Novel Characterization Methods for Anisotropic and Mixed-Conduction Materials
Technical Report,15 Jun 2015,14 Jun 2018
Northwestern University Evanston United States
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As per the motivational statement of this grant proposal, state-of-the-art electronic and optoelectronic devices require electronic materials with specialized properties that cannot be characterized with standard methods, or that must be characterized with extra precision. New materials characterization methods have been developed under the three years of support of this grant. These new characterizations led to 3 patents and 8 refereed publications including 2 PRLs, with several additional works in submission. Students graduated with support of this grant include 5 PhDs and 1 MS. Collaborations in this work included international partners Germany, Israel, and China, collaborations with industry Teledyne, AFRL Wright-Patterson, and other US universities U. Michigan, Alabama U.. The newly developed characterization methods were I. Carrier density gradient analysis method II. Fourier-domain mobility spectral analysis III. Heterodyne 4-point method for precision Hall effect IV. Anisotropic conductor characterization V. Heavy-tail transient analysis VI. Disorder scaling in non-ohmic conductivity of 2D materials and VII. Percolation model for electrical and thermal conductivity in disordered media.
- Test Facilities, Equipment and Methods