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Related Concept Videos

Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

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The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
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There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
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Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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Recent advances in silicon-based passive and active optical interconnects.

Harish Subbaraman, Xiaochuan Xu, Amir Hosseini

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    |April 4, 2015
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    Summary

    Silicon photonics has advanced significantly, enabling low-cost integrated optoelectronics through CMOS fabrication. These developments in optical interconnects promise benefits for communication networks, sensing, and nonlinear systems.

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    Area of Science:

    • Photonics and Optical Engineering
    • Materials Science and Engineering
    • Electrical and Computer Engineering

    Background:

    • Silicon photonics has undergone rapid advancements in the past decade.
    • Integrated optoelectronics are crucial for modern technology.
    • Complementary technologies enhance silicon-based functionalities.

    Purpose of the Study:

    • To present notable advances in silicon-based passive and active optical interconnect components.
    • To highlight key contributions in the field of silicon photonics.
    • To discuss parallel technologies integrated with silicon photonics.

    Main Methods:

    • Review of recent developments in silicon photonics.
    • Analysis of passive and active optical interconnect components.
    • Integration strategies with complementary technologies.

    Main Results:

    • Significant progress in silicon-based passive and active optical components.
    • Demonstration of unique functionalities through hybrid systems.
    • Establishment of a cost-effective fabrication path using CMOS foundries.

    Conclusions:

    • Silicon photonics offers a viable route to low-cost integrated optoelectronics.
    • Advances will impact communication networks, sensing, and nonlinear systems.
    • Synergistic integration of technologies unlocks new capabilities.