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: metal-insulator transition and optical properties

About My Work

I study the electronic and optical properties of nanocrystal (NC) networks under the supervision of Uwe Kortshagen in the ME department, collaborating closely with Boris Shklovskii.

First, I study the metal-insulator transitions (MIT) in NC networks. We individually tune the inter-NC contact area and the electron density by flashing the films with a high powered xenon lamp, allowing us to optimize the electronic properties of NC films. By first maximizing the NC facet size, we are then able to tune the elctron density, observing the NC network across the metal-insulator transition.

In addition, I study inter-particle exciton dynamics in NCs using time resolved emission spectroscopy. I am currently at Los Alamos National Lab for the 2018 calendar year on a DoE Fellowship, doing ultrafast spectroscopy in Victor Klimov's group. This work focuses on exciton transport in Si nanocrystals, as well as fundamental optical studies of CdSe nanoplatelets.

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), pp 4634-4642


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