Reducing the Exciton Binding Energy of Donor–Acceptor‐Based Conjugated Polymers to Promote Charge‐Induced Reactions

2019 ◽  
Vol 58 (30) ◽  
pp. 10236-10240 ◽  
Author(s):  
Zhi‐An Lan ◽  
Guigang Zhang ◽  
Xiong Chen ◽  
Yongfan Zhang ◽  
Kai A. I. Zhang ◽  
...  
Keyword(s):  
Binding Energy ◽  
Conjugated Polymers ◽  
Exciton Binding Energy ◽  
Donor Acceptor

Reducing the Exciton Binding Energy of Donor–Acceptor‐Based Conjugated Polymers to Promote Charge‐Induced Reactions

2019 ◽  
Vol 131 (30) ◽  
pp. 10342-10346 ◽  
Author(s):  
Zhi‐An Lan ◽  
Guigang Zhang ◽  
Xiong Chen ◽  
Yongfan Zhang ◽  
Kai A. I. Zhang ◽  
...  
Keyword(s):  
Binding Energy ◽  
Conjugated Polymers ◽  
Exciton Binding Energy ◽  
Donor Acceptor

Tunable exciton binding energy in 2D hybrid layered perovskites through donor–acceptor interactions within the organic layer

2020 ◽  
Vol 12 (8) ◽  
pp. 672-682 ◽  
Author(s):  
James V. Passarelli ◽  
Catherine M. Mauck ◽  
Samuel W. Winslow ◽  
Collin F. Perkinson ◽  
Jacob C. Bard ◽  
...  
Keyword(s):  
Binding Energy ◽  
Exciton Binding Energy ◽  
Organic Layer ◽  
Donor Acceptor ◽  
Layered Perovskites

Models of Electron-Hole Screening and Exciton Binding in Conjugated Polymers

1995 ◽  
Vol 413 ◽  
Author(s):  
David Yaron ◽  
Eric Moore ◽  
Benjamin Gherman
Keyword(s):  
Binding Energy ◽  
Conjugated Polymers ◽  
Point Charge ◽  
Solvation Energy ◽  
Exciton Binding Energy ◽  
Electron Interaction ◽  
Electron Hole ◽  
Relative Time ◽  
Hartree Fock ◽  
Semi Empirical

ABSTRACTThe use of semi-empirical quantum chemistry to calculate the exciton binding energy of conjugated polymers is discussed. Both the Pariser-Parr-Pople (PPP) model with Ohno parameterization and the models present in the MOPAC program overestimate the exciton binding energy relative to that observed in solid-state materials. Inclusion of Coulomb screening from adjacent chains may correct this overestimation. The solvation energy of a point charge in polyacetylene is calculated as 0.9eV, using Hartree-Fock theory to describe the polarization induced in the solvent chains. It is argued that including screening by modifying the electron-electron interaction energy of the PPP model introduces physically unreasonable side effects and is not consistent with the 0.9eV solvation energy of a point charge. Electron-hole screening models are then discussed along with the need to consider the relative time scales of the electron-hole motion and the dielectric response.

Influence of alkoxy substituents on the exciton binding energy of conjugated polymers

2000 ◽  
Vol 111-112 ◽  
pp. 527-530 ◽  
Author(s):  
L Rossi ◽  
S.F Alvarado ◽  
W Rieß ◽  
S Schrader ◽  
D.G Lidzey ◽  
...  
Keyword(s):  
Binding Energy ◽  
Conjugated Polymers ◽  
Exciton Binding Energy

The exciton binding energy in luminescent conjugated polymers

1996 ◽  
Vol 8 (5) ◽  
pp. 447-452 ◽  
Author(s):  
Jean-Luc Brédas ◽  
Jérôme Cornil ◽  
Alan J. Heeger
Keyword(s):  
Binding Energy ◽  
Conjugated Polymers ◽  
Exciton Binding Energy

scholarly journals Influence of Backbone Curvature on the Organic Electrochemical Transistor Performance of Glycolated Donor‐Acceptor Conjugated Polymers

2021 ◽  
Author(s):  
Bowen Ding ◽  
Gunwoo Kim ◽  
Youngseok Kim ◽  
Flurin D. Eisner ◽  
Edgar Gutiérrez-Fernández ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Electrochemical Transistor ◽  
Donor Acceptor

scholarly journals Backbone Effects on the Thermoelectric Properties of Ultra-Small Bandgap Conjugated Polymers

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2486
Author(s):  
Dexun Xie ◽  
Jing Xiao ◽  
Quanwei Li ◽  
Tongchao Liu ◽  
Jinjia Xu ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Power Factor ◽  
Carrier Mobility ◽  
Polymeric Materials ◽  
Thermoelectric Performance ◽  
Organic Thermoelectric Materials ◽  
Higher Power ◽  
Donor Acceptor ◽  
Maximum Power Factor ◽  
Higher Carrier Mobility

Conjugated polymers with narrower bandgaps usually induce higher carrier mobility, which is vital for the improved thermoelectric performance of polymeric materials. Herein, two indacenodithiophene (IDT) based donor–acceptor (D-A) conjugated polymers (PIDT-BBT and PIDTT-BBT) were designed and synthesized, both of which exhibited low-bandgaps. PIDTT-BBT showed a more planar backbone and carrier mobility that was two orders of magnitude higher (2.74 × 10−2 cm2V−1s−1) than that of PIDT-BBT (4.52 × 10−4 cm2V−1s−1). Both exhibited excellent thermoelectric performance after doping with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane, where PIDTT-BBT exhibited a larger conductivity (0.181 S cm−1) and a higher power factor (1.861 μW m−1 K−2) due to its higher carrier mobility. The maximum power factor of PIDTT-BBT reached 4.04 μW m−1 K−2 at 382 K. It is believed that conjugated polymers with a low bandgap are promising in the field of organic thermoelectric materials.

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