University of Minnesota
School of Physics & Astronomy
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Zachary Robinson

TATEH 201-05 (office)
MECHE L122 (lab)
robi0835 @

Summary of Interests
Charge and energy transport in nanocrystal films: insulator-metal transition and exciton dynamics

About My Work

I study charge and energy transport in nanocrystal (NC) films under the supervision of Uwe Kortshagen in the ME department, with close collaboration with Boris Shklovskii. Specifically, I study insulator metal transitions (IMT) in ZnO NC networks, where we have observed the first known IMT in NC film. We individually tune the inter-NC contact area and the electron density by flashing the films with a high powered xenon lamp. In addition, I study exciton dynamics in Si NCs using time resolved emission spectroscopy. An understanding of the diffusion characteristics of excitons in Si NCs will lead to more efficient devices in the future.

Selected Publications

Corey M. Staller, Zachary L. Robinson, Ankit Agrawal, Stephen L. Gibbs, Benjamin L. Greenberg, Sebastien D. Lounis, Uwe R. Kortshagen, Delia J. Milliron, Tuning Nanocrystal Surface Depletion by Controlling Dopant Distribution as a Route Toward Enhanced Film Conductivity, Nano Letters 2018, 18 (5), pp 2870–2878

Benjamin L. Greenberg, Zachary L. Robinson, K. V. Reich, Claudia Gorynski, Bryan N. Voigt, Lorraine F. Francis, B. I. Shklovskii, Eray S. Aydil, Uwe R. Kortshagen, ZnO Nanocrystal Networks Near the Insulator–Metal Transition: Tuning Contact Radius and Electron Density with Intense Pulsed Light, Nano Letters 2017, 17 (8), 4634-4642


B.S. Physics & Mathematics, Colorado State University 2014