Applications of Electron Beam-induced Current at p-n Junction in InSb Devices
Xiangle Sun,
Haichuan Yin,
Xuegong Yu,
Qian Sun,
Xuqian Bai
Issue:
Volume 11, Issue 3, May 2022
Pages:
52-59
Received:
28 January 2022
Accepted:
16 February 2022
Published:
7 May 2022
DOI:
10.11648/j.ajmp.20221103.11
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Abstract: Being able to visually “see” a p-n junction in a semiconductor is advantageous to the design and fabrication of semiconductor devices. Electron beam-induced current (EBIC) was employed in this study to observe the p-n junction in InSb devices, and both Schottky and p-n junctions were observed through EBIC signal distribution. The temperature dependence of Cr-InSb (chromium-indium antimonide) Schottky junction was discovered unexpectedly. When Schottky junction’s temperature decrease, Schottky junction itself will have a new space charge region. This new space charge region is out of Schottky junction itself. Both the new space charge region and Schottky junction’s space charge region have same character. The new space charge region will enlarge with temperature decrease. This new space charge region is called Schottky response zone. For a InSb device which uses Cr as the Ohmic contact material, the Schottky junction was formed at the Cr-InSb interface. The Schottky response zone extends to 47μm at 80K. The space charge region of the p-n junction fabricated using ion-beam implantation in the InSb device has an asymmetrical spatial distribution. The aforementioned region on the n-type side is thinner and has larger charge density than that on the p-type side. As one of the most useful analytical methods, EBIC offers the advantage of a microscopic and perspective view for the observation and analysis of semiconductor devices without damaging the devices themselves.
Abstract: Being able to visually “see” a p-n junction in a semiconductor is advantageous to the design and fabrication of semiconductor devices. Electron beam-induced current (EBIC) was employed in this study to observe the p-n junction in InSb devices, and both Schottky and p-n junctions were observed through EBIC signal distribution. The temperature depend...
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Magnetized Two-Fluid Spin Quantum Plasmas and Impurity Effect
Farshid Nooralishahi,
Mohammad Kazem Salem,
Mohammad Reza Tanhayi
Issue:
Volume 11, Issue 3, May 2022
Pages:
60-66
Received:
10 December 2021
Accepted:
5 January 2022
Published:
14 June 2022
DOI:
10.11648/j.ajmp.20221103.12
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Abstract: In an electron-ion plasma, ions can consider are fixed and electrons moving due to the high mass of ions relative to electrons. In a piece of metal, free electrons are almost like electrons in a plasma, and ions are stationary. By applying electric and magnetic fields, the behavior of these electrons can be predicted by studing the two-fluid electron-ion model. This paper derives a set of two-fluid (electron-ion) plasma equations based on the quantum magnetic hydrodynamic model (QMHD) for each of the two electron-ion fluids. We consider the electron-ion as two different types of particles and follow a path for discussion that is different from the usual path and obtain new dispersion equations. We consider the two regimes of non-spin and spin plasma separately and analyze the propagation of waves that correspond to perturbations in parallel and perpendicular to the external magnetic field, and obtain their vibrational modes. Then we return to the subject of the metal part and the ions and set the flow velocity of the ions to zero. Finally, we consider a one-dimensional grid of ions, at any given length L0, with one electron impurity as a Fermi polaron. We study its effect on ground state energy. Due to the long-range nature of the electron-ion interaction, these systems have several properties distinct from their ordinary counterparts such as the simultaneous presence of several stable. Surprisingly, the residue of electrons is shown to increase with the Fermi density for fixed interaction strength.
Abstract: In an electron-ion plasma, ions can consider are fixed and electrons moving due to the high mass of ions relative to electrons. In a piece of metal, free electrons are almost like electrons in a plasma, and ions are stationary. By applying electric and magnetic fields, the behavior of these electrons can be predicted by studing the two-fluid electr...
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