Solution-processed zinc oxide/polyethylenimine nanocomposites as tunable electron transport layers for highly efficient bulk heterojunction polymer solar cells.

@article{Chen2015SolutionprocessedZO,
  title={Solution-processed zinc oxide/polyethylenimine nanocomposites as tunable electron transport layers for highly efficient bulk heterojunction polymer solar cells.},
  author={Hsiu-Cheng Chen and S. R. Lin and Jian-ming Jiang and Yu-Wei Su and Kung-Hwa Wei},
  journal={ACS applied materials & interfaces},
  year={2015},
  volume={7 11},
  pages={6273-81}
}
In this study, we employed polyethylenimine-doped sol-gel-processed zinc oxide composites (ZnO:PEI) as efficient electron transport layers (ETL) for facilitating electron extraction in inverted polymer solar cells. Using ultraviolet photoelectron spectroscopy, synchrotron grazing-incidence small-angle X-ray scattering and transmission electron microscopy, we observed that ZnO:PEI composite films' energy bands could be tuned considerably by varying the content of PEI up to 7 wt %-the conduction… CONTINUE READING
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