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The charge carrier trap energy level is an important parameter that will affect the electrical and optical properties of insulating and semiconducting materials. Depending on the characterizing methods, it has a remarkable difference. The trap energy levels of two kinds of polyimide films, original (100 HN) and corona-resistant (100 CR) ones produced by Dupont, are estimated by depolarization current,...
Thermally stimulated current (TSC) is developed and a new method for direct determination of trap level distribution in polymer film is proposed. In this method, a new function is defined to weight the contribution of a trap level to the current at any temperature. The demarcation energy is used to study the trap empty process. Analysis shows that only electrons with trap levels very close to the...
Photo-stimulated discharge (PSD) spectroscopy of polyester (PET), polypropylene (PP), polyimide (PI) of DuPont charged by either corona discharge or contact electrode were performed with self-made PSD measurement system in order to investigate the space charge traps of the polymers. The samples were irradiated with new type of continuously tunable wavelength laser based on the optical parametric oscillator...
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