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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
- Effect on Electrode Work Function by Changing Molecular Geometry of Conjugated Polymer Electrolytes and Application for Hole Transporting Layer of Organic Optoelectronic Devices
- Lee, Eui Jin; Choi, Min Hee; Han, Yong Woon; Moon, Doo Kyung
- Issue Date
- ACS Applied Materials and Interfaces, 9(50), 44060-44069
- Article Type
- OPEN-CIRCUIT VOLTAGE; SOLUTION-PROCESSED INTERLAYER; SOLAR-CELLS; FILL FACTOR; HIGHLY EFFICIENT; ENHANCEMENT; POLYELECTROLYTE; EXTRACTION; STABILITY; OXIDE
- 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.
- AMER CHEMICAL SOC
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