Electrolyte additive of dye-sensitized solar cell and method of making the same
AssigneeNational Taipei University of Technology
InventorsSheng-Tung Huang, Chung-Kuang Yang
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Abstract
An electrolyte additive is selected from N-alkyl benzimidazole derivatives and is applicable to dye-sensitized solar cells. Accordingly, the electrolyte additive can be added to electrolyte at low concentration, and loss of function due to crystallization after long-term use can be prevented; in addition, short circuit photocurrent density and solar energy-to-electricity conversion efficiency of solar cells incorporating the electrolyte additive can be increased.
Claims12
An electrolyte additive selected from the group consisting of a compound of formula (1), a compound of formula (2), and a combination thereof:
- wherein each of l and m is independently between 0 and 20, with the proviso that l and m cannot be 0 at the same time;
- R represents hydrogen, alkyl, alkoxy, alkenyl, alkynyl, alkoxy-alkyl, a hydroxyl-substituted alkyl, a polyether group or phenyl, the number of carbon atom of R is between 0 and 20, and R is either linear or branched;
- and
- A represents methylene and n is between 1 and 10;
- wherein the electrolyte additive is adapted to increase a short circuit current density and/or solar energy-to-electricity conversion efficiency of a dye-sensitized solar cell.
Dependencies are inferred from the claim text.