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Nanomaterials 2016, 6(4), 64; doi:10.3390/nano6040064

Morphology-Controlled High-Efficiency Small Molecule Organic Solar Cells without Additive Solvent Treatment

1
National Photonics Semiconductor Lab, National Photonics Semiconductor Inc., Suwon-Si 17113, Korea
2
School of Information and Communication Technology, Griffith University, Southport QLD 4222, Australia
3
Nanomaterials Centre, School of Chemical Engineering, University of Queensland, Brisbane QLD 4072, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Guanying Chen
Received: 23 February 2016 / Revised: 23 March 2016 / Accepted: 29 March 2016 / Published: 8 April 2016
(This article belongs to the Special Issue Nanostructured Solar Cells)
View Full-Text   |   Download PDF [2523 KB, uploaded 8 April 2016]   |  

Abstract

This paper focuses on nano-morphology-controlled small-molecule organic solar cells without solvent treatment for high power-conversion efficiencies (PCEs). The maximum high PCE reaches up to 7.22% with a bulk-heterojunction (BHJ) thickness of 320 nm. This high efficiency was obtained by eliminating solvent additives such as 1,8-diiodooctane (DIO) to find an alternative way to control the domain sizes in the BHJ layer. Furthermore, the generalized transfer matrix method (GTMM) analysis has been applied to confirm the effects of applying a different thickness of BHJs for organic solar cells from 100 to 320 nm, respectively. Finally, the study showed an alternative way to achieve high PCE organic solar cells without additive solvent treatments to control the morphology of the bulk-heterojunction. View Full-Text
Keywords: small molecule; organic solar cell; bulk-heterojunction; optical simulation small molecule; organic solar cell; bulk-heterojunction; optical simulation
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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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Kim, I.K.; Jo, J.H.; Yun, J.-H. Morphology-Controlled High-Efficiency Small Molecule Organic Solar Cells without Additive Solvent Treatment. Nanomaterials 2016, 6, 64.

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