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Germanium Gradient Optimization for High-Speed Silicon Germanium Hetero-Junction Bipolar Transistors

epitaxial multilayers: III. Preparation of almost perfect multilayers, Journal of Crystal Growth 32 (1976) 265-273 [5] H. Rücker, B. Heinemann, A. Fox. Half-terahertz SiGe BiCMOS technology, In IEEE 12th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (2012) 133–136 [6] B. Heinemann, et al. SiGe HBT technology with f T / f MAX of 300/500 GHz and 2.0 ps CML gate delay, In IEEE 2010 International Electron Devices Meeting (2010) 688–691 [7] P. Chevalier, T.F. Meister, B. Heinemann, et al. Towards THz SiGe HBTs, In IEEE Bipolar

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Removal of Methylene Blue by Activated Glass Foams with TiO2 in Dark and Simulated Solar Light

Abstract

The effect of germanium trapezoidal profile shape on the direct current (DC) current gain (βF), cut-off frequency (fT) and maximum oscillation frequency (fMAX) of silicon-germanium (SiGe) hetero-junction bipolar transistors (HBTs) has been investigated. The energy balance (EB), hydrodynamic (HD) and drift-diffusion (DD) physical transport models in SILVACO technology computer aided design (T-CAD) simulator were used. It was found that the current gain values using energy balance model are higher than hydrodynamic and much higher than those corresponding to drift-diffusion. Moreover, decreasing the germanium gradient slope towards the collector side of the base enhances the maximum oscillation frequencies using HD and EB models whilst, they remain stable for DD model.

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Spin Coating Method Fabricated of In2O3 Thin Films

References [1] K. Sajilal, A. Moses Ezhil Raj, Optik 127 (2016) 1442–1449. [2] J. Robertson, S.J. Clark, Physical Review B 83 (2011) 075205. [3] M.V. Frischbier, H.F. Wardenga, M. Weidner, O. Bierwagen, J. Jia, Y. Shigesato, A. Klein, Thin Solid Films 614 (2016) 614, 62–68. [4] M. Weidner, A. Fuchs, T.J.M. Bayer, K. Rachut, P. Schnell, G.K. Deyu, A. Klein, Advanced Functional Materials 29 (2019) 1807906. [5] M.A. Fakhri, Engineering and Technology Journal 32 Part (A) (2014) 1323-1330. [6] W.J. Kim, D. Pradhan, Y. Sohn, Journal

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Annals of West University of Timisoara - Physics
The Journal of West University of Timisoara
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Nonthermal Argon Plasma Generator and Some Potential Applications

References [1] T. J. M. Boyd, and J. J. Sanderson, “The physics of plasmas”, Cambridge University Press, Cambridge (2003) [2] I. Bica, “The Physics and the Technology of Materials in Plasma”, Mirton Press, Timisoara (2005) [3] I. Bica, Rev. de Sold., Spain, 26 (1996) 191-200 [4] I. Bica, J. Ind. Eng. Chem., 14 (2008) 230-235 [5] I. Bica, J. Ind Eng. Chem., 15 (2009) 304-315 [6] R. Hippler, S. Pfan, and M. Schmidt, “Low temperature plasma physics: fundamental

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Estimating Global Solar Radiation from Routine Meteorological Parameters Over a Tropical City (7.23°N; 3.52°E) Using Quadratic Models

References [1] FAO Corporate Document Respository: “Crop evapotranspiration for computing crop requirement”. [2] Angstom A.S. (1924) “Solar and Terrestrial Radiation” Meteorol. Soc. Vol. 50 pp 121-126 [3] Okundamiya S. and A. N. Nzeako (2010) “Empirical model for estimating global solar radiation on horizontal surfaces for selected cities in the six geopolitical zones in Nigeria,” Research Journal of Applied Science, Engineering and Technology, vol. 2, no. 8, pp. 805–812. [4] Fagbenle RO (1990): Estimation of total solar radiation in

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Determination of Maximum Horizontal Distance (XMHD) Travelled by Landfill Leachate from Lapite Dumpsite in Ibadan, Southwestern Nigeria

References [1] Shao-gang Dong, Zhong-hua Tang, Bai-wei Liu, and O. D. Orodu, Numerical modeling of the environment impact of landfill leachate leakage on groundwater quality-A field application International Conference on Environmental Science and Information Application Technology. 2009: 565-568 [2] P.B Kjeldsen, M. A. Rooker, A. P. Baun, A. Ledin, A. and T. H Christensen, “Present and long-term composition of MSW landfill leachate: a review”, Critical Reviews in Environmental Science and Technology. 2002: 32, 297-336. [3] D. L. Jensen and T

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Optical Modeling and Simulation of Tandem Metal Oxide Solar Cells

References [1] Ø. Nordseth, R. Kumar, K. Bergum, L. Fara, S. E. Foss, H. Haug, F. Dragan, D. Craciunescu, P. Sterian, I. Chilibon, C. Vasiliu, L. Baschir, D. Savastru, E. Monakhov, B. G. Svensson. Optical Analysis of a ZnO/Cu 2 O Subcell in a Silicon-Based Tandem Heterojunction Solar Cell, Green and Sustainable Chemistry 7 (2017) 57-69 [2] L. Fara, A. Diaconu, F. Dragan. Trends, Challenges and Opportunities in Advanced Solar Cells Technologies and PV Market, Journal of Green Engineering 5 (2016) 157-186 [3] Y. Takiguchi, S. Miyajima. Device

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Laser Heating of the Core-Shell Nanowires

] J. Buschbeck et all, J. Appl. Phys. 100 , 123901 (2006). [7] COMSOL Multiphysics, Heat Transfer Module and Structural Module. [8] A. Helebrant, C. Buerhop, R. Weiβmann Glass Technology 34 4 (1993). [9] C. J. Smitthels, Metals Reference Book. [10] F. Cardarelli, The Handbook of Optical Materials. [11] B. A. Bosley, J. H. Weiner, Theory of Thermal Stresses, Wiley, New York (1960). [12] N. Noda, R. B. Hetnarski and Y. Tanigawa, Thermal Stresses, 2nd ed. Taylor and Francis, New York (2003). [13] S. N. Hsiao, S. H. Liu

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Fluid Flow Control in Domestic Hot Water Systems During Days with Different Radiative Stability Levels

Windows 2002 San Jose CA 95110 USA: SYSTAT Software Inc. 1735 Technology Drive Suite 430.

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