Enhanced mobility CsPbI 3 quantum dot arrays for record-efficiency, high-voltage photovoltaic cells

Authors: Erin M. Sanehira, Ashley R. Marshall, Jeffrey A. Christians, Steven P. Harvey, Peter N. Ciesielski, Lance M. Wheeler, Philip Schulz, Lih Y. Lin, Matthew C. Beard, Joseph M. Luther - Science Advances 2017 cited by 961

deficit. We show that charge carrier mobility within perovskite QD films is dictated by the chemical conditions at the QD-QD junctions. The AX treatments provide a method for tuning the coupling between perovskite QDs, which is exploited for improved charge transport for fabricating high-quality QD films and devices. The AX treatments presented here double the film mobility, enabling increased photocurrent, and lead to a record certified QD solar cell efficiency of 13.43%.