Systems and methods for measuring electrical characteristics of a material using a non-destructive multi-point probe

• Main Authors: Semonin, Octavi Santiago Escala, Faifer, Vladimir N, Kayes, Brendan M, Rodriguez, Edwin J, Limpinsel, Jan Moritz
• Format: Patent
• Language: English
• Published: 13.09.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

This disclosure describes an elastic multi-contact probe that includes conductive strips each of which comprises a conductive elastomer; dielectric strips formed on a back surface of a respective conductive strip; and a layer of a thermoplastic formed on back surfaces of the dielectric strips. The disclosure also describes a method that includes measuring a first I-V curve between a pair of inner probes of the an elastic multi-contact probe based on a first current applied to a pair of outer probes; determining a first slope of a linear region of the first I-V curve; measuring a second I-V curve between the pair of inner probes based on a second current applied to the pair of inner probes; determining a second slope of a linear region of the second I-V curve; and calculating a sheet resistance and a contact resistivity of the semiconductor material based on the first and second slopes.