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Carbon nanotube-based hybrid hole-transporting material and selective contact for high efficiency perovskite solar cells
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
Ecole Polytech Fed Lausanne, Lab Photomol Sci, EPFL SB ISIC LSPM, CH G1 523,Chemin Alamb,Stn 6, CH-1015 Lausanne, Switzerland..
Aalto Univ, Sch Sci, Dept Appl Phys, POB 15100, FI-00076 Aalto, Finland..
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2016 (English)In: Energy & Environmental Science, ISSN 1754-5692, E-ISSN 1754-5706, Vol. 9, no 2, 461-466 p.Article in journal (Refereed) Published
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Abstract [en]

We demonstrate a high efficiency perovskite solar cell with a hybrid hole-transporting material-counter electrode based on a thin single-walled carbon nanotube (SWCNT) film and a drop-cast 2,2,7,-7-tetrakis(N, N-di-p-methoxyphenylamine)-9,90-spirobifluorene (Spiro-OMeTAD) hole-transporting material (HTM). The average efficiency of the solar cells was 13.6%, with the record cell yielding 15.5% efficiency. The efficiency of the reference solar cells with spin-coated Spiro-OMeTAD hole-transportingmaterials (HTMs) and an evaporated gold counter electrode was 17.7% (record 18.8%), that of the cells with only a SWCNT counter electrode (CE) without additional HTM was 9.1% (record 11%) and that of the cells with gold deposited directly on the perovskite layer was 5% (record 6.3%). Our results show that it is possible to manufacture high efficiency perovskite solar cells with thin film (thickness less than 1 mu m) completely carbon-based HTMCEs using industrially upscalable manufacturing methods, such as press-transferred CEs and drop-cast HTMs.

Place, publisher, year, edition, pages
2016. Vol. 9, no 2, 461-466 p.
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Physical Chemistry
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URN: urn:nbn:se:uu:diva-280914DOI: 10.1039/c5ee03394bISI: 000369744500010OAI: oai:DiVA.org:uu-280914DiVA: diva2:912301
Funder
Swedish Energy AgencySwedish Research CouncilKnut and Alice Wallenberg FoundationStandUpEU, FP7, Seventh Framework Programme, 604472
Available from: 2016-03-16 Created: 2016-03-16 Last updated: 2017-11-30Bibliographically approved

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Aitola, KerttuSveinbjörnsson, KáriJohansson, Erik M. J.Hagfeldt, AndersBoschloo, Gerrit

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