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.

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.

Side chain engineering in DTBDT-based small molecules for efficient organic photovoltaics

Nanoscale ◽  
2019 ◽  
Vol 11 (29) ◽  
pp. 13845-13852 ◽  
Author(s):  
Jisu Hong ◽  
Ji Young Choi ◽  
Kyunghun Kim ◽  
Nam-Suk Lee ◽  
Jiqiang Li ◽  
...  
Keyword(s):  
Small Molecules ◽  
Small Molecule ◽  
Organic Photovoltaics ◽  
Side Chain ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

A new small-molecule donor with a DTBDT core exhibits apposite blend morphologies and a maximum PCE of 9.18% by side chain engineering and solvent vapor annealing.

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.

scholarly journals Efficiency enhancement in solution-processed organic small molecule: Fullerene solar cells via solvent vapor annealing

2015 ◽  
Vol 106 (18) ◽  
pp. 183302 ◽  
Author(s):  
Jingsheng Miao ◽  
Hui Chen ◽  
Feng Liu ◽  
Baofeng Zhao ◽  
Lingyu Hu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Efficiency Enhancement ◽  
Solution Processed ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

Time-Dependent Morphology Evolution of Solution-Processed Small Molecule Solar Cells during Solvent Vapor Annealing

2016 ◽  
Vol 6 (10) ◽  
pp. 1502579 ◽  
Author(s):  
Jie Min ◽  
Xuechen Jiao ◽  
Ibrahim Ata ◽  
Andres Osvet ◽  
Tayebeh Ameri ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Time Dependent ◽  
Morphology Evolution ◽  
Solution Processed ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

scholarly journals Film morphology evolution during solvent vapor annealing of highly efficient small molecule donor/acceptor blends

2016 ◽  
Vol 4 (40) ◽  
pp. 15511-15521 ◽  
Author(s):  
Sebastian Engmann ◽  
Hyun Wook Ro ◽  
Andrew Herzing ◽  
Chad R. Snyder ◽  
Lee J. Richter ◽  
...  
Keyword(s):  
Small Molecule ◽  
Morphology Evolution ◽  
Film Morphology ◽  
Solvent Vapor ◽  
X Ray ◽  
X Ray Scattering ◽  
Vapor Annealing ◽  
Donor Acceptor ◽  
Solvent Vapor Annealing

In-situ X-ray scattering studies of solvent vapor annealing of the active layer in benzodithiophene terthiophene rhodanine (BTR) solar cells reveals the mechanisms for morphology transformation and device improvement.

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