Electron acceptor materials engineering in colloidal quantum dot solar cells.

Liu, Huan; Tang, Jiang; Kramer, Illan J; Debnath, Ratan; Koleilat, Ghada I; Wang, Xihua; Fisher, Armin; Li, Rui et al. · Adv Mater · 2011

basic_science · Level V

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Abstract

Lead sulfide colloidal quantum dot (CQD) solar cells with a solar power conversion efficiency of 5.6% are reported. The result is achieved through careful optimization of the titanium dioxide electrode that serves as the electron acceptor. Metal-ion-doped sol-gel-derived titanium dioxide electrodes produce a tunable-bandedge, well-passivated materials platform for CQD solar cell optimization.