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DNA Based Hybrid Material for Interface Engineering in Polymer Solar Cells
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Surface Physics and Chemistry. Linköping University, Faculty of Science & Engineering.
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2018 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 10, no 11, p. 9579-9586Article in journal (Refereed) Published
Abstract [en]

A new solution processable electron transport material (ETM) is introduced for use in photovoltaic devices, which consists of a metallic conjugated polyelectrolyte, poly(4-(2,3-dihydrothieno[3,4-b]-[1,4]dioxin-2-yl-methoxy)-1-butanesulfonic acid (PEDOT-S), and surfactant-functionalized deoxyribonucleic acid (DNA) (named DNA:CTMA:PEDOT-S). This ETM is demonstrated to effectively work for bulk-heterojunction organic photovoltaic devices (OPV) based on different electron acceptor materials. The fill factor, the open circuit voltage, and the overall power conversion efficiency of the solar cells with a DNA:CTMA:PEDOT-S modified cathode are comparable to those of devices with a traditional lithium fluoride/aluminum cathode. The new electron transport layer has high optical transmittance, desired work function and selective electron transport. A dipole effect induced by the use of the surfactant cetyltrimethylammonium chloride (CTMA) is responsible for lowering the electrode work function. The DNA:CTMA complex works as an optical absorption dilutor, while PEDOT-S provides the conducting pathway for electron transport, and allows thicker layer to be used, enabling printing. This materials design opens a new pathway to harness and optimize the electronic and optical properties of printable interface materials.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2018. Vol. 10, no 11, p. 9579-9586
Keywords [en]
organic photovoltaic device; electron transport material; DNA based hybrid material; self-doped polyelectrolyte; high optical transmittance
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-147580DOI: 10.1021/acsami.7b17807ISI: 000428356800045PubMedID: 29505234OAI: oai:DiVA.org:liu-147580DiVA, id: diva2:1201809
Note

Funding Agencies|Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [SFO-Mat-LiU 2009-00971]; Strategic Research Foundation of Sweden through the project SiOS; Knut and Alice Wallenberg foundation through a Wallenberg Scholar grant

Available from: 2018-04-26 Created: 2018-04-26 Last updated: 2018-04-26

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Elfwing, AndersCai, WanzhuOuyang, LiangqiLiu, XianjieXia, YuxinInganäs, Olle
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