Lithium-Doping Inverts the Nanoscale Electric Field at the Grain Boundaries in Cu2ZnSn(S,Se)4 and Increases Photovoltaic Efficiency

Phys. Chem. Chem. Phys., 2015, Accepted Manuscript
DOI: 10.1039/C5CP04707B, Paper

Hao Xin, Sarah M Vorpahl, Andrew D. Collord, Ian L. Braly, Alexander R. Uhl, Benjamin W. Krueger, David S. Ginger, Hugh Hillhouse
Passive grain boundaries (GBs) are essential for polycrystalline solar cells to reach high efficiency. However, the GBs in Cu₂ZnSn(S,Se)₄ have less favorable defect chemistry compared to CuInGaSe₂. Here, using scanning...
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