Preparation and characterization of nanocrystalline Pt/TCG counterelectrodes for dye-sensitized solar cells

Katsanaki, AV; Tsoukleris, DS; Falaras, P; Karayianni, HS; Bernard, M-C

dc.contributor.author	Katsanaki, AV	en
dc.contributor.author	Tsoukleris, DS	en
dc.contributor.author	Falaras, P	en
dc.contributor.author	Karayianni, HS	en
dc.contributor.author	Bernard, M-C	en
dc.date.accessioned	2014-03-01T02:45:45Z
dc.date.available	2014-03-01T02:45:45Z
dc.date.issued	2008	en
dc.identifier.issn	0199-6231	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/32362
dc.subject	Dye-sensitized solar cells	en
dc.subject	Platinum counterelectrode	en
dc.subject	Spin-coating technique	en
dc.subject	Thermal decomposition method	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Acids	en
dc.subject.other	Cells	en
dc.subject.other	Concentration (process)	en
dc.subject.other	Conversion efficiency	en
dc.subject.other	Cytology	en
dc.subject.other	Decomposition	en
dc.subject.other	Electric fault location	en
dc.subject.other	Electrochemical properties	en
dc.subject.other	Electrodes	en
dc.subject.other	Electrolysis	en
dc.subject.other	Film preparation	en
dc.subject.other	Glass	en
dc.subject.other	Operations research	en
dc.subject.other	Photoelectrochemical cells	en
dc.subject.other	Photoresists	en
dc.subject.other	Photovoltaic cells	en
dc.subject.other	Platinum	en
dc.subject.other	Pyrolysis	en
dc.subject.other	Solar cells	en
dc.subject.other	Solar energy	en
dc.subject.other	Solar equipment	en
dc.subject.other	Spin dynamics	en
dc.subject.other	Substrates	en
dc.subject.other	Coating depositions	en
dc.subject.other	Conductive glasses	en
dc.subject.other	Counter electrodes	en
dc.subject.other	Diffusion Coefficients	en
dc.subject.other	Dye-sensitized solar cells	en
dc.subject.other	Electrochemical behaviors	en
dc.subject.other	Electrode surfaces	en
dc.subject.other	Experimental parameters	en
dc.subject.other	Fill factors	en
dc.subject.other	Hexachloroplatinic acids	en
dc.subject.other	Nanocrystalline	en
dc.subject.other	Performance characteristics	en
dc.subject.other	Precursor concentrations	en
dc.subject.other	Pt films	en
dc.subject.other	RedOx electrolytes	en
dc.subject.other	Short circuits	en
dc.subject.other	Solid states	en
dc.subject.other	Spin-coating technique	en
dc.subject.other	Surface characteristics	en
dc.subject.other	Thermal decomposition method	en
dc.subject.other	Thermal decompositions	en
dc.subject.other	Electrochemical electrodes	en
dc.title	Preparation and characterization of nanocrystalline Pt/TCG counterelectrodes for dye-sensitized solar cells	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1115/1.2969805	en
heal.identifier.secondary	http://dx.doi.org/10.1115/1.2969805	en
heal.identifier.secondary	041008	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	Transparent counter electrodes were prepared on transparent conductive glass (TCG) substrates from a hexachloroplatinic acid (H2PtCl 6) solution applying the thermal decomposition method in combination with the spin-coating deposition technique. The effect of the precursor concentration and the number of deposited platinum layers on the surface characteristics of the Pt films was examined, and the relation between those surface characteristics and the electrochemical properties of the corresponding modified Pt/TCG electrodes was defined. Four types of counterelectrodes were prepared, differing in the concentration of the H2PtCl6 solution (0.03M and 0.15M) and in the number of Pt layers (one or two Pt layers); their performance as counterelectrodes was evaluated after their incorporation into dye-sensitized solar cells (DSSCs) employing a solid state redox electrolyte. The obtained results show that solar cells using counterelectrodes prepared from the 0.03M H2PtCl6 solution and consisting of two Pt layers (Pt032 electrode) exhibited the best performance characteristics (diffusion coefficient D*I3 =1.58 × 10-5 cm2 s-1, conversion efficiency η = 2.16%, fill factor ff=62.14%, and short circuit photocurrent I sc=4.71 mA cm-2). The electrochemical behavior of the modified counterelectrodes is consistent with the surface characteristics of the Pt film that formed on the conductive glass substrate, which seems to be significantly affected by the adopted method and the adjusted experimental parameters (Pt concentration and number of Pt layers). Specifically, this type of electrodes beside their low roughness (Rq = 11.5 nm), also presents a high complexity (Df = 2.3). As a result, for this kind of solid state DSSCs, the less rough but the more complex the Pt/TCG electrode surface, the higher the efficiency of the corresponding solar cells. Copyright © 2008 by ASME.	en
heal.publisher	ASME-AMER SOC MECHANICAL ENG	en
heal.journalName	Journal of Solar Energy Engineering, Transactions of the ASME	en
dc.identifier.doi	10.1115/1.2969805	en
dc.identifier.isi	ISI:000259805200008	en
dc.identifier.volume	130	en
dc.identifier.issue	4	en
dc.identifier.spage	0410081	en
dc.identifier.epage	0410087	en