parameters due to the topological nature of BIC. Also, we show that the guided mode can be folded into the light cone by introducing a disturbance to become a guided resonance, which then gives rise to a narrow-band HEPD that is difficult to be achieved in the high loss gold plasmonics. Combining the quasi-BIC and the guided resonance, we also realize a multiband HEPD with near-perfect absorption. Our work suggests new routes to enhance the light-harvesting in plasmonic nanosystems.


Small ◽  
2021 ◽  
pp. 2102429
Author(s):  
Menglin Huang ◽  
Zenghua Cai ◽  
Shanshan Wang ◽  
Xin‐Gao Gong ◽  
Su‐Huai Wei ◽  
...  

1965 ◽  
Vol 9 (1) ◽  
pp. 69-70 ◽  
Author(s):  
P. J. Price
Keyword(s):  

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