scholarly journals Investigation of the Effects of Non-Conjugated Co-Grafts on the Spectroelectrochemical and Photovoltaic Properties of Novel Conjugated Graft Copolymers Based on Poly(3-hexylthiophene)

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1064 ◽  
Author(s):  
Tomasz Jarosz ◽  
Karolina Gebka ◽  
Kinga Kepska ◽  
Mieczyslaw Lapkowski ◽  
Przemyslaw Ledwon ◽  
...  
Keyword(s):  
Solar Cells ◽  
Bulk Heterojunction ◽  
Average Molecular Weight ◽  
Photovoltaic Performance ◽  
Acid Methyl Ester ◽  
Hydroxyl Groups ◽  
Photovoltaic Properties ◽  
Heterojunction Solar Cells ◽  
Mobility Of Charge Carriers ◽  
Early Rise

A new type of polysiloxane copolymers, with conjugated–regioregular poly(3-hexylthiophene) (P3HT) and non-conjugated-poly(ethylene glycol) (PEG)-grafts have been synthesised, and their properties have been studied alongside those of the parent conjugated polymer (P3HT). Spectroelectrochemical and conductometric analyses revealed an early rise of the conductance of the polymers. Once spectral changes begin taking place, the conductance is stable, implying a loss of mobility of charge carriers, even though standard doping/dedoping patterns are observed. Prototype bulk heterojunction solar cells have been fabricated, based on P3HT/[6,6]-Phenyl-C61-butyric acid methyl ester (PCBM), as well as by substituting P3HT for each of the copolymers. The prototype solar cells achieved PCEs of up to 2.11%. This is one of the highest reported power conversion efficiency (PCE) for devices based on P3HT with low average molecular weight Mn = 12 kDa. Strong correlation between the structure of the copolymer and its photovoltaic performance was found. Elongation of PEG copolymer chain and the use of methyl group instead of terminal hydroxyl groups significantly improved photovoltaic performance.

Narrow band gap conjugated polymer for improving the photovoltaic performance of P3HT:PCBM ternary blend bulk heterojunction solar cells

2015 ◽  
Vol 6 (6) ◽  
pp. 962-972 ◽  
Author(s):  
M. G. Murali ◽  
Arun D. Rao ◽  
Sarita Yadav ◽  
Praveen C. Ramamurthy
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Conjugated Polymer ◽  
Narrow Band ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Ternary Blend ◽  
Photovoltaic Properties ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

A new low band gap conjugated polymer PBDO-T-TDP is synthesized and used as a sensitizer in P3HT:PCBM based BHJ solar cells and its effect on their photovoltaic properties is investigated by blending them at various weight ratios.

scholarly journals Effect of side chain length on the charge transport, morphology, and photovoltaic performance of conjugated polymers in bulk heterojunction solar cells

2016 ◽  
Vol 4 (5) ◽  
pp. 1855-1866 ◽  
Author(s):  
Chunhui Duan ◽  
Robin E. M. Willems ◽  
Jacobus J. van Franeker ◽  
Bardo J. Bruijnaers ◽  
Martijn M. Wienk ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Charge Transport ◽  
Chain Length ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Side Chain ◽  
Photovoltaic Properties ◽  
Side Chain Length ◽  
Heterojunction Solar Cells

The effect of side chain length on the photovoltaic properties of conjugated polymers is systematically investigated.

Roll-to-Roll Fabrication of Bulk Heterojunction Plastic Solar Cells using the Reverse Gravure Coating Technique

2008 ◽  
Vol 1091 ◽  
Author(s):  
Daniel Tobjork ◽  
Harri Aarnio ◽  
Tapio Mäkelä ◽  
Ronald Österbacka
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Acid Methyl Ester ◽  
Ambient Air ◽  
Plastic Substrate ◽  
Heterojunction Solar Cells ◽  
Coating Technique ◽  
Roll To Roll ◽  
Poly Styrene Sulfonate

AbstractThe roll-to-roll reverse gravure (RG) coating technique was used to produce thin homogeneous films (∼100 nm) for organic bulk heterojunction solar cells. The conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and the active layer regioregular poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) were successfully subsequently RG coated on an ITO covered plastic substrate in ambient air. Working solar cells were achieved after annealing and thermal evaporation of the top contact. The AM1.5 power conversion efficiency (PCE) of the RG coated organic solar cells was determined to 0.74% (at 100 mW/cm2). This was very similar to the results of a reference device that was spin coated on a glass substrate in a nitrogen glove box.

Bulk-Heterojunction Solar Cells Based on Poly(3-hexylthiophene) and (6,6)-phenyl-C61-butyric-acid Methyl Ester on Polyethylene Terephthalate Substrates

2013 ◽  
Vol 538 ◽  
pp. 3-6
Author(s):  
Yuichiro Yanagi ◽  
Takanori Okukawa ◽  
Akira Yoshida ◽  
Masaya Ohzeki ◽  
Tatsuki Yanagidate ◽  
...  
Keyword(s):  
Solar Cells ◽  
Methyl Ester ◽  
Polyethylene Terephthalate ◽  
Butyric Acid ◽  
Bulk Heterojunction ◽  
Acid Methyl Ester ◽  
Heterojunction Solar Cells ◽  
Acid Methyl ◽  
Butyric Acid Methyl Ester ◽  
Pet Substrate

Bulk-heterojunction solar cells were fabricated based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61 butyric acid methyl ester (PCBM) on an indium tin oxide (ITO) coated flexible polyethylene terephthalate (PET) substrate. Performance improvements of the flexible solar cells by optimizing post thermal annealing conditions are reported. The solar cells annealed at 150 oC showed the minimal deformation of the PET substrate, and the resulted conversion efficiency was 1.35% under the light irradiation conditions of the Superscript textAM1.5 simulated solar intensity of 100 mW/cm2.

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