LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Experimental and theoretical investigation of dye sensitized solar cells integrated with crosslinked poly(vinylpyrrolidone) polymer electrolyte using initiated chemical vapor deposition

Photo from wikipedia

Initiated chemical vapor deposition is used to integrate crosslinked poly(vinylpyrrolidone) (PVP) as a polymer electrolyte into the mesoporous TiO2 photoanode of dye sensitized solar cells (DSSCs). By adjusting the fractional… Click to show full abstract

Initiated chemical vapor deposition is used to integrate crosslinked poly(vinylpyrrolidone) (PVP) as a polymer electrolyte into the mesoporous TiO2 photoanode of dye sensitized solar cells (DSSCs). By adjusting the fractional saturation ratio of ethylene glycol diacrylate (EGDA) crosslinker to vinylpyrrolidone (VP) monomer, the amount of crosslinker within the crosslinked polymer is controlled directly, and a minimum ratio of 0.2:1 (EGDA to VP) is found to form a robust insoluble crosslinked film. Fineman-Ross copolymer analysis indicates that both VP and EGDA prefer to polymerize with VP rather than with EGDA, likely due to reduced steric hindrance. DSSCs incorporating crosslinked PVP polymer electrolyte are found to have 51% higher power conversion efficiency (37% higher in open circuit voltage and 25% higher in fill factor) compared to DSSCs with liquid electrolytes. First-principles macroscopic mathematical modeling reveals that the polymer electrolyte shifts the conduction band of TiO2 (vs. normal hydrogen electrode) negatively, increases shunt resistance, and affects interfacial processes like back-electron surface recombination in the cell.

Keywords: chemical vapor; initiated chemical; polymer; vinylpyrrolidone; vapor deposition; polymer electrolyte

Journal Title: Thin Solid Films
Year Published: 2017

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.