Towards a full understanding of regioisomer effects of indene-C60 bisadduct acceptors in bulk heterojunction polymer solar cells

Journal article
(Original article)


Publication Details

Author(s): Cao T, Chen N, Liu G, Wan Y, Perea JD, Xia Y, Wang Z, Song B, Li N, Li X, Zhou Y, Brabec C, Li Y
Journal: Journal of Materials Chemistry A
Publication year: 2017
Volume: 5
Journal issue: 21
Pages range: 10206-10219
ISSN: 2050-7488
Language: English


Abstract


Indene-C60 bisadduct (IC60BA), which can offer a significantly higher open-circuit voltage (Voc) than monoadducts, has become the research focus as electron acceptor materials in polymer solar cells (PSCs) in recent years. However, despite its popularity, IC60BA have always been applied in PSCs as mixture of several regioisomers and the nature of this mixture has never been fully investigated and understood. Herein, for the first time, 12 major regioisomers of IC60BA were isolated and a full investigation was carried out with respect to their structure, abundance, solubility and their corresponding photovoltaic performance. The results show that the PSCs based on these regioisomeric structures present very diverse PCE and their photovoltaic performance was dramatically affected not only by the relative indene positions but also by the steric orientation of the two indene groups. Electrochemical studies further revealed that the effect of energetic disorder inside the IC60BA regioisomers on their photovoltaic performance is insignificant when applied in PSCs. However, the steric structures and solubility of the regioisomers were found to have significant impact on the morphology and bulk properties of the active layer of PSCs, which give rise to very different PCE of devices based on IC60BA regioisomers with different structures. © 2017 The Royal Society of Chemistry.



FAU Authors / FAU Editors

Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Li, Ning Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)
Perea Ospina, Jose Dario
Institute Materials for Electronics and Energy Technology (i-MEET)


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions with authors

Soochow University, Suzhou / 苏州大学


Research Fields

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials
Neue Materialien und Prozesse
Research focus area of a faculty: Technische Fakultät


How to cite

APA:
Cao, T., Chen, N., Liu, G., Wan, Y., Perea, J.D., Xia, Y.,... Li, Y. (2017). Towards a full understanding of regioisomer effects of indene-C60 bisadduct acceptors in bulk heterojunction polymer solar cells. Journal of Materials Chemistry A, 5(21), 10206-10219. https://dx.doi.org/10.1039/c7ta01665d

MLA:
Cao, Tiantian, et al. "Towards a full understanding of regioisomer effects of indene-C60 bisadduct acceptors in bulk heterojunction polymer solar cells." Journal of Materials Chemistry A 5.21 (2017): 10206-10219.

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Last updated on 2019-18-07 at 07:24

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