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High conductivity Ag-based metal organic complexes as dopant-free hole-transport materials for perovskite solar cells with high fill factors
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.ORCID iD: 0000-0001-5069-3245
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.
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2016 (English)In: Chemical Science, ISSN 2041-6520, E-ISSN 2041-6539, Vol. 7, no 4, 2633-2638 p.Article in journal (Refereed) PublishedText
Abstract [en]

Hole-transport materials (HTMs) play an important role as hole scavenger materials in the most efficient perovskite solar cells (PSCs). Here, for the first time, two Ag-based metal organic complexes (HA1 and HA2) are employed as a new class of dopant-free hole-transport material for application in PSCs. These HTMs show excellent conductivity and hole-transport mobility. Consequently, the devices based on these two HTMs exhibit unusually high fill factors of 0.76 for HA1 and 0.78 for HA2, which are significantly higher than that obtained using spiro-OMeTAD (0.69). The cell based on HA1-HTM in its pristine form achieved a high power conversion efficiency of 11.98% under air conditions, which is comparable to the PCE of the cell employing the well-known doped spiro-MeOTAD (12.27%) under the same conditions. More importantly, their facile synthesis and purification without using column chromatography makes these new silver-based HTMs highly promising for future commercial applications of PSCs. These results provide a new way to develop more low-cost and high conductivity metal-complex based HTMs for efficient PSCs.

Place, publisher, year, edition, pages
2016. Vol. 7, no 4, 2633-2638 p.
Keyword [en]
Column chromatography, Doping (additives), Metal complexes, Organometallics, Perovskite, Perovskite solar cells, Photoconducting materials, Silver, Solar cells, Commercial applications, Facile synthesis, High conductivity, High power conversion, High-conductivity metals, Hole transport materials, Hole transports, Metal-organic complexes
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Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-185388DOI: 10.1039/c5sc03569dISI: 000372614800020ScopusID: 2-s2.0-84961879899OAI: oai:DiVA.org:kth-185388DiVA: diva2:920472
Funder
Swedish Research CouncilSwedish Energy AgencyKnut and Alice Wallenberg Foundation
Note

QC 20160418

Available from: 2016-04-18 Created: 2016-04-18 Last updated: 2016-04-18Bibliographically approved

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Hua, YongXu, BoLiu, PengChen, HongTian, HainingCheng, MingKloo, LarsSun, Licheng
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