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Tags: devices

Description

On June 30, 1948, AT&T Bell Labs unveiled the transitor to the world, creating a spark of explosive economic growth that would lead into the Information Age. William Shockley led a team of researchers, including Walter Brattain and John Bardeen, who invented the device. Like the existing triode vacuum tube device, the transistor could amplify signals and switch currents on and off, but the transistor was smaller, cheaper, and more efficient. Moreover, it could be integrated with millions of other transistors onto a single chip, creating the integrated circuit at the heart of modern computers.

Today, most transistors are being manufactured with a minimum feature size of 60-90nm--roughly 200-300 atoms. As the push continues to make devices even smaller, researchers must account for quantum mechanical effects in the device behavior. With fewer and fewer atoms, the positions of impurities and other irregularities begin to matter, and device reliability becomes an issue. So rather than shrink existing devices, many researchers are working on entirely new devices, based on carbon nanotubes, spintronics, molecular conduction, and other nanotechnologies.

Learn more about transistors from the many resources on this site, listed below. Use our simulation tools to simulate performance characteristics for your own devices.

Resources (121-140 of 298)

  1. ECE 606 Lecture 22: Non-ideal Effects

    11 Mar 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    http://nanohub.org/resources/5824

  2. ECE 606 Lecture 17: Hall Effect, Diffusion

    24 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Measurement of mobility Hall Effect for determining carrier concentration Physics of diffusion Conclusions R. F. Pierret, "Advanced Semiconductor Fundamentals", Modular Series...

    http://nanohub.org/resources/5815

  3. ECE 606 Lecture 16: Carrier Transport

    23 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    http://nanohub.org/resources/5813

  4. ECE 606 Lecture 13: Recombination-Generation

    16 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Non-equilibrium systems Recombination generation events Steady-state and transient response Derivation of R-G formula Conclusion R. F. Pierret, "Advanced Semiconductor...

    http://nanohub.org/resources/5807

  5. ECE 606 Lecture 12: Equilibrium Concentrations

    16 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Carrier concentration Temperature dependence of carrier concentration Multiple doping, co-doping, and heavy-doping Conclusion R. F. Pierret, "Advanced Semiconductor Fundamentals",...

    http://nanohub.org/resources/5805

  6. ECE 606 Lecture 11: Equilibrium Statistics

    16 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Law of mass-action & intrinsic concentration Statistics of donors and acceptor levels Conclusion R. F. Pierret, "Advanced Semiconductor Fundamentals", Modular Series on Solid...

    http://nanohub.org/resources/5803

  7. ECE 606 Lecture 10: Additional Information

    16 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Potential, field, and charge E-k diagram vs. band-diagram Basic concepts of donors and acceptors Conclusion R. F. Pierret, "Advanced Semiconductor Fundamentals", Modular Series on...

    http://nanohub.org/resources/5801

  8. ECE 606 Lecture 13a: Fermi Level Differences for Metals and Semiconductors

    16 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Short chalkboard lecture on Fermi level and band diagram differences for metals and semiconductors.

    http://nanohub.org/resources/6288

  9. ECE 606 Lecture 9: Fermi-Dirac Statistics

    04 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Rules of filling electronic states Derivation of Fermi-Dirac Statistics: three techniques Intrinsic carrier concentration Conclusion R. F. Pierret, "Advanced Semiconductor...

    http://nanohub.org/resources/5785

  10. ECE 606 Lecture 8: Density of States

    04 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Calculation of density of states Density of states for specific materials Characterization of Effective Mass Conclusions R. F. Pierret, "Advanced Semiconductor Fundamentals",...

    http://nanohub.org/resources/5784

  11. ECE 606 Lecture 7: Energy Bands in Real Crystals

    04 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: E-k diagram/constant energy surfaces in 3D solids Characterization of E-k diagram: Bandgap Characterization of E-k diagram: Effective Mass Conclusions R. F. Pierret, "Advanced...

    http://nanohub.org/resources/5782

  12. ECE 606 Lecture 5: Energy Bands

    04 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Schrodinger equation in periodic U(x) Bloch theorem Band structure Properties of electronic bands Conclusions R. F. Pierret, "Advanced Semiconductor Fundamentals", Modular Series...

    http://nanohub.org/resources/5758

  13. ECE 606 Lecture 6: Energy Bands (continued)

    04 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Properties of electronic bands E-k diagram and constant energy surfaces Conclusions R. F. Pierret, "Advanced Semiconductor Fundamentals", Modular Series on Solid State Devices,...

    http://nanohub.org/resources/5780

  14. ECE 606 Lecture 4: Solution of Schrodinger Equation

    04 Feb 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Time-independent Schrodinger Equation Analytical solution of toy problems Bound vs. tunneling states Conclusions Additional Notes: Numerical solution of Schrodinger Equation R....

    http://nanohub.org/resources/5756

  15. ECE 606 Lecture 3: Elements of Quantum Mechanics

    28 Jan 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Why do we need quantum physics Quantum concepts Formulation of quantum mechanics Conclusions R. F. Pierret, "Advanced Semiconductor Fundamentals", Modular Series on Solid State...

    http://nanohub.org/resources/5754

  16. ECE 606 Lecture 2: Geometry of Periodic Crystals

    28 Jan 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Volume & surface issues for BCC, FCC, Cubic lattices Important material systems Miller indices Conclusions Helpful software tool: Crystal Viewer in the ABACUS tool suite. R....

    http://nanohub.org/resources/5752

  17. ECE 606 Lecture 1: Introduction

    28 Jan 2009 | Online Presentations | Contributor(s): Muhammad A. Alam

    Outline: Course information Current flow in semiconductors Types of material systems Classification of crystals

    http://nanohub.org/resources/5750

  18. Illinois ECE 440 Solid State Electronic Devices, Lecture 7: Temperature Dependence of Carrier Concentrations

    30 Dec 2008 | Online Presentations | Contributor(s): Eric Pop

    University of Illinois at Urbana-Champaign ECE 440: Solid State Electronic Devices

    http://nanohub.org/resources/6090

  19. Illinois ECE 440 Solid State Electronic Devices, Lecture 6: Doping, Fermi Level, Density of States

    04 Dec 2008 | Online Presentations | Contributor(s): Eric Pop, Umair Irfan

    University of Illinois at Urbana-Champaign ECE 440: Solid State Electronic Devices

    http://nanohub.org/resources/6000

  20. Illinois ECE 440 Solid State Electronic Devices, Lecture 1 Introduction

    26 Nov 2008 | Online Presentations | Contributor(s): Eric Pop

    Introduction to Solid State Electronic Devices University of Illinois at Urbana-Champaign ECE 440: Solid State Electronic Devices

    http://nanohub.org/resources/5950

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