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Int. J. Mol. Sci. 2015, 16(9), 20326-20343; doi:10.3390/ijms160920326

Rational Design of Diketopyrrolopyrrole-Based Small Moleculesas Donating Materials for Organic Solar Cells

Inner Mongolia Key Laboratory of Photoelectric Functional Materials and College of Chemistry and Chemical Engineering, Chifeng University, Chifeng 024000, China
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Author to whom correspondence should be addressed.
Academic Editor: Bing Yan
Received: 6 July 2015 / Revised: 17 August 2015 / Accepted: 21 August 2015 / Published: 27 August 2015
(This article belongs to the Section Physical Chemistry, Theoretical and Computational Chemistry)
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Abstract

A series of diketopyrrolopyrrole-based small molecules have been designed toexplore their optical, electronic, and charge transport properties as organic solar cell(OSCs) materials. The calculation results showed that the designed molecules can lowerthe band gap and extend the absorption spectrum towards longer wavelengths.The designed molecules own the large longest wavelength of absorption spectra,the oscillator strength, and absorption region values. The optical, electronic, and chargetransport properties of the designed molecules are affected by the introduction of differentπ-bridges and end groups. We have also predicted the mobility of the designed moleculewith the lowest total energies. Our results reveal that the designed molecules are expectedto be promising candidates for OSC materials. Additionally, the designed molecules areexpected to be promising candidates for electron and/or hole transport materials. On thebasis of our results, we suggest that molecules under investigation are suitable donors for[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and its derivatives as acceptors of OSCs. View Full-Text
Keywords: diketopyrrolopyrrole; electronic and optical properties; charge transportproperty; organic solar cells (OSCs) diketopyrrolopyrrole; electronic and optical properties; charge transportproperty; organic solar cells (OSCs)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Jin, R.; Wang, K. Rational Design of Diketopyrrolopyrrole-Based Small Moleculesas Donating Materials for Organic Solar Cells. Int. J. Mol. Sci. 2015, 16, 20326-20343.

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