Determining Resistivity, Hall Coefficient, and Mobility ASTM F76

Determining Resistivity, Hall Coefficient, and Mobility ASTM F76

The standard test method ASTM F76 includes two ways for assessing the resistivity and Hall coefficient of single-crystal semiconductor specimens. The test specimen requirements are the most significant difference between these test techniques. The standard will be the values expressed in accepted metric units.

    Scope:

    The ASTM F76 standard test procedure is employed to determine resistivity, Hall coefficient, and Hall mobility. It helps figure out the best material for making semiconductor devices. ASTM F76 can infer other characteristics for materials specification under certain conditions, as specified in the Appendix, such as charge carrier density and drift mobility.

    Procedure:

    Test methodSection
    Test method A6-11
    Test method B12-17

    Specimen size

    The thickness must be homogeneous to within 1% of the total thickness and not exceed 0.10 cm. The specimen’s entire length should be between 1.0 and 1.5 cm.

    Data:

    ρ = 1/eμn

    RH = r/nq

    μH = rμ

    where ρ is resistivity, μH Hall mobility, and RH is Hall coefficient.

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