ChemInform Abstract: Growth of GaN Layers on Sapphire by Low-Temperature-Deposited Buffer Layers and Realization of p-Type GaN by Magesium Doping and Electron Beam Irradiation (Nobel Lecture)

ChemInform ◽  
2015 ◽  
Vol 46 (33) ◽  
pp. no-no
Author(s):  
Hiroshi Amano
Keyword(s):  
Electron Beam ◽  
Low Temperature ◽  
Electron Beam Irradiation ◽  
Buffer Layers ◽  
Beam Irradiation ◽  
Nobel Lecture ◽  
P Type

Superconducting Effects in Rapidly Quenched Materials Formed by Ion and Laser Bombardment

1981 ◽  
Vol 4 ◽  
Author(s):  
Bernd Stritzker
Keyword(s):  
Electron Beam ◽  
Low Temperature ◽  
Electron Beam Irradiation ◽  
Pulsed Laser ◽  
Ion Bombardment ◽  
Heavy Ion ◽  
Superconducting Properties ◽  
Beam Irradiation ◽  
Metastable Alloys ◽  
Vapor Quenching

ABSTRACTThe application of low temperature ion bombardment and pulsed laser or electron beam irradiation for the production of rapidly quenched superconducting alloys is described and compared with other more conventionally used non-equilibrium techniques. The comparison is based on the identification of the metastable phases produced by their specific electrical and superconducting properties. It is concluded that low temperature heavy ion bombardment is comparable with vapor quenching whereas laser quenching yields results similar to liquid quenching. Finally, the interesting superconducting properties of these rapidly quenched metastable alloys are discussed.

scholarly journals Thermoelectric Performance of Polypropylene/Carbon Nanotube/Ionic Liquid Composites and Its Dependence on Electron Beam Irradiation

2022 ◽  
Vol 6 (1) ◽  
pp. 25
Author(s):  
Oliver Voigt ◽  
Beate Krause ◽  
Petra Pötschke ◽  
Michael T. Müller ◽  
Sven Wießner
Keyword(s):  
Electron Beam ◽  
Seebeck Coefficient ◽  
Electron Beam Irradiation ◽  
Single Walled Carbon Nanotubes ◽  
Electron Beam Treatment ◽  
Beam Irradiation ◽  
Seebeck Coefficients ◽  
Treated Sample ◽  
P Type ◽  
Walled Carbon Nanotubes

The thermoelectric behavior of polypropylene (PP) based nanocomposites containing single walled carbon nanotubes (SWCNTs) and five kinds of ionic liquids (Ils) dependent on composite composition and electron beam irradiation (EB) was studied. Therefore, several samples were melt-mixed in a micro compounder, while five Ils with sufficiently different anions and/or cations were incorporated into the PP/SWCNT composites followed by an EB treatment for selected composites. Extensive investigations were carried out considering the electrical, thermal, mechanical, rheological, morphological and, most significantly, thermoelectric properties. It was found that it is possible to prepare n-type melt-mixed polymer composites from p-type commercial SWCNTs with relatively high Seebeck coefficients when adding four of the selected Ils. The highest Seebeck coefficients achieved in this study were +49.3 µV/K (PP/2 wt.% SWCNT) for p-type composites and −27.6 µV/K (PP/2 wt.% SWCNT/4 wt.% IL type AMIM Cl) for n-type composites. Generally, the type of IL is decisive whether p- or n-type thermoelectric behavior is achieved. After IL addition higher volume conductivity could be reached. Electron beam treatment of PP/SWCNT leads to increased values of the Seebeck coefficient, whereas the EB treated sample with IL (AMIM Cl) shows a less negative Seebeck coefficient value.

Studies of the Effects of Ion-Implantation and Electron Beam Irradiation on CuInSe2 Single Crystals

1992 ◽  
Vol 262 ◽  
Author(s):  
C. A. Mullan ◽  
C. J. Kiely ◽  
A. Rockett ◽  
M. Imanieh ◽  
M. V. Yakushev ◽  
...  
Keyword(s):  
Electron Beam ◽  
Single Crystals ◽  
Electron Beam Irradiation ◽  
High Dose ◽  
Beam Irradiation ◽  
Thin Foils ◽  
Microstructural Effects ◽  
Vertical Bridgman ◽  
Electron Microscopes ◽  
P Type

ABSTRACTA series of CuInSe2 single crystals which were grown by the vertical Bridgman technique have been implanted with oxygen and xenon ions. These implants tend to cause a change from n to p-type conductivity and an enhancement of the photoconductivity. We present HREM and SIMS characterisation of the microstructural effects caused by high dose ion implants on CuInSe2. We also correlate our data with calculated ion implant profiles. In addition, we show that CuInSe2 thin foils can undergo significant degradation under the electron beam irradiation conditions which are commonly encountered in electron microscopes.

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