Facile synthesized organic hole transporting material for perovskite solar cell with efficiency of 19.8%
2016 (English)In: Nano Energy, ISSN 2211-2855, Vol. 23, 138-144 p.Article in journal (Refereed) PublishedText
The exploration of alternative molecular hole-transporting materials (HTMs) specifically for high performance perovskite solar cells (PSCs) is a relatively recent research area. Aiming for further increasing the 'efficiency-cost ratio' of PSCs, we developed a spiro[fluorene-9,9'-xanthene] based HTM (X59) via two-step synthesis from commercial precursors for perovskite solar cells (PSCs) that works as effectively as the well-known HTM-Spiro-OMeTAD-based device under the same conditions. The molecular structure was analyzed by X-ray crystallography indicating a similar packing regime as for Spiro-OMeTAD. An impressive PCE of 19.8% was achieved by using X59 as HTM in PSC, which can compete with the record PCE of 20.8% by using the state-of-the-art-HTM Spiro-OMeTAD (Tress et al., 2016) . The optimized devices employing X59 as HTM exhibited minimized hysteresis, excellent reproducibility and reasonable stability under dark and dry conditions. The present finding highlights the potential of spiro-type HTM for high performance PSCs and paves the way to a much deceased fabrication cost for potential commercialization of perovskite solar panels.
Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 23, 138-144 p.
Hole transporting material, Hysteresis, Perovskite, Single crystal, Crystallography, Efficiency, Hole mobility, Perovskite solar cells, Single crystals, X ray crystallography, Exploration of alternatives, Hole-transporting materials, Optimized devices, Organic hole transporting materials, Recent researches, Reproducibilities, State of the art, Two-step synthesis, Solar cells
IdentifiersURN: urn:nbn:se:kth:diva-186987DOI: 10.1016/j.nanoen.2016.03.020ISI: 000375045900017ScopusID: 2-s2.0-84962374920OAI: oai:DiVA.org:kth-186987DiVA: diva2:928812
FunderSwedish Energy AgencySwedish Research CouncilKnut and Alice Wallenberg Foundation
QC 201605162016-05-162016-05-162016-05-30Bibliographically approved