Chinese Physics C > 2000, Vol. 24 > Issue(7): 685-690

Modifications in Optical Absorption of PET Films by High Energy Ar Ion Irradiation

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China

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Abstract：
Modifications in optical absorption of polyethylene terephthalate(PET) films induced by 35MeV/u Ar ion irradiation were studied by means of ultraviolet-visible absorption spectroscopy.A strong increase in absorbance in the ultraviolet and visible regions is observed in the irradiated samples, which is attributed to the formation of a conjugated system of carbon bonds.The effect is found to increase with increase of ion fluence and the mean electronic energy loss in the samples,but to decrease with increase in the optical wavelength.According to the measured optical absorption spectra,modifications of optical energy gap and the mean size of carbon clusters of the PET samples under irradiation are also analyzed and discussed.

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LIU ChangLong, JIN YunFan, ZHU ZhiYong, SUN YouMei, HOU MingDong, WANG YanBin, WANG ZhiGuang, ZHANG ChongHong, LIU Jie, CHEN XiaoXi and LI BaoQuan. Modifications in Optical Absorption of PET Films by High Energy Ar Ion Irradiation[J]. Chinese Physics C, 2000, 24(7): 685-690.

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Received: 1999-04-19
Revised: 1900-01-01

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Modifications in Optical Absorption of PET Films by High Energy Ar Ion Irradiation

Corresponding author:LIU ChangLong,

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China

Received Date:1999-04-19

Accepted Date:1900-01-01

Available Online:2000-07-05

Abstract:Modifications in optical absorption of polyethylene terephthalate(PET) films induced by 35MeV/u Ar ion irradiation were studied by means of ultraviolet-visible absorption spectroscopy.A strong increase in absorbance in the ultraviolet and visible regions is observed in the irradiated samples, which is attributed to the formation of a conjugated system of carbon bonds.The effect is found to increase with increase of ion fluence and the mean electronic energy loss in the samples,but to decrease with increase in the optical wavelength.According to the measured optical absorption spectra,modifications of optical energy gap and the mean size of carbon clusters of the PET samples under irradiation are also analyzed and discussed.

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Modifications in Optical Absorption of PET Films by High Energy Ar Ion Irradiation

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