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Bandstructure Effects in Nano Devices With NEMO: from Basic Physics to Real Devices and to Global Impact on nanoHUB.org
Online Presentations | 08 Mar 2019 | Contributor(s):: Gerhard Klimeck
This presentation will intuitively describe how bandstructure is modified at the nanometer scale and what some of the consequences are on the device performance.
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Tutorial 4a: High Bias Quantum Transport in Resonant Tunneling Diodes
Online Presentations | 29 Mar 2011 | Contributor(s):: Gerhard Klimeck
Outline:Resonant Tunneling Diodes - NEMO1D: Motivation / History / Key InsightsOpen 1D Systems: Transmission through Double Barrier Structures - Resonant TunnelingIntroduction to RTDs: Linear Potential DropIntroduction to RTDs: Realistic Doping ProfilesIntroduction to RTDs: Relaxation Scattering...
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Tutorial 4c: Formation of Bandstructure in Finite Superlattices (Exercise Session)
Online Presentations | 29 Mar 2011 | Contributor(s):: Gerhard Klimeck
How does bandstructure occur? How large does a repeated system have to be? How does a finite superlattice compare to an infinite superlattice?
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Tutorial 4d: Formation of Bandstructure in Finite Superlattices (Exercise Demo)
Online Presentations | 29 Mar 2011 | Contributor(s):: Gerhard Klimeck
Demonstration of thePiece-Wise Constant Potential Barriers Tool.
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Nanoelectronic Modeling Lecture 25a: NEMO1D - Full Bandstructure Effects
Online Presentations | 07 Jul 2010 | Contributor(s):: Gerhard Klimeck
(quantitative RTD modeling at room temperature)
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Nanoelectronic Modeling Lecture 23: NEMO1D - Importance of New Boundary Conditions
Online Presentations | 09 Mar 2010 | Contributor(s):: Gerhard Klimeck
One of the key insights gained during the NEMO1D project was the development of new boundary conditions that enabled the modeling of realistically extended Resonant Tunneling Diodes (RTDs). The new boundary conditions are based on the partitioning of the device into emitter and collector...
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Nanoelectronic Modeling Lecture 24: NEMO1D - Incoherent Scattering
Online Presentations | 09 Mar 2010 | Contributor(s):: Gerhard Klimeck
Incoherent processes due to phonons, interface roughness and disorder had been suspected to be the primary source of the valley current of resonant tunneling diodes (RTDs) at the beginning of the NEMO1D project in 1994. The modeling tool NEMO was created at Texas Instruments to fundamentally...
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Nanoelectronic Modeling Lecture 25b: NEMO1D - Hole Bandstructure in Quantum Wells and Hole Transport in RTDs
Online Presentations | 09 Mar 2010 | Contributor(s):: Gerhard Klimeck
Heterostructures such as resonant tunneling diodes, quantum well photodetectors and lasers, and cascade lasers break the symmetry of the crystalline lattice. Such break in lattice symmetry causes a strong interaction of heavy-, light- and split-off hole bands. The bandstructure of holes and the...
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Nanoelectronic Modeling Lecture 26: NEMO1D -
Online Presentations | 09 Mar 2010 | Contributor(s):: Gerhard Klimeck
NEMO1D demonstrated the first industrial strength implementation of NEGF into a simulator that quantitatively simulated resonant tunneling diodes. The development of efficient algorithms that simulate scattering from polar optical phonons, acoustic phonons, alloy disorder, and interface roughness...