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A comparative study of gel polymer electrolytes based on PVDF-HFP and liquid electrolytes, containing imidazolinium ionic liquids of different carbon chain lengths in DSSCs by Vembu Suryanarayanan; Kun-Mu Lee; Wen-Hsien Ho; Hung-Chang Chen; Kuo-Chuan Ho is a Engineering article available to read on EtoBox.

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The photoelectrochemical characteristics of titanium dioxide (TiO 2 )-based dye-sensitized solar cells (DSSCs) containing gel polymer electrolyte (GPE) and organic liquid electrolyte (OLE) were studied in detail. GPE was prepared by adding poly(vinyidene fluoride-cohexafluoro propylene) (PVDF-HFP) to imidazolinium ionic liquids (IILs) of the type, 1-methyl-3-alkyl imidazolinium iodides (alkyl is C n H 2n+1 , where n 1⁄4 3-10) in methoxy propionitrile (MPN) and the OLE contained the above molten salt in MPN. The IILs were synthesized in the laboratory and characterized by 1 H nuclear magnetic resonance spectroscopy (NMR). The conductivities (s) of both GPE and OLE decrease with increase in chain length (n) of the alkyl group of IILs; however, the effect is more drastic in the former case. The performance of the DSSCs containing OLE increases with the increase in alkyl chain length of IIL from C3 to C7, whereas, there is a linear decrease in the efficiency of the DSSCs incorporated with GPE containing IIL of alkyl chain length from C3 to C10. The change in short circuit current density (J SC ) determines the cell efficiency as the V OC of the DSSCs remains almost the same with increa

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Author

Vembu Suryanarayanan; Kun-Mu Lee; Wen-Hsien Ho; Hung-Chang Chen; Kuo-Chuan Ho

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0927-0248)

Published

2007

Language

EN

Field

Engineering (Physical Sciences)