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Integrated Design of Organic Hole Transport Materials for Efficient Solid-State Dye-Sensitized Solar Cells
KTH Royal Institute Technology, Sweden.
KTH Royal Institute Technology, Sweden; Uppsala University, Sweden.
Shandong Normal University, Peoples R China; KTH Royal Institute Technology, Sweden.
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2015 (Engelska)Ingår i: ADVANCED ENERGY MATERIALS, ISSN 1614-6832, Vol. 5, nr 3, artikel-id 1401185Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A series of triphenylamine-based small molecule organic hole transport materials (HTMs) with low crystallinity and high hole mobility are systematically investigated in solid-state dye-sensitized solar cells (ssDSCs). By using the organic dye LEG4 as a photosensitizer, devices with X3 and X35 as the HTMs exhibit desirable power conversion efficiencies (PCEs) of 5.8% and 5.5%, respectively. These values are slightly higher than the PCE of 5.4% obtained by using the state-of-the-art HTM Spiro-OMeTAD. Meanwhile, transient photovoltage decay measurement is used to gain insight into the complex influences of the HTMs on the performance of devices. The results demonstrate that smaller HTMs induce faster electron recombination in the devices and suggest that the size of a HTM plays a crucial role in device performance, which is reported for the first time.

Ort, förlag, år, upplaga, sidor
Wiley-VCH Verlag , 2015. Vol. 5, nr 3, artikel-id 1401185
Nationell ämneskategori
Energiteknik
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URN: urn:nbn:se:liu:diva-116837DOI: 10.1002/aenm.201401185ISI: 000350565400010OAI: oai:DiVA.org:liu-116837DiVA, id: diva2:800641
Anmärkning

Funding Agencies|Swedish Research Council; Swedish Energy Agency; Knut and Alice Wallenberg Foundation; National Natural Science Foundation of China [21120102036, 91233201, 21403133]; National Basic Research Program of China (973 program) [2014CB239402]; China Scholarship Council (CSC)

Tillgänglig från: 2015-04-07 Skapad: 2015-04-07 Senast uppdaterad: 2015-04-16

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Zhang, Fengling

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Biomolekylär och Organisk ElektronikTekniska högskolan
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