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Inverted Polymer Solar Cells with a Poly(diallyldimethylammonium chloride) as an Electron Collecting Layer

Title
Inverted Polymer Solar Cells with a Poly(diallyldimethylammonium chloride) as an Electron Collecting Layer
Authors
Kim, WH[Kim, Wook Hyun]Lee, SJ[Lee, Sang-Ju]Jeon, B[Jeon, Boram]Sung, SJ[Sung, Shi-Joon]Woo, S[Woo, Sungho]
DGIST Authors
Kim, WH[Kim, Wook Hyun]; Lee, SJ[Lee, Sang-Ju]; Jeon, B[Jeon, Boram]; Woo, S[Woo, Sungho]
Issue Date
2014-11
Citation
Science of Advanced Materials, 6(11), 2334-2337
Type
Article
Article Type
Article
Keywords
Interfacial DipoleInverted Polymer Solar CellsPDACZnO
ISSN
1947-2935
Abstract
Poly(diallyldimethylammonium chloride) (PDAC), a water-soluble polyelectrolyte, is used as the electron collecting layer (ECL) on indium tin oxide (ITO) for inverted polymer solar cells (PSCs) with poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as the active materials. PDAC is coated directly on top of the ITO using a simple solution processing. The work function (WF) of the ITO is dramatically reduced by dipole formation between the cationic amine of the PDAC and the anionic oxygen of the ITO. A reduction of the ITO WF improves the electron selectivity. As a result, the inverted PSCs with PDAC as an ECL exhibited a power conversion efficiency of 2.65% under AM1.5G illumination, which is significantly higher than that of the control inverted PSC with blank ITO (no ECL) and comparable to that of the control inverted PSC with ZnO ECL. © 2014 by American Scientific Publishers.
URI
http://hdl.handle.net/20.500.11750/3008
DOI
10.1166/sam.2014.2206
Publisher
American Scientific Publishers
Related Researcher
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Collection:
ETC1. Journal Articles


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