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A supramolecular assembly of metal-free organic dye with zinc porphyrin chromophore for dye-sensitized solar cells.
- Source :
-
Dalton Transactions: An International Journal of Inorganic Chemistry . 11/21/2017, Vol. 46 Issue 43, p15124-15129. 6p. - Publication Year :
- 2017
-
Abstract
- Two porphyrin chromophores, P1 and P2, were prepared and used as antenna units to coordinate with a metal-free organic dye, JH1, containing pyridine groups. This supramolecular self-assembly strategy can not only effectively improve the light-harvesting ability of the devices but also effectively reduces electron recombination by preventing I3− of the electrolyte from penetrating into the TiO2 surface. The DSSC based on JH1 showed a PCE of 2.46%, with a Voc of 615 mV, Jsc of 6.54 mA cm−2, and FF of 61.18%. After supramolecular self-assembly, the Jsc and Voc of the device were greatly improved. Specifically for the device based on JH1 + P2, the PCE reached 4.39%, which is about 78% greater than the PCE of the device based on JH1; this is mainly due to the Jsc increase of 2.85 mA cm−2 and the Voc increase of 93 mV. Compared to co-sensitization, supramolecular self-assembly does not require tedious optimization steps; thus, this may be a promising and convenient way to improve the overall performance of DSSCs. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SUPRAMOLECULAR chemistry
*ORGANIC dyes
*DYE-sensitized solar cells
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 46
- Issue :
- 43
- Database :
- Academic Search Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 126097795
- Full Text :
- https://doi.org/10.1039/c7dt03373g