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Facile synthesis of fluorene-based hole transport materials for highly efficient perovskite solar cells and solid-state dye-sensitized solar cells
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.ORCID iD: 0000-0001-5069-3245
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2016 (English)In: Nano Energy, ISSN 2211-2855, Vol. 26, 108-113 p.Article in journal (Refereed) Published
Abstract [en]

Two novel low-cost fluorene-based hole transport materials (HTMs) HT1 and HT2 as alternatives to the expensive HTM Spiro-OMeTAD have been designed and synthesized for the application in perovskite solar cells (PSCs) and solid-state dye-sensitized solar cell (ssDSCs). The two HTMs were prepared through a facile two-step reaction from cheap starting material and with a total yield higher than 90%. These HTMs exhibit good solubility and charge-transport ability. PSCs based on HT2 achieved power conversion efficiency (PCE) of 18.04% under air conditions, which is comparable to that of the cell employing the commonly used Spiro-OMeTAD (18.27%), while HT1-based cell showed a slightly worse performance with a PCE of 17.18%. For ssDSCs, the HT2-based device yielded a PCE of 6.35%, which is also comparable to that of a cell fabricated based on Spiro-OMeTAD (6.36%). We found that the larger dimensional structure and molecular weight of HT2 enable better photovoltaic performance than that of the smaller one HT1. These results show that easily synthesized fluorene-based HTMs have great potential to replace the expensive Spiro-OMeTAD for both PSCs and ssDSCs. © 2016 Elsevier Ltd.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 26, 108-113 p.
Keyword [en]
Fluorene, Hole-transport material, Perovskite solar cells, Solid-state dye sensitized solar cell, Dyes, Hole mobility, Perovskite, Photoconducting materials, Solar cells, Dimensional structures, Facile synthesis, Fluorenes, Hole transport materials, Photovoltaic performance, Power conversion efficiencies, Solid-state dye-sensitized solar cells, Two-step reactions, Dye-sensitized solar cells
National Category
Chemical Sciences Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-197103DOI: 10.1016/j.nanoen.2016.05.006ScopusID: 2-s2.0-84969160182OAI: oai:DiVA.org:kth-197103DiVA: diva2:1056033
Funder
Swedish Research Council
Note

QC 20161213

Available from: 2016-12-13 Created: 2016-11-30 Last updated: 2016-12-13Bibliographically approved

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Hua, YongXu, BoLiu, PengCheng, MingKloo, LarsSun, Licheng
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Organic ChemistryCentre of Molecular Devices, CMDApplied Physical Chemistry
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