8 April 1996 Increase of electrical conductivity of solid C60 films by excimer laser radiation
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Abstract
After being irradiated in air by XeCl (308 nm) excimer laser, the electrical conductivity of solid thin-film C60 has been improved by more than six orders of magnitudes. The products resulting from laser irradiation of C60 films have been investigated by Raman scattering and the onset of conductivity can be attributed to laser-induced oxygenation and disintegration of fullerene. Irradiated by approximately 40 ns laser pulses with different fluence, the products with different microstructure were observed. At lower fluence, the Raman features of microcrystalline graphite and fullerene polymer were observed. At a fluence just below the ablation threshold (36 mJ/cm2), the fullerene molecules in film were disintegrated completely and transformed to amorphous graphite.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Qihong Lou, Dong Ning, Jinxing Dong, Yunrong Wei, "Increase of electrical conductivity of solid C60 films by excimer laser radiation", Proc. SPIE 2703, Lasers as Tools for Manufacturing of Durable Goods and Microelectronics, (8 April 1996); doi: 10.1117/12.237761; https://doi.org/10.1117/12.237761
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KEYWORDS
Laser ablation

Fullerenes

Excimer lasers

Raman spectroscopy

Solids

Absorption

Electrodes

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