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Effect on Electrode Work Function by Changing Molecular Geometry of Conjugated Polymer Electrolytes and Application for Hole Transporting Layer of Organic Optoelectronic Devices

Title
Effect on Electrode Work Function by Changing Molecular Geometry of Conjugated Polymer Electrolytes and Application for Hole Transporting Layer of Organic Optoelectronic Devices
Authors
Lee, Eui JinChoi, Min HeeHan, Yong WoonMoon, Doo Kyung
Issue Date
2017-12
Citation
ACS Applied Materials and Interfaces, 9(50), 44060-44069
Type
Article
Article Type
Article
Keywords
OPEN-CIRCUIT VOLTAGESOLUTION-PROCESSED INTERLAYERSOLAR-CELLSFILL FACTORHIGHLY EFFICIENTENHANCEMENTPOLYELECTROLYTEEXTRACTIONSTABILITYOXIDE
ISSN
1944-8244
Abstract
In this study, we synthesized three conjugated polymer electrolytes (CPEs) with different conjugation lengths to control their dipole moments by varying spacers. P-type CPEs (PFT-D, PFtT-D, and PFbT-D) were generated by the facile oxidation of n-type CPEs (PFT, PFtT, and PFbT) and introduced as the hole-transporting layers (HTLs) of organic solar cells (OSCs) and polymer light-emitting diodes (PLEDs). To identify the effect on electrode work function tunability by changing the molecular conformation and arrangement, we simulated density functional theory calculations of these molecules and performed ultraviolet photoelectron spectroscopy analysis for films of indium tin oxide/CPEs. Additionally, we fabricated OSCs and PLEDs using the CPEs as the HTLs. The stability and performance were enhanced in the optimized devices with PFtT-D CPE HTLs compared to those of PEDOT:PSS HTL-based devices. © 2017 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/5623
DOI
10.1021/acsami.7b11164
Publisher
AMER CHEMICAL SOC
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