Multilayer structures of cobalt and silicon have been deposited as an ohmic contact on n-type 4H-SiC substrates in order to obtain lower contact resistance and higher thermal stability. The metal structures were prepared by using electron beam evaporation on top of the silicon face [...]
2019-08-06meta-author
PAM XIAMEN offers Cesium iodide crystals.
Cesium iodide crystals include three different types: CsI(Tl), CsI(Na) and pure CsI.
CsI(Tl) is the most popular alkali halide scintillation crystal apart from NaI(Tl). Light output: 45% in NaI(Tl). Its emission spectrum has a broad band at 350-700nm and a peak at 550nm. Its [...]
2019-03-11meta-author
Gas filled prototype of a CdZnTe pixel detector
CdZnTe pixel structures are currently the most promising detectors for the focal planes of hard X-ray telescopes, for astronomical observation in the range 5–100 keV. In Sharma et al. (Proc. SPIE 3765 (1999) 822) and Ramsey et al. [...]
2013-10-09meta-author
Wide Bandgap Technology –Next Generation Power Devices
The tightening of industry standards and changes in government regulations are key drivers of higher energy efficiency. For example, data centers are growing exponentially to meet demand. They use about 3% of the world’s total electricity supply (400 [...]
2018-08-30meta-author
High-power broad-area InGaNAs/GaAs quantum-well (QW) edge-emitting lasers on GaAs substrates in the 1200 nm range are reported. The epitaxial layers of the InGaNAs/GaAs QW laser wafers were grown on n+-GaAs substrates by using metal-organic chemical vapor deposition (MOCVD). The thickness of the InGaNAs/GaAs QW layers [...]
Numerical simulation of pixellated CdZnTe detector for medical radionuclide imaging application
The recent development of CdZnTe detectors has made it possible to produce CdZnTe based clinical radionuclide imagers. We therefore investigate the pixellation geometry ideal for this application using numerical simulation. These studies indicate that, for a fixed pixel [...]