Polyethylene terephthalate (PET) bulk film analysis using C 60 +, Au 3 +, and Au + primary ion beams

• Published in: Applied surface science Vol. 252; no. 19; pp. 6562 - 6565
• Main Authors: Conlan, X.A., Gilmore, I.S., Henderson, A., Lockyer, N.P., Vickerman, J.C.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 30.07.2006
• Subjects: Au; Au 3; C 60; Damage study; Polyethylene terephthalate; Yield; Polyethylene terephthalate; Au 3; C 60; Yield; Au; Damage study
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2006.02.068

The damage characteristics of polyethylene terephthalate (PET) have been studied under bombardment by C 60 +, Au 3 + and Au + primary ions. The observed damage cross-sections for the three ion beams are not dramatically different. The secondary ion yields however were significantly enhanced by the polyatomic primary ions where the secondary ion yield of the [M + H] + is on average 5× higher for C 60 + than Au 3 + and 8× higher for Au 3 + than Au +. Damage accumulates under Au + and Au 3 + bombardment while C 60 + bombardment shows a lack of damage accumulation throughout the depth profile of the PET thick film up to an ion dose of ∼1 × 10 15 ions cm −2. These properties of C 60 + bombardment suggest that the primary ion will be a useful molecular depth profiling tool.