公开(公告)号：US11525847B2

公开(公告)日：2022-12-13

申请号：US17484939

申请日：2021-09-24

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Matthew Grayson ,  Chulin Wang ,  Juncen Li ,  William H. Reinhardt

IPC: G01R19/00 ,  G01R33/07 ,  H01L35/28

Abstract: Systems and methods include an electrical switch that establishes a first electrical conducting path between terminals of an electrical measurement apparatus through one or more electrical leads and an electrically-conductive sample in a first state, and a second electrical conducting path between the terminals through the one or more electrical leads while bypassing the sample in a second state. A voltage VS+L is measured across all of the sample and the one or more electrical leads in the first state, while a voltage VL is measured across the one or more electrical leads while bypassing the sample in the second state. Calculations according to the equation VS=VS+L−VL are performed to determine a precision DC voltage measurement of a voltage across the sample VS in the absence of Seebeck voltage offsets contributed by the one or more electrical leads.

公开(公告)号：US20220099711A1

公开(公告)日：2022-03-31

申请号：US17484939

申请日：2021-09-24

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Matthew Grayson ,  Chulin Wang ,  Juncen Li ,  William H. Reinhardt

IPC: G01R19/00 ,  H01L35/28 ,  G01R33/07

Abstract: Systems and methods include an electrical switch that establishes a first electrical conducting path between terminals of an electrical measurement apparatus through one or more electrical leads and an electrically-conductive sample in a first state, and a second electrical conducting path between the terminals through the one or more electrical leads while bypassing the sample in a second state. A voltage VS+L is measured across all of the sample and the one or more electrical leads in the first state, while a voltage VL is measured across the one or more electrical leads while bypassing the sample in the second state. Calculations according to the equation VS=VS+L−VL are performed to determine a precision DC voltage measurement of a voltage across the sample VS in the absence of Seebeck voltage offsets contributed by the one or more electrical leads.