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Efficient solid state dye-sensitized solar cells based on an oligomer hole transport material and an organic dye
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, Organic Chemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Centre of Molecular Devices, CMD.
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2013 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 1, no 46, 14467-14470 p.Article in journal (Refereed) Published
Abstract [en]

A low-cost and easily-synthesized organic hole transport material (HTM) X3 bearing triphenylamine units and an organic dye was utilized for solid state dye sensitized solar cells (ssDSCs), which have achieved the power conversion efficiencies of 5.8% and 7.1% under 1 sun and 0.46 sun, respectively, outperforming the ssDSC based on Spiro-OMeTAD 5.4% (1 sun) and 6.4% (0.46 sun).

Place, publisher, year, edition, pages
2013. Vol. 1, no 46, 14467-14470 p.
Keyword [en]
Spiro-Ometad, Molecular Materials, Semiconductors, Electrolyte, Performance, Conductors, Polymer, Devices
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-136534DOI: 10.1039/c3ta13646aISI: 000326785700006Scopus ID: 2-s2.0-84887222098OAI: oai:DiVA.org:kth-136534DiVA: diva2:677044
Funder
Swedish Research CouncilSwedish Energy AgencyKnut and Alice Wallenberg Foundation
Note

QC 20131209

Available from: 2013-12-09 Created: 2013-12-05 Last updated: 2015-09-16Bibliographically approved
In thesis
1. Advanced Organic Hole Transport Materials for Solution-Processed Photovoltaic Devices
Open this publication in new window or tab >>Advanced Organic Hole Transport Materials for Solution-Processed Photovoltaic Devices
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Solution-processable photovoltaic devices (PVs), such as perovskite solar cells (PSCs) and solid-state dye-sensitized solar cells (sDSCs) show great potential to replace the conventional silicon-based solar cells for achieving low-cost and large-area solar electrical energy generation in the near future, due to their easy manufacture and high efficiency. Organic hole transport materials (HTMs) play important roles in both PSCs and sDSCs, and thereby can well facilitate the hole separation and transportation, for obtaining high performance solar cells.

The studies in this thesis aimed to develop advanced small-molecule organic HTMs with low-cost, high hole mobility and conductivity for the achievement of highly efficient, stable and reproducible sDSCs and PSCs. In order to achieve these objectives, two different strategies were utilized in this thesis: the development of new generation HTMs with simple synthetic routes and the introduction of cost-effective p-type dopants to control the charge transport properties of HTMs.

In Chapter 1 and Chapter 2, a general introduction of the solution-processed sDSCs and PSCs, as well as the characterization methods that are used in this thesis were presented.

In Chapter 3 and Chapter 4, a series of novel triphenylamine- and carbazole- based HTMs with different oxidation potential, hole mobility, conductivity and molecular size were designed and synthesized, and then systematically applied and investigated in sDSCs and PSCs.

In Chapter 5, two low-cost and colorless p-type dopants AgTFSI and TeCA were introduced for the organic HTM-Spiro-OMeTAD, which can significantly increase the conductivity of the Spiro-OMeTAD films. The doping effects on the influence of sDSC and PSC device performances were also systematically investigated.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. 76 p.
Series
TRITA-CHE-Report, ISSN 1654-1081 ; 2015:42
National Category
Organic Chemistry
Research subject
Chemistry
Identifiers
urn:nbn:se:kth:diva-173651 (URN)978-91-7595-660-2 (ISBN)
Public defence
2015-10-09, F3, KTH, Lindstedtsvägen 26, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20150916

Available from: 2015-09-16 Created: 2015-09-16 Last updated: 2015-09-16Bibliographically approved

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