Thermal stability and electrical studies on hybrid and composite sol-gel quasi-solid-state electrolytes for dye-sensitized solar cells

Andigoni Apostolopoulou, Viola Nagygyörgy, J. Madarász, Elias Stathatos, G. Pokol

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Nanocomposite organic/inorganic materials made through sol-gel method can be applied as quasi-solid-state electrolytes aiming to overcome the common issues of evaporation, leaking and stability in dye-sensitized solar cells. Two different kinds of quasi-solid-state electrolytes, depending on the different interactions between silica as inorganic phase and organic substances such as polyethylene/or polypropylene oxide derivatives, are prepared by the sol-gel technique in room temperature. Release dynamics of volatile components from two types of quasi-solid-state electrolytes are studied by thermogravimetry (TG) in order to predict the stability or changes in composites during their application in dye-sensitized solar cells. Two online coupled evolved gas analytical tools (TG-EGA-FTIR and TG/DTA-EGA-MS) are applied to test the gel electrolytes for accelerated thermal vaporization, degradation and decomposition processes as a function of temperature during dynamic heating in air. Stable solar cells based on the different quasi-solid-state electrolytes are constructed and characterized with current density curves exhibiting overall efficiencies varying from 2.9 to 4.2 % for thin TiO2 films sensitized with standard commercial dye.

Original languageEnglish
Pages (from-to)371-380
Number of pages10
JournalJournal of Thermal Analysis and Calorimetry
Volume121
Issue number1
DOIs
Publication statusPublished - Apr 8 2015

Fingerprint

Electrolytes
Sol-gels
Thermodynamic stability
thermal stability
solar cells
dyes
electrolytes
gels
solid state
thermogravimetry
composite materials
Composite materials
Thermogravimetric analysis
Polypropylene oxides
inorganic materials
Polyethylene oxides
Vaporization
polypropylene
Silicon Dioxide
Differential thermal analysis

Keywords

  • Dye-sensitized solar cells
  • Hybrid organic inorganic materials
  • Quasi-solid-state electrolytes
  • Silica-based electrolytes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics

Cite this

Thermal stability and electrical studies on hybrid and composite sol-gel quasi-solid-state electrolytes for dye-sensitized solar cells. / Apostolopoulou, Andigoni; Nagygyörgy, Viola; Madarász, J.; Stathatos, Elias; Pokol, G.

In: Journal of Thermal Analysis and Calorimetry, Vol. 121, No. 1, 08.04.2015, p. 371-380.

Research output: Contribution to journalArticle

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