Synthesis and properties of low bandgap star molecules TPA-[DTS-PyBTTh3]3 and DMM-TPA[DTS-PyBTTh3]3 for solution-processed bulk heterojunction organic solar cells

2014 ◽  
Vol 2 (39) ◽  
pp. 8412-8422 ◽  
Author(s):  
Kimin Lim ◽  
Seung Yeon Lee ◽  
Kihyung Song ◽  
G. D. Sharma ◽  
Jaejung Ko
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Low Bandgap ◽  
Star Molecules

Two symmetrical planar star shaped organic small molecules TPA[DTS-PyBTTh3]3 (1) and DMM-TPA[DTS-PyBTTh3]3 (2) with TPA and fused TPA core donors, respectively, and three branched DTS-PyBTTh3 units were synthesized and characterized.

Symmetrical and unsymmetrical triphenylamine based diketopyrrolopyrroles and their use as donors for solution processed bulk heterojunction organic solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (102) ◽  
pp. 99685-99694 ◽  
Author(s):  
Yuvraj Patil ◽  
Rajneesh Misra ◽  
F. C. Chen ◽  
M. L. Keshtov ◽  
Ganesh D. Sharma
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Solution Processed ◽  
Cross Coupling Reaction

Two small molecules DPP3 (D–π–A) and DPP4 (D–π–A–π–D) with triphenylamine (TPA) donors and diketopyrrolopyrrole (DPP) acceptors linked with ethyne linkers were designed and synthesized by the Pd-catalyzed Sonogashira cross-coupling reaction.

Solution-processed new porphyrin-based small molecules as electron donors for highly efficient organic photovoltaics

2015 ◽  
Vol 51 (77) ◽  
pp. 14439-14442 ◽  
Author(s):  
Song Chen ◽  
Liangang Xiao ◽  
Xunjin Zhu ◽  
Xiaobing Peng ◽  
Wai-Kwok Wong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Photovoltaics ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Electron Donors ◽  
Solution Processed

A series of new A–D–A structural 5,15-dialkylated porphyrin-cored small molecules have been developed as donors in bulk heterojunction organic solar cells, and the highest power conversion efficiency of 6.49% has been achieved.

Asymmetric triphenylamine–phenothiazine based small molecules with varying terminal acceptors for solution processed bulk-heterojunction organic solar cells

2018 ◽  
Vol 20 (9) ◽  
pp. 6390-6400 ◽  
Author(s):  
Srikanth Revoju ◽  
Subhayan Biswas ◽  
Bertil Eliasson ◽  
Ganesh D. Sharma
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
End Group

A change of electron-withdrawing end group in organic donor compounds in blends with PC71BM results in enhancement of solar cell PCE from 4.79 to 7.25%.

Small molecule based N-phenyl carbazole substituted diketopyrrolopyrroles as donors for solution-processed bulk heterojunction organic solar cells

2016 ◽  
Vol 18 (33) ◽  
pp. 22999-23005 ◽  
Author(s):  
Yuvraj Patil ◽  
Rajneesh Misra ◽  
F. C. Chen ◽  
Ganesh D. Sharma
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Homo Lumo

We report two acetylene-bridged small molecules DPP5 and DPP6 with low HOMO–LUMO gaps as donors along with PC71BM as an acceptor for the fabrication of solution-processed bulk heterojunction solar cells.

scholarly journals Diketopyrrolopyrrole based small molecules with near infrared absorption for solution processed organic solar cells

2016 ◽  
Vol 126 ◽  
pp. 173-178 ◽  
Author(s):  
Huijing Zhang ◽  
Nailiang Qiu ◽  
Wang Ni ◽  
Bin Kan ◽  
Miaomiao Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Infrared Absorption ◽  
Organic Solar Cells ◽  
Near Infrared ◽  
Solution Processed

Furan-bridged thiazolo [5,4-d]thiazole based D–π–A–π–D type linear chromophore for solution-processed bulk-heterojunction organic solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (9) ◽  
pp. 6286-6293 ◽  
Author(s):  
M. Nazim ◽  
Sadia Ameen ◽  
M. Shaheer Akhtar ◽  
Hyung-Kee Seo ◽  
Hyung-Shik Shin
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Organic Chromophore

Novel furan-bridged thiazolo[5,4-d]thiazole based π-conjugated organic chromophore (RFTzR) was formulated and utilized for the fabrication of solution-processed small molecule organic solar cells (SMOSCs).

scholarly journals Planar D-π-A Configured Dimethoxy Vinylbenzene Based Small Organic Molecule for Solution-Processed Bulk Heterojunction Organic Solar Cells

2020 ◽  
Vol 10 (17) ◽  
pp. 5743
Author(s):  
Shabaz Alam ◽  
M. Shaheer Akhtar ◽  
Abdullah ◽  
Eun-Bi Kim ◽  
Hyung-Shik Shin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Power Conversion Efficiency ◽  
Organic Solar Cells ◽  
Organic Molecule ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Solution Processed ◽  
Small Organic Molecule ◽  
Donor Material

A new and effective planar D-π-A configured small organic molecule (SOM) of 2-5-(3,5-dimethoxystyryl)thiophen-2-yl)methylene)-1H-indene-1,3(2H)-dione, abbreviated as DVB-T-ID, was synthesized using 1,3-indanedione acceptor and dimethoxy vinylbenzene donor units, connected through a thiophene π-spacer. The presence of a dimethoxy vinylbenzene unit and π-spacer in DVB-T-ID significantly improved the absorption behavior by displaying maximum absorbance at ~515 nm, and the reasonable band gap was estimated as ~2.06 eV. The electronic properties revealed that DVB-T-ID SOMs exhibited promising HOMO (−5.32 eV) and LUMO (−3.26 eV). The synthesized DVB-T-ID SOM was utilized as donor material for fabricating solution-processed bulk heterojunction organic solar cells (BHJ-OSCs) and showed a reasonable power conversion efficiency (PCE) of ~3.1% with DVB-T-ID:PC61BM (1:2, w/w) active layer. The outcome of this work clearly reflects that synthesized DVB-T-ID based on 1,3-indanedione units is a promising absorber (donor) material for BHJ-OSCs.

Solution-processed small molecules based on benzodithiophene and difluorobenzothiadiazole for inverted organic solar cells

2015 ◽  
Vol 6 (44) ◽  
pp. 7726-7736 ◽  
Author(s):  
Xunfan Liao ◽  
Feiyan Wu ◽  
Lifu Zhang ◽  
Lie Chen ◽  
Yiwang Chen
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Solution Processed

Fluorinated BDT(TffBTTT6)2 and nonfluorinated BDT(TBTTT6)2 are designed and synthesized to extensively investigate the effect of fluorination in small molecules.

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