Excellent anti-fogging dye-sensitized solar cells based on superhydrophilic nanoparticle coatings

Jung Tae Park, Jong Hak Kim, Daeyeon Lee

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We present a facile method for producing anti-fogging (AF) and anti-reflection (AR) coating functionalized photoanodes via one-step SiO 2 nanoparticle coating for high performance solid state dye-sensitized solar cells (ssDSSCs). The AF and AR coating functionalized photoanodes are prepared by spin-coating of partially aggregated SiO2 colloidal solution. Poly((1-(4-ethenylphenyl)methyl)-3-butyl-imidazolium iodide) (PEBII), prepared via free radical polymerization, is used as a solid electrolyte in I2-free ssDSSCs. We systematically investigate the enhanced light harvesting characteristics of AF and AR coating functionalized photoanode-based ssDSSCs by measuring UV-visible spectroscopy, incident photon-to-electron conversion efficiency (IPCE) curves under fogging conditions. Compared with conventional photoanode based ssDSSCs, the AF and AR coating functionalized photoanodes substantially suppress fogging and reduce reflection, leading to significantly enhanced light harvesting, especially under fogging conditions. ssDSSCs made of AF and AR coating functionalized photoanodes exhibit an improved photovoltaic efficiency of 6.0% and 5.9% under non-fogging and fogging conditions, respectively, and retain their device efficiencies for at least 20 days, which is a significant improvement of ssDSSCs with conventional photoanodes (4.7% and 1.9% under non-fogging and fogging conditions, respectively). We believe that AF and AR functionalization via one-step SiO 2 colloidal coating is a promising method for enhancing light harvesting properties in various solar energy conversion applications.

Original languageEnglish
Pages (from-to)7362-7368
Number of pages7
JournalNanoscale
Volume6
Issue number13
DOIs
Publication statusPublished - 2014 Jul 7

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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