Electrostatically Self-Assembled Nonconjugated Polyelectrolytes as an Ideal Interfacial Layer for Inverted Polymer Solar Cells

Nonconjugated polyelectrolytes (NPEs) are ideal interfacial layers for high‐efficiency inverted polymer solar cells (I‐PSCs). The NPEs are coated on indium tin oxide (ITO) using ionic self‐assembly. Due to dipole formation between the cationic amine of the NPE and the anionic oxygen of ITO, the work...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2012-06, Vol.24 (22), p.3005-3009
Main Authors: Kang, Hongkyu, Hong, Soonil, Lee, Jongjin, Lee, Kwanghee
Format: Article
Language:English
Subjects:
Electric Power Supplies
Electrodes
Electrolytes - chemistry
interfacial materials
inverted solar cells
nonconjugated polyelectrolytes
polymer solar cells
Polymers - chemistry
self-assembly
Solar Energy
Static Electricity
Tin Compounds - chemistry
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Summary:Nonconjugated polyelectrolytes (NPEs) are ideal interfacial layers for high‐efficiency inverted polymer solar cells (I‐PSCs). The NPEs are coated on indium tin oxide (ITO) using ionic self‐assembly. Due to dipole formation between the cationic amine of the NPE and the anionic oxygen of ITO, the work function of ITO is dramatically reduced from 4.8 to 4.0 eV. Using the modified ITO, UV‐independent I‐PSCs with high efficiencies of 6.3% are demonstrated.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201200594