Synthesis of Fluorene-Based Semiconducting Copolymers for Organic Solar Cells
- Authors
- Oh, Jong Hoe; Kim, Ji-Hoon; Kim, Yun Tae; Shin, Won Suk; Yoon, Sung Cheol; Moon, Sang-Jin; Lee, Changjin; Kang, In-Nam; Hwang, Do-Hoon
- Issue Date
- May-2012
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Fluorene; Semiconducting Copolymers; Organic Solar Cells
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.12, no.5, pp 4132 - 4136
- Pages
- 5
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 12
- Number
- 5
- Start Page
- 4132
- End Page
- 4136
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/28146
- DOI
- 10.1166/jnn.2012.5920
- ISSN
- 1533-4880
1533-4899
- Abstract
- Semiconducting polymers composed of 2,2'-(9,9-dioctyl-9H-fluorene-2,7-diyl)dithiophenes (F8T2s) and (2E,2'E)-3,3'-(2,5-bis(octyloxy)-1,4-phenylene) bis(2-(5-bromothiophene-2-yl)acrylonitrile)s (OPTANs) have been synthesized through Pd(0)-catalyzed Suzuki coupling polymerization by controlling the monomer ratio. The synthesized polymers were confirmed to exhibit good solubility in common solvents, simple processability, and thermal stability up to 350 degrees C. The highest occupied molecular orbitals (HOMOs), lowest unoccupied molecular orbitals (LUMOs), and optical band-gap energies were determined using cyclic voltammetry (CV) and UV-visible spectrometry. The synthesized polymers showed their maximum absorption and edge at around 520 and 650 nm, respectively. The optical band-gap energies of the polymers were determined to be 1.89 eV. Bulk heterojunction organic solar cells were fabricated using the conjugated polymer as the electron donor, and 6,6-phenyl C-61-butyric acid methylester (PC61 BM) or 6,6-phenyl C-71-butyric acid methylester (PC71 BM) as the electron acceptor. The power conversion efficiencies (PCEs) of the solar cells based on polymer:PC71 BM (1:1) and polymer:PC71 BM (1:2) were 0.68% and 1.22%, respectively, under air mass 1.5 global (AM 1.5 G) illumination at 100 mW/cm(2).
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - ETC > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.