Plasma Polymerization Behavior of Fluorocarbon Monomers in Low‐Pressure AF and RF Discharges

Mary Gilliam, Qingsong Yu, Hirotsugu Yasuda

Research output: Contribution to journalArticlepeer-review

Abstract

<div class="line" id="line-59"> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> The plasma polymerization behavior of fluorocarbon monomers was investigated using C </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> 3 </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> F </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> 6 </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> , C </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> 3 </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> F </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> 6 </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> O, C </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> 4 </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> F </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> 10 </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> &nbsp;and C </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> 2 </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> F </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> 4 </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> H </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> 2 </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> , which were compared to hydrocarbons such as methane and butane. The plots of the normalized thickness growth rates of plasma polymers, GR/FM, versus the energy input composite parameters,&nbsp; </span> <i style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> W </i> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> /FM, revealed the energy&hyphen;deficient and monomer&hyphen;deficient domains for each monomer, along with the critical energy input, ( </span> <i style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> W </i> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> /FM) </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 12px;'> c </span> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> , representing the transition between the two domains. The luminous gas phase in fluorocarbon discharges does not contain much polymer&hyphen;forming species and thus, the monomer&hyphen;deficient domain shifted to a much lower&nbsp; </span> <i style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> W </i> <span style='color: rgb(28, 29, 30); font-family: "Open Sans", icomoon, sans-serif; font-size: 16px;'> /FM and GR/FM values than in the case of hydrocarbon systems. For hydrocarbon systems, deposition rates were greater in RF than in AF discharges, which is opposite to the situation observed for the fluorocarbon systems. These differences were attributed to the locations of the dissociation glows and to the nature of the luminous gas phase in respect to polymer&hyphen;forming species. </span></div>
Original languageAmerican English
JournalPlasma Processes Polymers
Volume4
DOIs
StatePublished - Feb 26 2007

Keywords

  • Plasma
  • Polymerization
  • Fluorocarbon Monomers

Disciplines

  • Engineering
  • Physical Sciences and Mathematics

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