NDLI: Assembly, charge-transfer and solar cell performance with porphyrin-C60 on NiO for p-type dye-sensitized solar cells

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Assembly, charge-transfer and solar cell performance with porphyrin-C60 on NiO for p-type dye-sensitized solar cells

Content Provider	Semantic Scholar
Author	Benazzi, Elisabetta Summers, Gareth H. Black, Fiona A. Sazanovich, Igor V. Clark, Ian P. Gibson, Elizabeth A.
Copyright Year	2019
Abstract	A series of zinc tetraphenylporphyrin photosensitizers furnished with three different anchoring groups, benzoic acid, phenylphosphonate and coumarin-3-carboxylic acid, were prepared using 'click' methodology. All three gave modest performances in liquid junction devices with I3–/I– as the electrolyte. The distinct spectroscopic properties of the porphyrins allowed a detailed investigation of the adsorption behaviour and kinetics for charge transfer at the NiO\|porphyrin interface. The adsorption behaviour was modelled using the Langmuir isotherm model and the phosphonate anchoring group was found to have the highest affinity for NiO (6.65 × 104 M−1) and the fastest rate of adsorption (2.46 × 107 cm2 mol−1 min−1). The photocurrent of the p-type dye-sensitized solar cells increased with increasing dye loading and corresponding light harvesting efficiency of the electrodes. Coordinating the zinc to a pyridyl-functionalized fullerene (C60PPy) extended the charge-separated state lifetime from ca 200 ps to 4 ns and a positive improvement in the absorbed photon to current conversion efficiency was observed. Finally, we confirmed the viability of electron transfer from the appended C60PPy to phenyl-C61-butyric acid methyl ester, a typical electron transporting layer in organic photovoltaics. This has implications for assembling efficient solid-state tandem solar cells in the future. This article is part of a discussion meeting issue 'Energy materials for a low carbon future'.
File Format	PDF HTM / HTML
DOI	10.1098/rsta.2018.0338
PubMed reference number	31280722
Journal	Medline
Volume Number	377
Alternate Webpage(s)	https://eprint.ncl.ac.uk/file_store/production/255326/72448B6B-09DB-46B9-A771-607289ECB74D.pdf
Journal	Philosophical Transactions of the Royal Society A
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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