论文信息 - Energy levels of charge traps in polyethylene terephthalate films

Energy levels of charge traps in polyethylene terephthalate films

Photo-stimulated discharge (PSD) spectroscopy of polyethylene terephthalate (PETP) films charged through contacting electrodes was performed in order to investigate the mechanism(s) of charge storage and to determine trap depths. The samples were irradiated in vacuum with monochromatic light (photon energies of 3 - 6.2 eV) at constant temperature. The laser-intensity modulation method (LIMM) was used to determine the polarization and the space-charge distribution in the sample. Experimental results indicate the presence of one energy level at 4.1 eV and possibly a second energy level at 5.2 eV (300 and 240 nm, respectively).

R. Gerhard-Multhaupt | A. Mellinger | F.C. Gonzalez

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