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Issue 8, 2017
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Highly efficient halogen-free solvent processed small-molecule organic solar cells enabled by material design and device engineering

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Abstract

Low bandgap small molecules, BDTTNTTR and BDTSTNTTR, with benzo[1,2-b:4,5-b′]dithiophene (BDT) as the central donor unit and naphtho[1,2-c:5,6-c′]bis[1,2,5]thiadiazole (NT) as the second acceptor block, which were also π-bridged with terthiophenes on both sides, and end-capped with 3-ethylrhodanine electron-accepting groups, have been successfully synthesized for highly efficient small molecule solar cells (SM-OSCs). Based on tactful material design and device engineering, the resulting SM-OSCs processed with a halogen-free solvent of CS2 exhibited a high efficiency of 11.53% with a very small energy loss of 0.57 eV.

Graphical abstract: Highly efficient halogen-free solvent processed small-molecule organic solar cells enabled by material design and device engineering

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Article information


Submitted
22 Mar 2017
Accepted
05 Jun 2017
First published
05 Jun 2017

Energy Environ. Sci., 2017,10, 1739-1745
Article type
Communication

Highly efficient halogen-free solvent processed small-molecule organic solar cells enabled by material design and device engineering

J. Wan, X. Xu, G. Zhang, Y. Li, K. Feng and Q. Peng, Energy Environ. Sci., 2017, 10, 1739
DOI: 10.1039/C7EE00805H

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