Diacetylene bridged triphenylamines as hole transport materials for solid state dye sensitized solar cells
| Autor: | Suresh Chand, Derek J. Hollman, Samuel D. Stranks, Dibyajyoti Mohanty, Miquel Planells, Vishal Bharti, Antonio Abate, Henry J. Snaith, Jitender Gaur, Neil Robertson |
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| Přispěvatelé: | Planells, M, Abate, A, Hollman, D J, Stranks, S D, Bharti, V, Gaur, J, Mohanty, D, Chand, S, Snaith, H J, Robertson, N |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Photocurrent
METAL-OXIDE ORGANIC SEMICONDUCTORS Materials science Diacetylene HIGHLY-EFFICIENT Renewable Energy Sustainability and the Environment DERIVATIVES Kinetics General Chemistry Crystal structure Photochemistry Triphenylamine CONDUCTORS Organic semiconductor chemistry.chemical_compound Dye-sensitized solar cell chemistry REGENERATION General Materials Science CRYSTAL-STRUCTURES ORGANOMETAL HALIDE PEROVSKITES HOMO/LUMO KINETICS CHARGE SEPARATION |
| Zdroj: | Planells, M, Abate, A, Hollman, D J, Stranks, S D, Bharti, V, Gaur, J, Mohanty, D, Chand, S, Snaith, H J & Robertson, N 2013, ' Diacetylene bridged triphenylamines as hole transport materials for solid state dye sensitized solar cells ', Journal of Materials Chemistry A: materials for energy and sustainability, vol. 1, no. 23, pp. 6949-6960 . https://doi.org/10.1039/c3ta11417a |
| DOI: | 10.1039/c3ta11417a |
| Popis: | 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. © 2013 The Royal Society of Chemistry. |
| Databáze: | OpenAIRE |
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