Issue 8, 2017

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

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

Supplementary files

Article information

Article type
Communication
Submitted
22 3 2017
Accepted
05 6 2017
First published
05 6 2017

Energy Environ. Sci., 2017,10, 1739-1745

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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