uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Dye sensitised solar cells with nickel oxide photocathodes prepared via scalable microwave sintering
Show others and affiliations
2013 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 15, no 7, 2411-2420 p.Article in journal (Refereed) Published
Abstract [en]

Photoactive NiO electrodes for cathodic dye-sensitised solar cells (p-DSCs) have been prepared with thicknesses ranging between 0.4 and 3.0 mu m by spray-depositing pre-formed NiO nanoparticles on fluorine-doped tin oxide (FTO) coated glass substrates. The larger thicknesses were obtained in sequential sintering steps using a conventional furnace (CS) and a newly developed rapid discharge sintering (RDS) method. The latter procedure is employed for the first time for the preparation of p-DSCs. In particular, RDS represents a scalable procedure that is based on microwave-assisted plasma formation that allows the production in series of mesoporous NiO electrodes with large surface areas for p-type cell photocathodes. RDS possesses the unique feature of transmitting heat from the bulk of the system towards its outer interfaces with controlled confinement of the heating zone. The use of RDS results in a drastic reduction of processing times with respect to other deposition methods that involve heating/calcination steps with associated reduced costs in terms of energy. P1-dye sensitized NiO electrodes obtained via the RDS procedure have been tested in DSC devices and their performances have been analysed and compared with those of cathodic DSCs derived from CS-deposited samples. The largest conversion efficiencies (0.12%) and incident photon-to-current conversion efficiencies, IPCEs (50%), were obtained with sintered NiO electrodes having thicknesses of similar to 1.5-2.0 mu m. In all the devices, the photogenerated holes in NiO live significantly longer (tau(h) similar to 1 s) than have previously been reported for P1-sensitized NiO photocathodes. In addition, P1-sensitised sintered electrodes give rise to relatively high photovoltages (up to 135 mV) when the triiodide-iodide redox couple is used.

Place, publisher, year, edition, pages
2013. Vol. 15, no 7, 2411-2420 p.
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-195626DOI: 10.1039/c2cp43592fISI: 000313891400020OAI: oai:DiVA.org:uu-195626DiVA: diva2:608312
Available from: 2013-02-27 Created: 2013-02-26 Last updated: 2013-02-27Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Boschloo, GerritHagfeldt, Anders
By organisation
Physical Chemistry
In the same journal
Physical Chemistry, Chemical Physics - PCCP
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 441 hits
ReferencesLink to record
Permanent link

Direct link