p-Type conjugated polyelectrolytes (CPEs) are developed as organic-based work-function-modifier materials for the broad work-function (WF) tunability of various metal electrodes. Facile oxidative treatments of n-type CPEs using various oxidants produce unprecedented p-type CPEs with reversed electronic properties corresponding to n-type CPEs, resulting in fine WF tuning of adjacent metal electrodes. This change leads to substantial increases in power conversion efficiency and lifetime of organic solar cells.
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© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
- conjugated polyelectrolytes
- interfacial dipoles
- organic solar cells
- work-function tuning