Roll to roll compatible fabrication of inverted organic solar cells with a self-organized charge selective cathode interfacial layer

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Zhang H, Tan WY, Fladischer S, Ke L, Ameri T, Li N, Turbiez M, Spiecker E, Zhu XH, Cao Y, Brabec C
Zeitschrift: Journal of Materials Chemistry A
Jahr der Veröffentlichung: 2016
Band: 4
Heftnummer: 14
Seitenbereich: 5032-5038
ISSN: 2050-7496
Sprache: Englisch


Abstract


We successfully demonstrate a simple approach to printing efficient, inverted organic solar cells (OSCs) with a self-organized charge selective cathode interface layer based on the small-molecule Phen-NaDPO. Different from previous studies, Phen-NaDPO molecules were blended into a polymer/fullerene blend, comprising a low bandgap diketopyrrolopyrrole-quinquethiophene alternating copolymer pDPP5T-2 and phenyl-C-butyric acid methyl ester (PCBM), and processed by doctor blading in air. We observed a spontaneous, surface energy driven migration of Phen-NaDPO towards the ZnO interface and a subsequent formation of electron selective and barrier free extraction contacts. In the presence of 0.5 wt% Phen-NaDPO, a PCE of 5.4% was achieved for the inverted device based on an ITO/ZnO cathode. Notably, the photovoltaic performances remained at the same level with increasing the Phen-NaDPO concentration in the active layer from 0.25 to 1 wt%. Furthermore, this approach could be proven to effectively work with other cathodes such as bare ITO and ITO/AZO. The self-organization of Phen-NaDPO through spontaneous vertical phase separation is mainly attributed to its high surface energy and strong interaction with the cathode material. The present results highlight that a self-organized cathode interfacial material processed from a "ternary" active layer is fully compatible with the requirements for roll-to-roll fabrication of inverted organic solar cells.



FAU-Autoren / FAU-Herausgeber

Ameri, Tayebeh Dr.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Brabec, Christoph Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Rechberger, Stefanie Dr.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Ke, Lili
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Li, Ning Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Spiecker, Erdmann Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Zhang, Hong
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Autor(en) der externen Einrichtung(en)
BASF Schweiz AG
South China University of Technology (SCUT) / 华南理工大学


Zitierweisen

APA:
Zhang, H., Tan, W.-Y., Fladischer, S., Ke, L., Ameri, T., Li, N.,... Brabec, C. (2016). Roll to roll compatible fabrication of inverted organic solar cells with a self-organized charge selective cathode interfacial layer. Journal of Materials Chemistry A, 4(14), 5032-5038. https://dx.doi.org/10.1039/c6ta00391e

MLA:
Zhang, Hong, et al. "Roll to roll compatible fabrication of inverted organic solar cells with a self-organized charge selective cathode interfacial layer." Journal of Materials Chemistry A 4.14 (2016): 5032-5038.

BibTeX: 

Zuletzt aktualisiert 2018-19-11 um 20:50