Phenothiazine-based small molecules for bulk heterojunction organic solar cells; variation of side-chain polarity and length of conjugated system

2019 ◽  
Vol 65 ◽  
pp. 232-242 ◽  
Author(s):  
Srikanth Revoju ◽  
Subhayan Biswas ◽  
Bertil Eliasson ◽  
Ganesh D. Sharma
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Side Chain

Design of low band gap small molecules with alkyldicyanovinyl acceptor and different donor groups for efficient bulk heterojunction organic solar cells

2015 ◽  
Author(s):  
Yuriy N. Luponosov ◽  
Jie Min ◽  
Alexander N. Solodukhin ◽  
Sergei N. Chvalun ◽  
Tayebeh Ameri ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Band Gap ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Low Band Gap

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.

A new 2D-naphtho[1,2-b:5,6-b’]dithiophene based donor small molecules for bulk-heterojunction organic solar cells

2019 ◽  
Vol 163 ◽  
pp. 30-39 ◽  
Author(s):  
Sushil S. Bagde ◽  
Hanok Park ◽  
Van-Huong Tran ◽  
Soo-Hyoung Lee
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Bulk Heterojunction

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.

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.

scholarly journals Morphology versus Vertical Phase Segregation in Solvent Annealed Small Molecule Bulk Heterojunction Organic Solar Cells

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Alexander Kovalenko ◽  
Darina Stoyanova ◽  
Jan Pospisil ◽  
Ivaylo Zhivkov ◽  
Ladislav Fekete ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Phase Segregation ◽  
Shunt Resistance ◽  
Solvent Annealing ◽  
High Fullerene ◽  
Capacitance Voltage ◽  
Harvesting Efficiency

The deep study of solvent annealed small molecules bulk heterojunction organic solar cells based on DPP(TBFu)2 : PC60BM blend is carried out. To reveal the reason of the solvent annealing advantage over the thermal one, capacitance-voltage measurements were applied. It was found that controlling the vertical phase segregation in the solar cells a high fullerene population in the vicinity of the cathode could be achieved. This results in increase of the shunt resistance of the cell, thus improving the light harvesting efficiency.

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