Synthetic Principles Directing Charge Transport in Low-Band-Gap Dithienosilole–Benzothiadiazole Copolymers

2012 ◽  
Vol 134 (21) ◽  
pp. 8944-8957 ◽  
Author(s):  
Pierre M. Beaujuge ◽  
Hoi Nok Tsao ◽  
Michael Ryan Hansen ◽  
Chad M. Amb ◽  
Chad Risko ◽  
...  
Keyword(s):  
Charge Transport ◽  
Band Gap ◽  
Low Band Gap

scholarly journals Enabling high-mobility, ambipolar charge-transport in a DPP-benzotriazole copolymer by side-chain engineering

2015 ◽  
Vol 6 (12) ◽  
pp. 6949-6960 ◽  
Author(s):  
Mathias Gruber ◽  
Seok-Heon Jung ◽  
Sam Schott ◽  
Deepak Venkateshvaran ◽  
Auke Jisk Kronemeijer ◽  
...  
Keyword(s):  
Charge Transport ◽  
Band Gap ◽  
Monomer Unit ◽  
High Mobility ◽  
Side Chain ◽  
Low Band Gap

In this article we discuss the synthesis of four new low band-gap co-polymers based on the diketopyrrolopyrrole (DPP) and benzotriazole (BTZ) monomer unit.

Low Band Gap Thiophene−Perylene Diimide Systems with Tunable Charge Transport Properties

2011 ◽  
Vol 13 (1) ◽  
pp. 18-21 ◽  
Author(s):  
Ganapathy Balaji ◽  
Tejaswini S. Kale ◽  
Ashok Keerthi ◽  
Andrea M. Della Pelle ◽  
S. Thayumanavan ◽  
...  
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Band Gap ◽  
Perylene Diimide ◽  
Low Band Gap

Optimization of the side-chain density to improve the charge transport and photovoltaic performances of a low band gap copolymer

2012 ◽  
Vol 13 (1) ◽  
pp. 114-120 ◽  
Author(s):  
Laure Biniek ◽  
Sadiara Fall ◽  
Christos L. Chochos ◽  
Nicolas Leclerc ◽  
Patrick Lévêque ◽  
...  
Keyword(s):  
Charge Transport ◽  
Band Gap ◽  
Side Chain ◽  
Low Band Gap

Dithienopyrrole-based donor–acceptor copolymers: low band-gap materials for charge transport, photovoltaics and electrochromism

2010 ◽  
Vol 20 (1) ◽  
pp. 123-134 ◽  
Author(s):  
Xuan Zhang ◽  
Timothy T. Steckler ◽  
Raghunath R. Dasari ◽  
Shino Ohira ◽  
William J. Potscavage ◽  
...  
Keyword(s):  
Charge Transport ◽  
Band Gap ◽  
Low Band Gap ◽  
Donor Acceptor

Low band gap-conjugated polymer derivatives

2005 ◽  
Vol 155 (3) ◽  
pp. 618-622 ◽  
Author(s):  
Chun-Guey Wu ◽  
Chnug-Wei Hsieh ◽  
Ding-Chou Chen ◽  
Shinn-Jen Chang ◽  
Kuo-Yu Chen
Keyword(s):  
Band Gap ◽  
Conjugated Polymer ◽  
Low Band Gap

scholarly journals Development and Assessment of Quinoidal Index for Designing of Low Band Gap Polymers

2017 ◽  
Vol 16 (5) ◽  
pp. 123-125 ◽  
Author(s):  
Kota OTSUKI ◽  
Yoshihiro HAYASHI ◽  
Susumu KAWAUCHI
Keyword(s):  
Band Gap ◽  
Low Band Gap ◽  
Low Band Gap Polymers

scholarly journals Vacuum-Free and Highly Dense Nanoparticle Based Low-Band-Gap CuInSe2 Thin-Films Manufactured by Face-to-Face Annealing with Application of Uniaxial Mechanical Pressure

Coatings ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 484
Author(s):  
Matthias Schuster ◽  
Dominik Stapf ◽  
Tobias Osterrieder ◽  
Vincent Barthel ◽  
Peter J. Wellmann
Keyword(s):  
Thin Films ◽  
Band Gap ◽  
Coarse Grained ◽  
High Porosity ◽  
Low Band Gap ◽  
Seeding Layer ◽  
X Ray ◽  
Face To Face ◽  
Copper Indium ◽  
Vis Spectroscopy

Copper indium gallium sulfo-selenide (CIGS) based solar cells show the highest conversion efficiencies among all thin-film photovoltaic competition. However, the absorber material manufacturing is in most cases dependent on vacuum-technology like sputtering and evaporation, and the use of toxic and environmentally harmful substances like H2Se. In this work, the goal to fabricate dense, coarse grained CuInSe2 (CISe) thin-films with vacuum-free processing based on nanoparticle (NP) precursors was achieved. Bimetallic copper-indium, elemental selenium and binary selenide (Cu2−xSe and In2Se3) NPs were synthesized by wet-chemical methods and dispersed in nontoxic solvents. Layer-stacks from these inks were printed on molybdenum coated float-glass-substrates via doctor-blading. During the temperature treatment, a face-to-face technique and mechanically applied pressure were used to transform the precursor-stacks into dense CuInSe2 films. By combining liquid phase sintering and pressure sintering, and using a seeding layer later on, issues like high porosity, oxidation, or selenium- and indium-depletion were overcome. There was no need for external Se atmosphere or H2Se gas, as all of the Se was directly in the precursor and could not leave the face-to-face sandwich. All thin-films were characterized with scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and UV/vis spectroscopy. Dense CISe layers with a thickness of about 2–3 µm and low band gap energies of 0.93–0.97 eV were formed in this work, which show potential to be used as a solar cell absorber.

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