Planells, Miquel and Abate, Antonio and Hollman, Derek J. and Stranks, Samuel D. and Bharti, Vishal and Gaur, Jitender and Mohanty, Dibyajyoti and Chand, Suresh and Snaith, Henry J. and Robertson, Neil (2013) Diacetylene bridged triphenylamines as hole transport materials for solid state dye sensitized solar cells. Journal of Materials Chemistry A, 1 (23). pp. 6949-6960. ISSN 2050-7488

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Abstract

We have synthesized and characterized a series of triphenylamine-based hole-transport materials (HTMs), and studied their function in solid-state dye sensitized solar cells (ss-DSSCs). By increasing the electron-donating strength of functional groups (-H < -Me < -SMe < -OMe) we have systematically shifted the oxidation potential and ensuing photocurrent generation and open-circuit voltage of the solar cells. Correlating the electronic properties of the HTM to the device operation highlights a significant energy offset required between the Dye - HTM highest occupied molecular orbital (HOMO) energy levels. From this study, it is apparent that precise control and tuning of the oxidation potential is a necessity, and usually not achieved with most HTMs developed to date for ss-DSSCs. To significantly increase the efficiency of solid-state DSSCs understanding these properties, and implementing dye-HTM combinations to minimize the required HOMO offset is of central importance.

Item Type:	Article
Additional Information:	copyright for this article belongs to M/s Royal Society of Chemistry
Subjects:	Energy Fuels Materials Science Physical Chemistry/Chemical Physics
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 10:22
Last Modified:	19 Aug 2026 10:22
URI:	https://npl.csircentral.net/id/eprint/3291

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