Tags: bottom up approach

Online Presentations (1-20 of 46)

  1. ECE 656 Lecture 41: Transport in a Nutshell

    21 Feb 2012 | | Contributor(s):: Mark Lundstrom

  2. Solar Cells Lecture 4: What is Different about Thin-Film Solar Cells?

    29 Aug 2011 | | Contributor(s):: Muhammad A. Alam

    Thin film solar cells promise acceptable efficiency at low cost. This tutorial examines the device physics of thin-film solar cells, which generally require a different type of analysis than crystalline solar cells.

  3. Solar Cells Lecture 5: Organic Photovoltaics

    29 Aug 2011 | | Contributor(s):: Muhammad A. Alam

    Organic solar cells make use of low-cost organic polymers forphotovoltaics. Although these solar cells may appear to be quitedifferent from solar cells made with conventional, inorganicsemiconductors (e.g. they make use of exciton generation rather than electron-hole generation) this...

  4. Spin Transport and Topological Insulators I

    29 Aug 2011 | | Contributor(s):: Supriyo Datta

    A major development of the last two decades, the physical and conceptual integration of what used to be two distinct unrelated fields, namely spintronics and magnetics.

  5. Spin Transport and Topological Insulators II

    19 Aug 2011 | | Contributor(s):: Supriyo Datta

    A major development of the last two decades, the physical and conceptual integration of what used to be two distinct unrelated fields, namely spintronics and magnetics.

  6. Lecture 10: Case study-Near-equilibrium Transport in Graphene

    19 Aug 2011 | | Contributor(s):: Mark Lundstrom

    Near-equilibrium transport in graphene as an example of how to apply the concepts in lectures 1-8.

  7. Solar Cells Lecture 1: Introduction to Photovoltaics

    19 Aug 2011 | | Contributor(s):: Mark Lundstrom

    An introduction to solar cells covering the basics of PN junctions, optical absorption, and IV characteristics. Key technology options and economic considers are briefly presented.

  8. Solar Cells Lecture 2: Physics of Crystalline Solar Cells

    19 Aug 2011 | | Contributor(s):: Mark Lundstrom

    Solar cell performance is determined by generation and recombination of electron-hole pairs. This tutorial focussing on recombination losses in crystalline silicon solar cells under short-circuit and open-circuit conditions.

  9. Lecture 7: The Boltzmann Transport Equation

    17 Aug 2011 | | Contributor(s):: Mark Lundstrom

    Semi-classical carrier transport is traditionally described by the Boltzmann Transport Equation (BTE). In this lecture, we present theBTE, show how it is solved, and relate it to the Landauer Approach usedin these lectures

  10. Lecture 9: Introduction to Phonon Transport

    17 Aug 2011 | | Contributor(s):: Mark Lundstrom

    This lecture is an introduction to phonon transport. Key similarities and differences between electron and phonon transport are discussed.

  11. Lecture 5: Thermoelectric Effects - Mathematics

    16 Aug 2011 | | Contributor(s):: Mark Lundstrom

    Beginning with the general model for transport, we mathematically deriveexpressions for the four thermoelectric transport coefficients:(i) Electrical conductivity,(ii) Seebeck coefficient (or "thermopower"),(iii) Peltier coefficient,(iv) Electronic heat conductivity.

  12. Lecture 6: An Introduction to Scattering

    16 Aug 2011 | | Contributor(s):: Mark Lundstrom

    In this lecture, we show how the mean-free-path (mfp) is related to thetime between scattering events and briefly discuss how the scattering time is related to underlying physical processes.

  13. Lecture 8: Measurements

    16 Aug 2011 | | Contributor(s):: Mark Lundstrom

    A brief introduction to commonly-used techniques, such as van der Pauw and Hall effect measurements.

  14. Tutorial 2: Thermal Transport Across Interfaces - Electrons

    16 Aug 2011 | | Contributor(s):: Timothy S Fisher

    Outline:Thermal boundary resistanceElectronic transportReal interfaces and measurementsCarbon nanotube interfaces

  15. Tutorial 1: Thermal Transport Across Interfaces - Phonons

    15 Aug 2011 | | Contributor(s):: Timothy S Fisher

    Outline:Lattice vibrations and phononsThe vibrating stringInterfaces between dissimilar strings: acousticmismatchDiscrete masses and the vibrational eigenspectrumGeneral thermal transport theory

  16. Lecture 2: General Model for Transport

    28 Jul 2011 | | Contributor(s):: Mark Lundstrom

    Datta's model of a nanodevice is introduced as a general way of describing nanodevices as well, as bulk metals and semiconductors.

  17. Lecture 3: Resistance-Ballistic to Diffusive

    28 Jul 2011 | | Contributor(s):: Mark Lundstrom

    The resistance of a ballistic conductor and concepts, such as the quantumcontact resistance, are introduced and discussed. The results are then generalized to treat transport all the way from the ballistic to diffusive regimes.

  18. Lecture 4: Thermoelectric Effects-Physical Approach

    28 Jul 2011 | | Contributor(s):: Mark Lundstrom

    The effect of temperature gradients on current flow and how electrical currents produce heat currents are discussed.

  19. Lessons from Nanoelectronics

    20 Jul 2011 | | Contributor(s):: Supriyo Datta

    Everyone is familiar with the amazing performance of a modern laptop, powered by a billion-plus nanotransistors, each having an active region that is barely a few hundred atoms long. What is not as appreciated is the deeper understanding of current flow, energy exchange and device operation that...

  20. Lessons from Nanoelectronics (Q&A)

    20 Jul 2011 | | Contributor(s):: Supriyo Datta

    Q&A session from Lessons from Nanoelectronics.