Tags: GaAs

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  1. Epitaxial Strategies for High Power Optically Pumped Vertical External Cavity Surface Emitting Lasers and Metamorphic Antimonide Solar Cells

    05 Dec 2016 | Online Presentations | Contributor(s): Ganesh Balakrishnan

    We present antimonide-based photovoltaic cells grown on GaAs and Silicon substrates for use as sub-cells in metamorphic multi-junction solar cells. These antimonide cells, based on GaSb, are...

    http://nanohub.org/resources/25221

  2. nanoHUB Simulation Activity - Orientations of Common Single Crystal Substrates

    07 Jun 2016 | Teaching Materials | Contributor(s): Tanya Faltens

    NEW Version 2! (10/17/16) Now includes a link to the saved set of simulations, that can be shared instantly with any nanoHUB user.  Other minor edits to update the activity and fix...

    http://nanohub.org/resources/24375

  3. ab initio Model for Mobility and Seebeck coefficient using Boltzmann Transport (aMoBT) equation

    11 Jun 2015 | Tools | Contributor(s): Alireza Faghaninia, Joel Ager (editor), Cynthia S Lo (editor)

    ab initio electronic transport model to calculate low-field electrical mobility and Seebeck coefficient of semiconductors in Boltzmann transport framework.

    http://nanohub.org/resources/amobt

  4. Exploring New Channel Materials for Nanoscale CMOS

    28 Jun 2013 | Papers | Contributor(s): Anisur Rahman

    The improved transport properties of new channel materials, such as Ge and III-V semiconductors, along with new device designs, such as dual gate, tri gate or FinFETs, are expected to enhance the...

    http://nanohub.org/resources/18738

  5. Exit code 139

    Closed | Responses: 1

    GaAs with biaxial strain, swept from -3% to +3% produces the following error: Problem launching job: Program...

    http://nanohub.org/answers/question/1217

  6. Why quantum dot simulation domain must contain multi-million atoms?

    11 Jan 2013 | Online Presentations | Contributor(s): Muhammad Usman

    The InGaAs quantum dots obtained from the self-assembly growth process are heavily strained. The long-range strain and piezoelectric fields significantly modifies the electronic structure of the...

    http://nanohub.org/resources/16192

  7. DBR Laser Simulator

    08 Sep 2012 | Tools | Contributor(s): Nikhil Sancheti, Lynford Goddard, Christopher Adam Edwards

    Describes properties of a GaAs/AlGaAs DBR laser

    http://nanohub.org/resources/dbrlaser

  8. Quantitative Modeling and Simulation of Quantum Dots

    18 Apr 2011 | Presentation Materials | Contributor(s): Muhammad Usman

    Quantum dots grown by self-assembly process are typically constructed by 50,000 to 5,000,000 structural atoms which confine a small, countable number of extra electrons or holes in a space that is...

    http://nanohub.org/resources/9332

  9. Quantum Dot Wave Function (Quantum Dot Lab)

    02 Feb 2011 | Animations | Contributor(s): Gerhard Klimeck, David S. Ebert, Wei Qiao

    Electron density of an artificial atom. The animation sequence shows various electronic states in an Indium Arsenide (InAs)/Gallium Arsenide (GaAs) self-assembled quantum dot.

    http://nanohub.org/resources/10751

  10. Self-Assembled Quantum Dot Structure (pyramid)

    02 Feb 2011 | Animations | Contributor(s): Gerhard Klimeck, Insoo Woo, Muhammad Usman, David S. Ebert

    Pyramidal InAs Quantum dot. The quantum dot is 27 atomic monolayers wide at the base and 15 atomic monolayers tall.

    http://nanohub.org/resources/10730

  11. Quantum Dot Wave Function (still image)

    31 Jan 2011 | Animations | Contributor(s): Gerhard Klimeck, David S. Ebert, Wei Qiao

    Electron density of an artificial atom. The image shown displays the excited electron state in an Indium Arsenide (InAs) / Gallium Arsenide (GaAs) self-assembled quantum dot.

    http://nanohub.org/resources/10692

  12. Self-Assembled Quantum Dot Wave Structure

    31 Jan 2011 | Animations | Contributor(s): Gerhard Klimeck, Insoo Woo, Muhammad Usman, David S. Ebert

    A 20nm wide and 5nm high dome shaped InAs quantum dot grown on GaAs and embedded in InAlAs is visualized.

    http://nanohub.org/resources/10689

  13. How extensively have nanoparticles been tested in the field of solar cells?

    Closed | Responses: 2

    I have seen research that has included silver nanoparticles placed in the wafers of Si. I’ve also seen http://nanohub.org/answers/question/685

  14. Atomistic Modeling and Simulation Tools for Nanoelectronics and their Deployment on nanoHUB.org

    16 Dec 2010 | Online Presentations | Contributor(s): Gerhard Klimeck

    At the nanometer scale the concepts of device and material meet and a new device is a new material and vice versa. While atomistic device representations are novel to device physicists, the...

    http://nanohub.org/resources/10199

  15. Is there a self-consistent schrodinger-poisson solver on nanohub?

    Closed | Responses: 0

    I’m new to nanohub, and I’m looking for a self-consistent schrodinger-poisson solver that can simulate http://nanohub.org/answers/question/619

  16. Rode's Method: Theory and Implementation

    06 Jul 2010 | Teaching Materials | Contributor(s): Dragica Vasileska

    This set of teaching materials provides theoretical description of the Rode's method for the low field mobility calculation that is accompanied with a MATLAB code for the low field mobility...

    http://nanohub.org/resources/9249

  17. Negative Differential Resistivity Exercise

    28 Jun 2010 | Teaching Materials | Contributor(s): Gerhard Klimeck, Parijat Sengupta, Dragica Vasileska

    In certain semiconductors such as GaAs and InP the average velocity as a function of field strength displays a maximum followed by a regime of decreasing velocity. Hilsum, Ridley, and Watkins...

    http://nanohub.org/resources/9238

  18. Bulk Monte Carlo: Implementation Details and Source Codes Download

    01 Jun 2010 | Teaching Materials | Contributor(s): Dragica Vasileska, Stephen M. Goodnick

    The Ensemble Monte Carlo technique has been used now for over 30 years as a numerical method to simulate nonequilibrium transport in semiconductor materials and devices, and has been the subject...

    http://nanohub.org/resources/9109

  19. Electronic band structure

    12 Apr 2010 | Animations | Contributor(s): Saumitra Raj Mehrotra, Gerhard Klimeck

    In solid-state physics, the electronic band structure (or simply band structure) of a solid describes ranges of energy in which an electron is "forbidden" or "allowed". The band structure is...

    http://nanohub.org/resources/8814

  20. Antal Ürmös

    http://nanohub.org/members/37332