Narrow bandgap conjugated polymers based on a high-mobility polymer template for visibly transparent photovoltaic devices

2016 ◽  
Vol 4 (44) ◽  
pp. 17333-17343 ◽  
Author(s):  
Jianyu Yuan ◽  
Michael Ford ◽  
Guanqun Ding ◽  
Huilong Dong ◽  
Ming Wang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Energy Levels ◽  
High Mobility ◽  
Optical Bandgap ◽  
Photovoltaic Devices ◽  
Narrow Bandgap ◽  
Photovoltaic Applications ◽  
Polymer Template

In this contribution, starting from a high mobility polymer P2 with a regioregular D–A–D–A structure, we set out to further optimize the optical bandgap and energy levels for photovoltaic applications.

scholarly journals Charge delocalization characteristics of regioregular high mobility polymers

2017 ◽  
Vol 8 (2) ◽  
pp. 1146-1151 ◽  
Author(s):  
J. E. Coughlin ◽  
A. Zhugayevych ◽  
M. Wang ◽  
G. C. Bazan ◽  
S. Tretiak
Keyword(s):  
Density Functional Theory ◽  
Conjugated Polymers ◽  
Density Functional ◽  
High Mobility ◽  
Structural Units ◽  
Functional Theory ◽  
Charge Delocalization ◽  
Narrow Bandgap ◽  
The Family ◽  
Structural And Electronic Properties

Density Functional Theory modeling examines structural and electronic properties of charge states in the family of narrow bandgap conjugated polymers with controlled regioregularity among the structural units.

Effect of carbon hybridization in 9H-fluorene unit on the photovoltaic properties of different fluorene-based conjugated polymers

2017 ◽  
Vol 30 (6) ◽  
pp. 677-687
Author(s):  
Zhiguan Lin ◽  
Gang Wei ◽  
Ling Li ◽  
Zhenhuan Lu ◽  
Jiefeng Hai ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Photovoltaic Performance ◽  
Photovoltaic Properties ◽  
Absorption Energy ◽  
Narrow Bandgap ◽  
Donor Acceptor ◽  
Optical Bandgaps ◽  
Fine Tune

To investigate the effect of different carbon hybridization in 9H-fluorene on the resultant polymers, a series of donor–acceptor conjugated polymers have been synthesized by copolymerizing substituted 9H-fluorenes with triazoloquinoxaline. All polymers exhibit good solution-processability and broad absorption in 350–1000 nm region with narrow optical bandgaps ranging from 1.27 eV to 1.55 eV. The results indicate that fluorene functionalization via different carbon hybridization on 9-position could be an effective strategy to fine-tune the absorption, energy levels, and photovoltaic performance of the polymers. 9-Position sp2-hybridized carbon in fluorene could enhance absorption of ultraviolet-visible and form good morphology of blending layers, through its planar rigid structure. All polymer solar cells devices exhibited moderate performance with the best power conversion efficiency of 3.02% achieved based on P2. Compared to ladder-type multifused fluorene, carbon-hybridized 9H-fluorene units can be a very useful building block for constructing narrow bandgap polymers with facile synthesis, and even interesting optoelectronic properties.

scholarly journals Application of quinoline derivatives in third-generation photovoltaics

2021 ◽  
Author(s):  
Gabriela Lewinska ◽  
Jerzy Sanetra ◽  
Konstanty W. Marszalek
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Photovoltaic Cells ◽  
Third Generation ◽  
Quinoline Derivatives ◽  
Emission Layer ◽  
Light Emitting ◽  
Photovoltaic Applications ◽  
Architecture And Design

AbstractAmong many chemical compounds synthesized for third-generation photovoltaic applications, quinoline derivatives have recently gained popularity. This work reviews the latest developments in the quinoline derivatives (metal complexes) for applications in the photovoltaic cells. Their properties for photovoltaic applications are detailed: absorption spectra, energy levels, and other achievements presented by the authors. We have also outlined various methods for testing the compounds for application. Finally, we present the implementation of quinoline derivatives in photovoltaic cells. Their architecture and design are described, and also, the performance for polymer solar cells and dye-synthesized solar cells was highlighted. We have described their performance and characteristics. We have also pointed out other, non-photovoltaic applications for quinoline derivatives. It has been demonstrated and described that quinoline derivatives are good materials for the emission layer of organic light-emitting diodes (OLEDs) and are also used in transistors. The compounds are also being considered as materials for biomedical applications.

Electrophoretic Deposition of CdSe Nanocrystals for Photovoltaic Applications

2007 ◽  
Vol 1031 ◽  
Author(s):  
Nathanael Smith ◽  
Kevin J Emmett ◽  
Sandra J Rosenthal
Keyword(s):  
Titanium Dioxide ◽  
Electrophoretic Deposition ◽  
Room Temperature ◽  
Tio2 Thin Film ◽  
Cdse Nanocrystals ◽  
Photovoltaic Devices ◽  
Photovoltaic Applications ◽  
Nanocrystalline Titanium ◽  
Alternative Techniques

AbstractCdSe nanocrystals chemically linked to nanocrystalline titanium dioxide substrates form a promising material for nanostructured photovoltaic devices. The usual method for attaching the nanocrystals to the titanium dioxide substrate is by means of a linking molecule (such as mercaptopropionic acid) or in-situ growth. In this paper, we report the use of an alternative technique, electrophoretic deposition (EPD), to directly deposit already formed CdSe nanocrystals onto the substrate. In EPD, a voltage is established between two electrodes that are immersed in a solution of nanocrystals. At room temperature, a fraction of the nanocrystals are thermally charged, and these charged nanocrystals migrate to the electrodes and adhere to the surface. A significant advantage of EPD over the use of linking molecules is the speed with which the nanocrystals are deposited: EPD takes only a few minutes, compared to the several hours required for the alternative techniques. Additionally, we have fabricated initial photovoltaic devices based on electrophoretically deposited CdSe nanocrystals on a planar TiO2 thin film.

scholarly journals Synthesis of bistriphenylamine- and benzodithiophene-based random conjugated polymers for organic photovoltaic applications

2017 ◽  
Vol 55 (22) ◽  
pp. 3705-3715 ◽  
Author(s):  
Asli Cetin ◽  
Cagla Istanbulluoglu ◽  
Serife Ozdemir Hacioglu ◽  
Sevki Can Cevher ◽  
Levent Toppare ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Organic Photovoltaic ◽  
Photovoltaic Applications

scholarly journals Energy levels distribution in supersaturated silicon with titanium for photovoltaic applications

2015 ◽  
Vol 106 (2) ◽  
pp. 022105 ◽  
Author(s):  
E. Pérez ◽  
H. Castán ◽  
H. García ◽  
S. Dueñas ◽  
L. Bailón ◽  
...  
Keyword(s):  
Energy Levels ◽  
Photovoltaic Applications
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