Increasing the Photocurrent of Polymer Solar Cells Through the Incorporation of Graphene Nanobelts

Graphene nanobelts (GNBs) were produced through intercalation and exfoliation of stacked graphene platelet nanochips. The results of transmission electron microscopy and powder X-ray diffraction characterizations indicate that individual GNBs were produced. The GNBs were then used as additives in polymer solar cells. Compared with a reference solar cell, the photocurrent of the GNB-doped solar cell was increased as much as 60% at only 1 wt% loading due to the improved carrier mobility, indicating that GNB is a promising nanoadditive in optoelectronic device.