Interplay of Solvent Additive Concentration and Active Layer Thickness on the Performance of Small Molecule Solar Cells

A relationship between solvent additive concentration and active layer thickness in small‐molecule solar cells is investigated. Specifically, the additive concentration must scale with the amount of semiconductor material and not as absolute concentration in solution. Devices with a wide range of ac...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2014-11, Vol.26 (43), p.7308-7316
Main Authors: Love, John A., Collins, Samuel D., Nagao, Ikuhiro, Mukherjee, Subhrangsu, Ade, Harald, Bazan, Guillermo C., Nguyen, Thuc-Quyen
Format: Article
Language:English
Subjects:
Additives
Chlorobenzenes - chemistry
Devices
Electric Power Supplies
Equipment Design
Esters - chemistry
Linear Models
Microscopy, Atomic Force
Molecular Structure
Octanes - chemistry
pc-AFM
Photochemical Processes
Photovoltaic cells
R-SoXS
Semiconductor materials
Semiconductors
small molecule
solar cell
Solar cells
Solar Energy
Solutions
Solvents
Solvents - chemistry
Thiadiazoles - chemistry
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Summary:A relationship between solvent additive concentration and active layer thickness in small‐molecule solar cells is investigated. Specifically, the additive concentration must scale with the amount of semiconductor material and not as absolute concentration in solution. Devices with a wide range of active layers with thickness up to 200 nm can readily achieve efficiencies close to 6% when the right concentration of additive is used.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201402403