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Facile synthesis of a hole transporting material with a silafluorene core for efficient mesoscopic CH3NH3PbI3 perovskite solar cells
Nanyang Technol Univ, Interdisciplinary Grad Sch, Energy Res Inst, Singapore 639798, Singapore..
Energy Res Inst NTU ERI N, Res Techno Plaza,X Frontier Block,Level 5, Singapore 637553, Singapore..
Nanyang Technol Univ, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore..
Energy Res Inst NTU ERI N, Res Techno Plaza,X Frontier Block,Level 5, Singapore 637553, Singapore..
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2016 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 4, no 22, 8750-8754 p.Article in journal (Refereed) PublishedText
Abstract [en]

A novel electron-rich small-molecule, 4,4'-(5,5-dihexyl-5H-dibenzo[b,d]silole-3,7-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) (S101), containing silafluorene as the core with arylamine side groups, has been synthesized via a short efficient route. When S101 was incorporated into a CH3NH3PbI3 perovskite solar cell as a hole transporting material (HTM), a short circuit photocurrent density (J(sc)) of 18.9 mA cm(-2), an open circuit voltage (V-oc) of 0.92 V, and a fill factor (FF) of 0.65 contributing to an overall power conversion efficiency (PCE) of similar to 11% which is comparable to the PCE obtained using the current state-of-the-art HTM 2,2',7,7'-tetrakis(N,N'-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD) (eta = 12.3%) were obtained. S101 is thus a promising HTM with the potential to replace the expensive spiro-OMeTAD due to its comparable performance and much simpler and less expensive synthesis route.

Place, publisher, year, edition, pages
2016. Vol. 4, no 22, 8750-8754 p.
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Physical Chemistry
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URN: urn:nbn:se:uu:diva-299897DOI: 10.1039/c6ta01776bISI: 000378583200029OAI: oai:DiVA.org:uu-299897DiVA: diva2:950379
Available from: 2016-07-29 Created: 2016-07-29 Last updated: 2016-07-29Bibliographically approved

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