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Pt-sputtering-like NiCo2S4 counter electrode for efficient dye-sensitized solar cells.
- Source :
-
Electrochimica Acta . Feb2016, Vol. 192, p521-528. 8p. - Publication Year :
- 2016
-
Abstract
- A facile method is developed to prepare NiCo 2 S 4 counter electrode (CE) which is in-situ grown on SnO 2 : F transparent conductive glass (FTO) with mirror-like smooth surface. As demonstrated by analyses, the electrocatalytic activity, electrical conductivity and light reflectivity of the NiCo 2 S 4 CE exceed or approach to those of Pt-sputtering CE, and are much better than those of Pt-pyrolysis CE. Thus the conversion efficiency (η) of the dye sensitized solar cell (DSSC, 8.10%) based on NiCo 2 S 4 CE is higher than the cell based on Pt-sputtering CE (7.60%), and is superior to the one based on Pt-pyrolysis CE (7.01%). Remarkably, NiCo 2 S 4 CE also exhibits excellent chemical and mechanical stability. There are almost no changes on morphology and interfacial adhesion between NiCo 2 S 4 film and FTO substrate after sequential 1000-time scans of cyclic voltammetry and 100 cycles of 3 M Scotch tape detachment. The η of DSSC drops a little from 8.10% to 7.94%. The numerous superiorities of the Pt-sputtering-like NiCo 2 S 4 CE permit its promising application in DSSCs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00134686
- Volume :
- 192
- Database :
- Academic Search Index
- Journal :
- Electrochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 113405452
- Full Text :
- https://doi.org/10.1016/j.electacta.2016.02.004