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DDQ as an effective p-type dopant for the hole-transport material X1 and its application in stable solid-state dye-sensitized solar cells
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2018 (English)In: Journal of Energy Challenges and Mechanics, ISSN 2095-4956, E-ISSN 2056-9386, Vol. 27, no 2, p. 413-418Article in journal (Refereed) Published
Abstract [en]

X1 (MeO-TPD) is an inexpensive and easily synthesized pi-conjugated molecule that has been used as a hole-transport material (HTM) in solid-state dye-sensitized solar cells (ssDSSCs), achieving relatively high efficiency. In this paper, we characterize the physicochemical properties of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and show that it is a promising p-dopant in a spin-coating solution with X1 as the HTM. The doped ssDSSCs showed an increase in short-circuit current density from 5.38 mA cm(-2) to 7.39 mA cm(-2), and their overall power conversion efficiency increased from 2.9% to 4.3%. Also, ssDSSCs with DDQ-doped X1 were more stable than the undoped samples, demonstrating that DDQ can act as a p-type dopant in X1 as an HTM for highly efficient, stable ssDSSCs.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2018. Vol. 27, no 2, p. 413-418
Keyword [en]
p-Type dopant, X1, DDQ, ssDSSCs
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-224007DOI: 10.1016/j.jechem.2017.12.003ISI: 000425896100012Scopus ID: 2-s2.0-85038409600OAI: oai:DiVA.org:kth-224007DiVA, id: diva2:1192888
Note

QC 20180323

Available from: 2018-03-23 Created: 2018-03-23 Last updated: 2018-03-23Bibliographically approved

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Sun, Licheng

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