Sean Shaheen

Sean Shaheen

Professor, ECEE Department • Professor by Courtesy, Department of Physics • Faculty of the Materials Science & Engineering Program • Fellow, Renewable and Sustainable Energy Institute (RASEI) • Joint Appointee, National Renewable Energy Laboratory (NREL) • Editor-in-Chief, Journal of Photonics for Energy

Visiting Faculty


Steffanie Peterson

Associate Professor
Physics & Astronomy • Community College of Denver
Professor Peterson is working in the group as a participant in the ARETe Scholars Program in summer 2021. Her research focuses on numerical modeling and optimization of perovskite photovoltaic modules and translation of related concepts to the curriculum at the Community College of Denver.

Graduate Research Associates


Spencer Hall

Ph.D. Student, Physics
Spencer recently graduated with a B.S. in Physics from CU Boulder. He will be continuing on as a Ph.D. student in Fall 2021. His research interests are focused on modeling and experiment of carrier dynamics in perovskite thin films and photovoltaics.
Vesta Zhelyaskova

Vesta Zhelyaskova

Ph.D. Student, Electrical Engineering
Vesta Zhelyaskova is a Ph.D. student and NSF Graduate Research Fellowship Program awardee in the ECEE department. She has studied the growth and chemical doping of organic thin films for superconductivity and is currenlty working on perovskite photovoltaic materials and devices. She previously received her B.S. in physics from the University of Florida.

Research Associates

Jake Perez

Jake Perez

M.S. Electrical Engineering, 2020
Jake works on several projects, including computational simulations of perovskite photovoltaic modules, with the goal of optimizing the circuit layout of the module for power efficiency and resilience, and on neuromorphic circuit desings for reserovoir computing.
Stark image

Michael Stark

B.S. Physics, 2021
Michael recently graduated with his B.S. in Physics. He has a passion for physical chemistry and innovations in photonics. He is working on materials and characterization for photon upconversion via the mechanism of cooperative energy pooling (CEP).

Visiting Students


Dawson Hewatt

B.S. Student, Physics, University of Denver
Department of Physics & Astronomy • University of Denver
Dawson is a rising senior in the B.S. program in Physics at the University of Denver, working in the group of Prof. Mark Siemens . He is working in Boulder on a collaborative project aimed at understanding carrier dynamics and thermalization in perovskite photovoltaics.

Former Group Members