The Influence of Surfaces and Deposition Processes on Pt Structure and Properties

Sidney Coombs, Arrelaine Dameron, Chaiwat Engtrakul, Svitlana Pylypenko, Jinsuk Lee, Tim S. Olson, Chris Bochert, Thomas Gennett, Lin Simpson, Bryan Pivovar, Huyen N. Dinh

Research output: Contribution to journalArticlepeer-review

1 Scopus Citations


Transparent conductive oxides (TCOs), In-Zn-O (IZO) and Ga-Zn-O (GZO), on glass are used as model substrates to study the effect of surface treatments and deposition processes on Pt growth and nanostructure. The TCO type and surface treatments appear to affect Pt nucleation and growth. Ar and O2 plasma surface treatments significantly lowered the contact angle of water measured on TCOs compared to trimethylaluminum surface treatment and samples without surface treatment. Annealing TCO samples in oxygen resulted in lower IZO conductivity and higher contact angle; while annealing in vacuum or hydrogen resulted in increased carbon on the surface, which appears to be related to higher water contact angles and higher conductivity. Higher amounts of zinc and carbon (probably due to contamination from the annealing chamber) on the IZO surface seem to correlate with lower water contact angles and lower conductivity.

Original languageAmerican English
Pages (from-to)221-228
Number of pages8
JournalECS Transactions
Issue number1 PART 1
StatePublished - 2010
Event10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting - Las Vegas, NV, United States
Duration: 10 Oct 201015 Oct 2010

NREL Publication Number

  • NREL/JA-5600-48742


  • durability
  • fuel cells
  • performance


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