scholarly journals Synthesis and Characterization of Carbazole-Benzothiadiazole-Based Conjugated Polymers for Organic Photovoltaic Cells with Triazole in the Main Chain

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Eunhee Lim
Keyword(s):  
Conjugated Polymers ◽  
Main Chain ◽  
Photovoltaic Cells ◽  
Organic Photovoltaic ◽  
Synthesis And Characterization ◽  
Device Performance ◽  
Film Morphology ◽  
Optimal Amount ◽  
Coupling Polymerization

We have synthesized a series of carbazole-benzothiadiazole-triazole based copolymers, poly[(N-9′-heptadecanyl-2,7-carbazole)-co-(5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole))-co-((4-(4-butylphenyl)-3,5-diphenyl-4H-1,2,4]triazole))] (PCz3TBTz) by Suzuki coupling polymerization. The optical and electrochemical properties of the copolymers could be tuned by changing the comonomer unit of triazole from 0% to 80%. Organic photovoltaic (OPV) cells were fabricated by blending the synthesized polymers as a donor and PCBM as an acceptor. The material solubility and film morphology were improved by introducing the triazole unit in the main chain. Improved OPV device performance of 1.74% was achieved in the presence of an optimal amount of triazole moieties.

Synthesis and characterization of new selenophene-based conjugated polymers for organic photovoltaic cells

2011 ◽  
Vol 50 (3) ◽  
pp. 551-561 ◽  
Author(s):  
Woo-Hyung Lee ◽  
Sang Kyu Lee ◽  
Seon Kyoung Son ◽  
Ji-Eun Choi ◽  
Won Suk Shin ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Photovoltaic Cells ◽  
Organic Photovoltaic ◽  
Synthesis And Characterization ◽  
Organic Photovoltaic Cells

scholarly journals Synthesis and Characterization of Quinoxaline-Based Thiophene Copolymers as Photoactive Layers in Organic Photovoltaic Cells

2011 ◽  
Vol 32 (2) ◽  
pp. 417-423 ◽  
Author(s):  
Yoon-Suk Choi ◽  
Woo-Hyung Lee ◽  
Jae-Ryoung Kim ◽  
Sang-Kyu Lee ◽  
Won-Suk Shin ◽  
...  
Keyword(s):  
Photovoltaic Cells ◽  
Organic Photovoltaic ◽  
Synthesis And Characterization ◽  
Organic Photovoltaic Cells

TiOx Concentration Dependence of OPV Efficiency Optimization

2010 ◽  
Vol 93-94 ◽  
pp. 517-520 ◽  
Author(s):  
Anusit Keawprajak ◽  
Phimwipha Piyakulawat ◽  
Joerg Wlosnewski ◽  
Phansak Iamraksa ◽  
Chaiyuth Saekung ◽  
...  
Keyword(s):  
Spin Coating ◽  
Photovoltaic Cells ◽  
Organic Photovoltaic ◽  
Synthesis And Characterization ◽  
Aluminum Electrode ◽  
Efficiency Enhancement ◽  
Spectroscopy Technique ◽  
Efficiency Optimization ◽  
Anatase Structure

Titanium oxide TiOx material is used as electron transporter in organic photovoltaic cells (OPV). The layer was prepared between P3HT:PCBM as the active layer and the and aluminum electrode by spin coating technique. The synthesis and characterization of TiOx is described. Using Raman spectroscopy technique TiOx crystals show anatase structure. Varied concentrations of TiOx and isopropanol solvent were performed. The most optimized device efficiencies up to 2,0% was achieved at a 1:20 ratio, which indicated more than 50% efficiency enhancement comparing with the device without TiOx layer. The major improvement of the cell was originated from photocurrent enhancement.

scholarly journals Synthesis and characterization of cyclobutenedione–bithiophene π-conjugated polymers: acetal-protecting strategy for Kumada–Tamao–Corriu coupling polymerization between aryl bromide and Grignard reagents

RSC Advances ◽  
2019 ◽  
Vol 9 (70) ◽  
pp. 40863-40872
Author(s):  
Tomoyuki Ohishi ◽  
Takuma Sone ◽  
Kohei Oda ◽  
Akihiro Yokoyama
Keyword(s):  
Conjugated Polymers ◽  
Grignard Reagents ◽  
Synthesis And Characterization ◽  
Aryl Bromide ◽  
Donor Acceptor ◽  
Coupling Polymerization

Donor–acceptor-type π-conjugated polymers consisting of cyclobutenedione as an acceptor and bithiophene as a donor were synthesized by Kumada–Tamao–Corriu coupling polymerization of an acetal-protected monomer.

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