C_(60), also known as ftillerene or buckminsterfullerene, has a variety of applications across different fields due to its unique molecular structure. Notably, C_(60) can be utilized in a variety of applications, including photodetectors, sensors, lubricants, and coatings. Owing to its high surface area, C_(60) film is particularly well-suited for chemical and biological sensors. For sensor applications, ion beams can be utilized to introduce dangling bonds and vacancies to increase efficiency in trapping molecules. Here, the irradiation response of C_(60) films is studied as a function of fluences of of a 100 keV helium ion beam. The C_(60) film is deposited on a Mica substrate via thermal evaporation of C_(60) powders. The as-deposited film exhibits a periodic topographical pattern formation, which was analyzed using atomic force microscopy. Upon ion irradiation, Raman spectra show an increase in the D/G mode intensity with increased fluences, consistent with previous studies on low-dimensional carbon systems. The D/G mode intensity, however, begins to decrease when damage levels are high enough to reduce the number of six-fold rings, corresponding to amorphization. The threshold amorphization fluence was measured.
Ion irradiationC_(60)RamanAmorphization
Rijul R. Chauhan、Valerie Tsvetkova、SeungSu Kim、Tania Kumar、Zhihan Hu、Michael Nastasi、Lin Shao
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Department of Nuclear Engineering, Texas A&M University, College Station, TX 77845, USA
NETL
NSTL
Elsevier
