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Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab (ATOMS)
Research Interests
  • Optoelectronic materials synthesis/organic electronics, functionalization of carbonaceous solids, advanced materials chemistry, macromolecular chemistry

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A low boiling-point and low-cost fluorinated additive improves the efficiency and stability of organic solar cells

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Title
A low boiling-point and low-cost fluorinated additive improves the efficiency and stability of organic solar cells
Author
Li, ShamanMa, QingChen, ShanshanMeng, LeiZhang, JinyuanZhang, ZhanjunYang, ChangdukLi, Yongfang
Issue Date
2020-11
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY C, v.8, no.43, pp.15296 - 15302
Abstract
The application of high-performance organic solar cells (OSCs) requires high efficiency, high stability and low-cost devices. Herein, we propose a low boiling-point and low-cost additive 1,4-difluorobenzene (DFB) with a boiling point of 88.8 degrees C to optimize the morphology of the active layer of the OSCs based on conjugated polymer J71 as a donor and n-type small molecule m-ITTC as an acceptor. The DFB additive treatment enhances intermolecular pi-pi stacking of the photovoltaic materials, which is conducive to charge carrier separation and transport. The power conversion efficiency (PCE) of the OSCs based on J71:m-ITTC with the DFB additive treatment increased to 12.38% from 11.01% for the device without the additive treatment. Furthermore, the OSCs with the additive treatment also showed higher stability. The results indicate that 1,4-difluorobenzene will be a promising low cost additive for commercial application of OSCs.
URI
https://scholarworks.unist.ac.kr/handle/201301/48826
URL
https://pubs.rsc.org/en/content/articlelanding/2020/TC/D0TC03217D#!divAbstract
DOI
10.1039/d0tc03217d
ISSN
2050-7526
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