1 / 46

Semiconductor Device Principles & Invention Guide

Discover semiconductor device fundamentals & learn to create your own devices by exploring new physical processes, including PN Junction, MOS, and more. This book not only helps you understand existing devices, but also teaches you how to invent your own. Explore concepts like Fermi level, contacts, and built-in electric fields to enhance your knowledge in semiconductor technology. Detailed examples of intrinsic and doped semiconductors, along with explanations on Fermi energy and different types of contacts, provide a comprehensive understanding of semiconductor devices. Dive into key topics like PN junctions, MOS (MIS) structures, and their biasing effects. Explore components like CCD, solar cells, and tunneling mechanisms to broaden your knowledge. For more insights on modulators, EMLs, LEDs, and LDs, keep exploring the world of semiconductor devices with this essential guide.

cisco
Télécharger la présentation

Semiconductor Device Principles & Invention Guide

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Semiconductor Devices-- not only to understand what were invented, but also be able create your own -- Kai Shum 2011-12-02

  2. How? • Books tell you how to understand the operation principles for devices already invented • Not only understanding • But also to teach you how to invent your own devices by exploring new physical processes in semiconductors

  3. Summary for invented devices

  4. Basic device units • PN Junction • MOS (or MIS)

  5. A few basic concepts • Fermi level • Contacts • Build-in electric field

  6. Fermi level • Fermi level is a reference potential energy level that detects the single particle electron occupation probability in a semiconductor or dissimilar semiconductors in physical contact at equilibrium (e obey Fermi-D distribution) • Example, at the exact Fermi energy level, the probability for an electron to occupy at this energy level is 50%

  7. Example 1: Intrinsic Semiconductor at 0 K

  8. Example 2: Intrinsic Semiconductor at 300 K - - - - + + + +

  9. Example 1: Doped Semiconductors N-type P-type

  10. Example 1: Doped Semiconductors P-type N-type

  11. Fermi-Energy • The Fermi energy is a concept in quantum mechanics usually referring to the energy of the highest occupied quantum state in a system of fermions at absolute zerotemperature. See a nice description on Wiki: http://en.wikipedia.org/wiki/Fermi_energy

  12. Contacts • Contacts are terminals used to accept external potentials and to a complete circuit

  13. Different type of contacts • ohmic contact • Schottky contact

  14. Schottky contact

  15. Schottky contact

  16. Ohmic contact

  17. Biased contacts

  18. Tunneling ohm contact

  19. Schottky contact

  20. PN Junction

  21. Pn junction, 0, +, and - biased

  22. Majority carriers in pn junction

  23. I-V curve of pn diode

  24. MOS (or MIS)

  25. MOS, negatively biased

  26. MOS positively biased

  27. MOSFET action

  28. CCD

  29. -

  30. Fast color CCD

  31. CCD Inventor

  32. Solar cells

  33. Intra-band & inter-band tunneling

  34. Resonant tunneling

  35. To be continued on modulators, EMLs, LEDs, LDs

More Related