Toward plasmonic solar cells: Protection of silver nanoparticles via atomic layer deposition of TiO 2

Stacey D. Standridge, George C Schatz, Joseph T Hupp

Research output: Contribution to journalArticle

200 Citations (Scopus)

Abstract

Plasmonic silver nanoparticles have unique properties that lend themselves to unusual optical applications, potentially including use as absorption amplifiers in dye-sensitized solar cells (DSSCs). However, these particles are easily damaged under oxidizing conditions. Atomic layer deposition of TiO 2 onto transparent-conductive-oxide-supported silver particles was examined as a means of protecting particles while simultaneously incorporating them into DSSC-functional photoelectrodes. The resulting assemblies were exposed to corrosive I -/I 3 - solutions, and the degree of silver etching was determined via scanning electron microscopy and ultraviolet - visible spectroscopy. To form a pinhole-free (i.e., fully protective) crystalline TiO 2 layer, 7.7 nm (300 cycles) must be deposited. If, however, a 0.2 nm (2 cycles) Al 2O 3 adhesion layer is included, only 5.8 nm (211 cycles) of TiO 2 are necessary for the formation of a pinhole-free coating.

Original languageEnglish
Pages (from-to)2596-2600
Number of pages5
JournalLangmuir
Volume25
Issue number5
DOIs
Publication statusPublished - Mar 3 2009

Fingerprint

Atomic layer deposition
atomic layer epitaxy
Silver
Solar cells
solar cells
silver
pinholes
Nanoparticles
Caustics
nanoparticles
cycles
Ultraviolet visible spectroscopy
dyes
silver oxides
Etching
Adhesion
Crystalline materials
Coatings
assemblies
Scanning electron microscopy

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Toward plasmonic solar cells : Protection of silver nanoparticles via atomic layer deposition of TiO 2. / Standridge, Stacey D.; Schatz, George C; Hupp, Joseph T.

In: Langmuir, Vol. 25, No. 5, 03.03.2009, p. 2596-2600.

Research output: Contribution to journalArticle

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