Publications associated with Semiconductor Materials, Devices & Nanostructures

Terahertz Spectroscopy Study of Weak Base-Treated Conducting Polymer Films and Applications for Polymer Solar Cells

IEEE Journal of Selected Topics in Quantum Electronics 23 (2017)

J Seo, S Nam, S Park, C Lee, J Park, H Kim, Y Kim

© 2017 IEEE. Terahertz spectroscopy was employed to investigate the charge carrier dynamics of aniline-treated poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films. The measured charge carrier lifetime was correlated with the performances of organic solar cells with the aniline-treated PEDOT:PSS hole-collecting layers. The result showed that the charge carrier lifetime was sensitive to the aniline content. The longest charge carrier lifetime was achieved for 1.2 mol.% aniline, which led to the highest power conversion efficiency of 8.83%. In particular, the trend of the charge carrier lifetime was found to be strongly affected by the surface morphology of the aniline-treated PEDOT:PSS layers.

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