PPT-PHYS389 - Semiconductor Applications L13

1 Lecture 13 Radiation detectors II Germanium detectors Planar Coaxial Energy resolution Efficiency PHYS389 Semiconductor Applications L13 2 Interaction of gammarays with matter Gamma radiation is a very penetrating form of radiation that does not directly ionise the material through with it travels. Smartphones have more features and applications that can utilize external accessories and the number of different external accessories will continue to grow in the future The challenge in designing new phones is how to connect to all these new acces Fig 31.21: NORbased ROM arrayAs we know, only one word line is activated at a time by raising tis voltage to VDD, while all other rows are held at a low votlage level. If an active transistor exists a Applications Outside Semiconductor Technology Let's first look at applications of thin films outside of semiconductor technology - so we know and then can forget it for the time being. What we have, v Lorelei Lewandowski. 4/20/2015. There are 7 II-VI semiconductor materials. Because of their direct, wide band gap energy, they are becoming increasingly useful in optical applications. While some of them have been around for many years, research is still needed to determine the full potential of others. The “latest and greatest” technology in the near future will most likely owe much of its success to these materials.. by: Warren SchultzDiscrete Applications EngineeringThe most popular silicon pressure sensors are piezoresistive bridges that produce a differential output voltage in response to pressure applied to a Cody Nascene. Jake Clifton. The semiconductor power diode has been used extensively in various power applications such as power rectifiers and power supplies. Diodes. Since the invention of semiconductor materials and the eventually birth of the modern day power diode, its usefulness has become apparent to engineers and other electrical designers. As new technology is improving efficiencies and versatility, engineers are finding more ways to use the power diode than ever before.. Lecture 7 & 8. Hierarchy of Semiconductor Models. Introduction. Nowadays, semiconductor materials are contained in almost all electronic . de-vices. . . Some . examples of semiconductor devices and their use are described in . Andrew Turner 4/25/2015. Abstract. Carbon . nanotubes. are small tubes of carbon fiber that are prized for their electrical, mechanical and thermal properties making them ideal for a variety of applications. CNTs small size and thermal properties make them ideal for future transistor and interconnect production providing a solution to the problem of Moore’s Law. In addition, CNT’s mechanical properties can be tied in with their electrical properties to produce a variety of sensors and related devices.. Lorelei Lewandowski. 4/20/2015. There are 7 II-VI semiconductor materials. Because of their direct, wide band gap energy, they are becoming increasingly useful in optical applications. While some of them have been around for many years, research is still needed to determine the full potential of others. The “latest and greatest” technology in the near future will most likely owe much of its success to these materials.. High current capability, low forward voltage dropHigh current capability, low forward voltage drop High temperature soldering guaranteed: 250 /10 seconds, 0.25"(6.35mm) from caseHigh temperature so L14. Lecture . 14: . Radiation detectors III. Germanium detectors. Interactions in surroundings. Graded shielding. Linear Attenuation Coefficients. Build-up factor. Spectrum Analysis. PHYS389 : Semiconductor Applications L14. Lecture-27. Photo-Catalysis. Acceleration of a photoreaction in the presence of a catalyst. . Photon is absorbed by an adsorbed substrate. . Photocatalytic activity (PCA) depends on the ability of the catalyst to create electron–hole pairs.. Asma. . Alwaei. Review of Semiconductor Physics. a) Energy level diagrams showing the excitation of an electron from the valence band to the conduction band.. The resultant free electron can freely move under the application of electric field.. Semiconductor detectors have a . high density. . . ● large energy loss in a short distance. . ● diffusion effect is smaller than in gas detectors resulting in achievable position resolution of less then 10 .