Authors: Jiang Tang,Kyle W. Kemp, Sjoerd Hoogland, Kwang S. Jeong, Huan Liu, Larissa Levina, Melissa Furukawa, Xihua Wang, Ratan Debnath, Dongkyu Cha, Kang Wei Chou, Armin Fischer, Aram Amassian, John B. Asbury & Edward H. Sargent
Reprinted by permission from Macmillan Publishers Ltd: Nature, doi:10.1038/NMAT3118, copyright 2011.
The Sargent group at the University of Toronto has reported quantum dot based solar cells with record efficiency. Their publication in Nature Materials describes a method to replace sterically bulky and insulating alkyl ligands with halide ions. This improves the electronic transport properties of the quantum dots while maintining their collodial stability. This could facilitate low-cost fabrication methods such as roll-to-roll printing.
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