Low Band Gap Polymers for Roll-to-Roll Coated Organic Photovoltaics – Design, Synthesis and Characterization

Green ◽  
2011 ◽  
Vol 1 (1) ◽  
Author(s):  
Eva Bundgaard ◽  
Ole Hagemann ◽  
Mikkel Jørgensen ◽  
Frederik C. Krebs
Keyword(s):  
Band Gap ◽  
Active Layer ◽  
Organic Photovoltaics ◽  
Large Area ◽  
Low Band Gap ◽  
Design Synthesis ◽  
Design And Synthesis ◽  
Roll To Roll ◽  
Vis Spectroscopy ◽  
Low Band Gap Polymers

AbstractIn this paper we present the design and synthesis of 25 new low band gap polymers. The polymers were characterized by UV-vis spectroscopy which showed optical band gaps of 2.0–0.9 eV. The polymers which were soluble enough were applied in organic photovoltaics, both small area devices with a spin coated active layer and in large area modules where all layers including the active layer were either roll-to-roll coated or printed. These experiments showed that the design of polymers compatible with roll-toroll coating is not straightforward and that there are various issues such as donor/acceptor fitting within the polymer, side chains to ensure solubility and HOMO/LUMO level alignment with the acceptor (e.g. [60]PCBM) to take into consideration.

scholarly journals Synthesis of Fluorene Based Alternating Copolymers using Direct Arylation Polymerization

2021 ◽  
Vol 33 (2) ◽  
pp. 393-398
Author(s):  
Mohd Sani Sarjadi ◽  
Yap Leong Khen ◽  
Xin Lin Wong ◽  
Zuhair Jamain ◽  
Md Lutfor Rahman
Keyword(s):  
Solar Cell ◽  
Band Gap ◽  
Active Layer ◽  
Optical Band Gap ◽  
Direct Arylation ◽  
Low Band Gap ◽  
Alternating Copolymers ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Direct Arylation Polymerization

Many researches have been done to obtain a low band gap and high Polymeric solar cell (PSCs) polymer either by creating new polymer or revising reported polymers from previous studies. In present work, two new copolymers were synthesized through direct arylation polymerization to produce poly(9,9-didodecylfluorene-alt-benzo[c][1,2,5]thiadiazole (P1) and poly(9,9-didodecylfluorene-altthieno[ 3,2-b]thiophene) (P2). The P1 and P2 are donor-accepter copolymers. P1 and P2 were compared to investigate its suitability to be applied in PSCs. The polymers obtained were characterized using FT-IR, NMR and UV-Vis spectroscopy. P1 shows two adsorption bands at λmax1 = 243 nm and λmax2 = 320 nm, whereas P2 also shows two adsorption bands at λmax1 = 243 nm and λmax2 = 427 nm. The optical band gap was calculated, P1 enabled band gap of 3.88 eV while P2 showed band gap of 2.91 eV. This work could be provided an insight to design and synthesize more efficient fluorene-based copolymers as active layer of PSCs in due course.

scholarly journals Design and synthesis of N-substituted perylene diimide based low band gap polymers for organic solar cell applications

RSC Advances ◽  
2018 ◽  
Vol 8 (53) ◽  
pp. 30468-30480 ◽  
Author(s):  
Savita Meena ◽  
Tauheed Mohammad ◽  
Viresh Dutta ◽  
Josemon Jacob
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Band Gap ◽  
Organic Solar Cells ◽  
Organic Solar Cell ◽  
Perylene Diimide ◽  
Low Band Gap ◽  
Design And Synthesis ◽  
Low Band Gap Polymers

Newly designed N-substituted perylene diimide based acceptor copolymers have been characterized and tested for organic solar cells with P3HT in different weight ratios.

Synthesis and properties of low band gap polymers based on thienyl thienoindole as a new electron-rich unit for organic photovoltaics

2015 ◽  
Vol 6 (33) ◽  
pp. 6011-6020 ◽  
Author(s):  
Joo Young Shim ◽  
Jiyeon Baek ◽  
Juae Kim ◽  
Song Yi Park ◽  
Jinwoo Kim ◽  
...  
Keyword(s):  
Band Gap ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Photovoltaics ◽  
Power Conversion ◽  
Low Band Gap ◽  
Low Band Gap Polymers

A series of polymers based on 6-(2-thienyl)-4H-thieno[3,2-b]indole, a new electron-rich unit for organic photovoltaics, was synthesized. The best-performing device demonstrated a power conversion efficiency of 3.35%.

Low Band Gap Polymers for Roll-to-Roll Coated Polymer Solar Cells

2010 ◽  
Vol 43 (19) ◽  
pp. 8115-8120 ◽  
Author(s):  
Eva Bundgaard ◽  
Ole Hagemann ◽  
Matthieu Manceau ◽  
Mikkel Jørgensen ◽  
Frederik C. Krebs
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Low Band Gap ◽  
Roll To Roll ◽  
Low Band Gap Polymers

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
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