Alexander U. Adler
In the lab
My research focused on the electrical properties of indium gallium zinc oxide (IGZO) and how those properties depend on defects within the material. Although the material is already being used in prototypical applications as amorphous thin films, little is known about the defect mechanisms that give rise to its conductivity and carrier content. Defect characterization is generally conducted on (poly)crystalline materials; but, this knowledge can be applied to better understand the electrical properties of the amorphous phase.
While my research involves an experimental determination of the defects at play, collaboration with theory is a necessity to solidify our hypotheses.
Grants, Presentations, and Publications
S. Moffitt, A. Adler, T. Gennett, D. Ginley, J. Perkins, T. Mason, Confirmation of the dominant defect mechanism in amorphous In-Zn-O through the application of in situ Brouwer analysis. Journal of the American Ceramic Society, In Press.
A. U. Adler, Defect Analysis of the In–Ga–Zn–O System for Transparent Oxide Semiconductor Applications. Ph.D. Thesis, Northwestern University, Evanston, IL, June 2013. [link]
A. U. Adler, T. C. Yeh, A. Murat, J. E. Medvedeva, & T. O. Mason, Bridging the Gap: Defect studies in crystalline and amorphous InGaZnO. Hilliard Symposium, Northwestern University, Evanston, IL, May 2013. (Poster)
A. U. Adler, T. C. Yeh, D. Bruce Buchholz, R. P. H. Chang, & T. O. Mason, Quasi-reversible point defect relaxation in amorphous In-Ga-Zn-O thin films by in situ electrical measurements. Applied Physics Letters, 102(12), 122103, (2013).
J. Luo, A. U. Adler, T. O. Mason, D. Bruce Buchholz, R. P. H. Chang, & M. Grayson, Transient photoresponse in amorphous In-Ga-Zn-O thin films under stretched exponential analysis. Journal of Applied Physics, 113(15), 153709, (2013).
A. U. Adler & M. L. Paulsen, Improving Science Communication with Theater, Storytelling, and Visuals. ITSP Conference at AAAS Boston, February 2013. (Invited Poster)
A. Murat, A. U. Adler, T. O. Mason, J. E. Medvedeva, Carrier generation in multicomponent wide-bandgap oxides: InGaZnO4, Journal of the American Chemical Society, 135(15), 5685–92, (2013).
A. U. Adler, B. W. Meredig, E. Gerber, M. L. Paulsen, Ready, Set, Go: A Crash Course in Effective Communication for Emerging Professionals, Professional Building Grant: Northwestern TGS, September 2011.
A. U. Adler, E. M. Hopper, H. Peng, J.-H. Song, J. E. Medvedeva, A. J. Freeman, T. O. Mason, Defect Mechanisms in the In-Ga-Zn-O and In-Zn-O Homologous Phases, Materials Science and Technology Conference and Exhibition, Columbus, OH, October 2011. (Presentation)
A. U. Adler, E. M. Hopper, T. O. Mason, Defect Mechanisms in the In-Ga-Zn-O and In-Zn-O Homologous Phases, Materials Science and Technology Conference and Exhibition, Houston, TX, October 2010. (Poster)
S. P. Harvey, A. U. Adler, K. R. Poeppelmeier, T. O. Mason, Subsolidus Phase Equilibria in the Zn-In-Sn-O and In-Ga-Zn-O Systems, Materials Science and Technology Conference and Exhibition, Pittsburgh, PA, October 2008. (Presentation)
T. A. Vanderah, M. W. Lufaso, A. U. Adler, I. Levin, J. C. Nino, V. Provenzano, P. K. Schenck, Subsolidus phase equilibria and properties in the system Bi2O3:Mn2O3±x:Nb2O5. Journal of Solid State Chemistry, 2006, 179, 3467-3477 (2006).