2014 Graduate Fellows / Graduate Fellows

Ian Braly

Graduate Student, Chemical Engineering

Resurrection of the Cuprous Sulfide Solar Cell via a Novel Device Architecture and Acceptor Compensation

Hybrid perovskite (HP) based solar cells have increased in efficiency faster than any other technology in the history of solar cells. The best HPs contain 6 elements (C, H, N, Pb, I, and Cl). The space of possible composition variations and substitutions is extraordinarily large, and it would be an incredibly arduous task if one was required to make a full solar cell in order to test a different composition. In our exploratory work, we are employing combinatorial methods and a unique photoluminescence tool developed by our group in order to effectively explore HP ink compositions and probe their optoelectronic quality. We have already observed systematic changes in key optoelectronic properties such as the quasi-Fermi level splitting with respect to material composition. We are now poised to rapidly discover superior HP ink formulations for applications in both tandem and single junction solar cells.

“Providing clean energy to the inhabitants of our planet is a major challenge to future generations. The University of Washington is to be congratulated for establishing an Institute where faculty and students can work together to tackle the difficult global challenge of energy sustainability.”
– Mildred Dresselhaus, Professor of Physics and Electrical Engineering, Emerita and Institute Professor, Massachusetts Institute of Technology
“Energy competition is opening up in a variety of ways, the push for carbon control will continue, and the rate of technology advancement is exponential. All the things I’ve seen at the CEI are just perfect for the way we see things going in energy. You guys are at the cutting edge. We’re counting on you.”
– Ronald Litzinger, President, Edison Energy
Since its founding the Clean Energy Institute has contributed more than $1.1 million toward the education of 66 STEM scholars and recruitment of 12 students through our fellowship programs.