Phenothiazine-based small-molecule organic solar cells with power conversion efficiency over 7% and open circuit voltage of about 1.0 V using solvent vapor annealing

2018 ◽  
Vol 20 (9) ◽  
pp. 6321-6329 ◽  
Author(s):  
Yogajivan Rout ◽  
Rajneesh Misra ◽  
Rahul Singhal ◽  
Subhayan Biswas ◽  
Ganesh D. Sharma
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Open Circuit ◽  
Solvent Vapor ◽  
Heterojunction Solar Cells ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

We have used two unsymmetrical small molecules with a D–A–D–π–D configuration as small molecule donors, along with PC71BM as an acceptor, for solution processed bulk heterojunction solar cells.

Understanding the effect of solvent vapor annealing on solution-processed A–D–A oligothiophene bulk-heterojunction solar cells: the role of alkyl side chains

2016 ◽  
Vol 4 (7) ◽  
pp. 2571-2580 ◽  
Author(s):  
Cordula D. Wessendorf ◽  
Ana Perez-Rodriguez ◽  
Jonas Hanisch ◽  
Andreas P. Arndt ◽  
Ibrahim Ata ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solvent Vapor ◽  
Heterojunction Solar Cells ◽  
Effect Of Solvent ◽  
Vapor Annealing ◽  
Alkyl Side Chains ◽  
Solvent Vapor Annealing

Solvent vapor annealing (SVA) can strongly influence the morphology of oligomer:fullerene based organic solar cells.

scholarly journals Improving the efficiencies of small molecule solar cells by solvent vapor annealing to enhance J-aggregation

2019 ◽  
Vol 7 (31) ◽  
pp. 9618-9624 ◽  
Author(s):  
Liangang Xiao ◽  
Zhengdong Li ◽  
Qin Hu ◽  
Yawei Liu ◽  
Wenkai Zhong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Small Molecule ◽  
Film Morphology ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

The enhanced J-aggregation increases the crystallinity of the small molecules and forms a favorable film morphology with a fiber-like structure.

scholarly journals Reduced bimolecular recombination in blade-coated, high-efficiency, small-molecule solar cells

2017 ◽  
Vol 5 (15) ◽  
pp. 6893-6904 ◽  
Author(s):  
Sebastian Engmann ◽  
Hyun Wook Ro ◽  
Andrew A. Herzing ◽  
Dean M. DeLongchamp ◽  
Chad R. Snyder ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
High Efficiency ◽  
Bulk Heterojunction ◽  
Annealing Process ◽  
Device Performance ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Bimolecular Recombination ◽  
Solvent Vapor Annealing

We report the performance and morphology of blade-coated bulk heterojunction devices based on the small molecule donor p-DTS(FBTTh2)2 treated with a postdeposition solvent vapor annealing process that improves the device performance and significantly reduces bimolecular recombination.

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