Synthesis and characterization of a wide‐bandgap polymer based on perfluorinated and alkylthiolated benzodithiophene with a deep highest occupied molecular orbital level for organic photovoltaics

2020 ◽  
Vol 58 (19) ◽  
pp. 2755-2763 ◽  
Author(s):  
Hyobin Ham ◽  
Hee su Kim ◽  
Do‐Hoon Hwang ◽  
In‐Nam Kang
Keyword(s):  
Molecular Orbital ◽  
Organic Photovoltaics ◽  
Wide Bandgap ◽  
Synthesis And Characterization ◽  
Highest Occupied Molecular Orbital ◽  
Wide Bandgap Polymer

scholarly journals Preparation and Characterization of Quinoxaline-Pyrene-Based Conjugated Copolymers for Organic Photovoltaic Devices

Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1098
Author(s):  
Bakhet A. Alqurashy ◽  
Bader M. Altayeb ◽  
Sulaiman Y. Alfaifi ◽  
Majed Alawad ◽  
Ahmed Iraqi ◽  
...  
Keyword(s):  
Molecular Orbital ◽  
Powder Diffraction ◽  
Bulk Heterojunction ◽  
Gel Permeation Chromatography ◽  
Band Gap Energy ◽  
Slight Reduction ◽  
X Ray ◽  
Highest Occupied Molecular Orbital ◽  
Lowest Unoccupied Molecular Orbital

In this study, two novel conjugated polymers, poly(4,5,9,10-tetrakis((2-ethylhexyl)oxy]pyrene-alt-2,3-bis(3-(octyloxy)phenyl)-5,8-di(2-thienyl)-6,7-difluoroquinoxaline) (PPyQxff) and poly(4,5,9,10-tetrakis((2-ethylhexyl)oxy)pyren-alt-2,3-bis(3-(octyloxy)phenyl)-5,8-di(2-thienyl)quinoxaline) (PPyQx), consisting of quinoxaline units with and without fluorine substituents, as electron-accepting moieties and pyrene flanked with dithienyl units as electron-donating moieties were prepared via Stille polymerization reactions for use as electron donor materials in bulk heterojunction (BHJ) solar cells. PPyQxff and PPyQx were characterized by X-ray powder diffraction (XRD), gel permeation chromatography (GPC), thermogravimetric analysis (TGA), cyclic voltammetry (CV), UV−VIS absorption, and nuclear magnetic resonance (NMR) spectroscopy. PPyQxff and PPyQx revealed excellent solution processability in common organic solvents. PPyQxff and PPyQx presented decomposition temperatures above 300 °C. The inclusion of F atoms to the quinoxaline moiety made a slight reduction in the highest occupied molecular orbital (HOMO) level, relative to the unfluorinated polymer, but had no impact on the lowest unoccupied molecular orbital (LUMO) level. PPyQxff and PPyQx exhibited similar physical properties with strong and broad absorbance from 400 to 700 nm and an optical band-gap energy of 1.77 eV. The X-ray powder diffraction study indicated that PPyQxff possessed a reduced π–π stacking distance relative to PPyQx.

Design of a New Fused-Ring Electron Acceptor with Excellent Compatibility to Wide-Bandgap Polymer Donors for High-Performance Organic Photovoltaics

2018 ◽  
Vol 30 (26) ◽  
pp. 1800403 ◽  
Author(s):  
Wenrui Liu ◽  
Jianyun Zhang ◽  
Zichun Zhou ◽  
Dongyang Zhang ◽  
Yuan Zhang ◽  
...  
Keyword(s):  
Electron Acceptor ◽  
Organic Photovoltaics ◽  
High Performance ◽  
Wide Bandgap ◽  
Fused Ring ◽  
Wide Bandgap Polymer

The Influence of Chromophores on the Magnitude of Space-Charge Fields in Photorefractive Polymeric Composites

2009 ◽  
Vol 62 (12) ◽  
pp. 1655 ◽  
Author(s):  
In Kyu Moon ◽  
Do Young Kim ◽  
Nakjoong Kim
Keyword(s):  
Space Charge ◽  
Molecular Orbital ◽  
Polymeric Composites ◽  
Space Charge Field ◽  
Operating Wavelength ◽  
Highest Occupied Molecular Orbital ◽  
Charge Field ◽  
Homo Level ◽  
Nlo Chromophores

This paper reports on the characterization of three poly(N-vinylcarbazole) (PVK)-based photorefractive composites with different non-linear optical (NLO) chromophores at an operating wavelength of 632.8 nm. The strength of the photoconductivity and the magnitude of the space-charge field (E SC) in the photorefractive composites are strongly affected by the chromophore’s highest occupied molecular orbital (HOMO). The magnitude of E SC increased with the lowering of the HOMO level of the NLO chromophores in the PVK composites.

High-performance wide-bandgap copolymers based on indacenodithiophene and indacenodithieno[3,2-b]thiophene units

2017 ◽  
Vol 5 (31) ◽  
pp. 7777-7783 ◽  
Author(s):  
Yunhao Cai ◽  
Xiaolong Zhang ◽  
Xiaonan Xue ◽  
Donghui Wei ◽  
Lijun Huo ◽  
...  
Keyword(s):  
High Performance ◽  
Wide Bandgap ◽  
Synthesis And Characterization ◽  
Conjugation Length

We demonstrated the synthesis and characterization of two polymers, IDT-T1 and IDTT-T1, to investigate the effect of extending the π-conjugation length on the properties of the copolymers.

Synthesis and characterization of 2H-benzimidazole- and terthiophene-based polymer for organic photovoltaics

2011 ◽  
Vol 161 (3-4) ◽  
pp. 307-312 ◽  
Author(s):  
Suhee Song ◽  
Sung Heum Park ◽  
Youngeup Jin ◽  
Jinwoo Kim ◽  
Joo Young Shim ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Synthesis And Characterization

Synthesis and characterization of isoindigo-based polymers using CH-arylation polycondensation reactions for organic photovoltaics

2014 ◽  
Vol 52 (20) ◽  
pp. 2926-2933 ◽  
Author(s):  
Walaa Elsawy ◽  
Hongkyu Kang ◽  
Kilho Yu ◽  
Ahmed Elbarbary ◽  
Kwanghee Lee ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Synthesis And Characterization

scholarly journals Synthesis and Characterization of Two-Dimensional Conjugated Polymers Incorporating Electron-Deficient Moieties for Application in Organic Photovoltaics

Polymers ◽  
2016 ◽  
Vol 8 (11) ◽  
pp. 382 ◽  
Author(s):  
Chuen-Yo Hsiow ◽  
Han-Ying Wang ◽  
Yu-Hsiang Lin ◽  
Rathinam Raja ◽  
Syang-Peng Rwei ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Organic Photovoltaics ◽  
Synthesis And Characterization ◽  
Two Dimensional
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