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  • adjective physics (Of a semiconductor) in which conduction is due to the movement of positive holes rather than electrons.


Sorry, no etymologies found.


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  • Electrons can cross from the spacious boron-silicon (or p-type) layer to the crowded n-type layer, but not the other way.

    Solar energy offers a vast supply of power, but harnessing it is a challenge 2010

  • The crystal wafer is doped with boron to make a p-type semiconductor.

    Photovoltaics 2009

  • Dope silicon with boron, which has three valence electrons, to create a p-type semiconductor.

    Photovoltaics 2009

  • The meat would be "p-type," with an excess of positively charged holes.

    The Transistor 2008

  • There, a Dr. Poganski gave a beautiful demonstration that the selenium rectifier was not a Schottky barrier, but a p-n junction between p-type selenium and n-type CdSe, a true heterojunction - although that term did not exist yet.

    Herbert Kroemer - Autobiography 2001

  • · When a p-type material is placed In contact with an e-type rnaterial, an electric field forms at the junction.

    Chapter 11 1994

  • Thyristors general backward blocking backward conducting n-type gate, controlled at anode side p-type gate, controlled at cathode side

    1. Selected Graphical Symbols of Electrotechnology Klaus Janoske 1991

  • In R&D, we are also developing new technologies, and have put a roadmap and a new process in place to reach 30% of solar cell efficiency utilizing a p-type wafer through innovative process and the device structure research.

    unknown title 2011

  • The junctions between n- and p-type silicon act like valves, stopping current flowing in the wrong direction.

    The Economist: Daily news and views 2011

  • The junctions in a transistor are between bits of silicon doped to conduct electrons known as n-type material, because electrons are negatively charged, and p-type areas doped to conduct positively charged holes in the crystal lattice, which are places where electrons should be, but aren't.

    The Economist: Daily news and views 2011


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