NDLI: The local energy level of polyimide

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The local energy level of polyimide

Content Provider	IEEE Xplore Digital Library
Author	Li, Y. Liu, Z. Ren, J.
Copyright Year	1988
Description	Author affiliation: Dept. of Electr. Eng., Xi'an Jiatong Univ., China (Li, Y.; Liu, Z.; Ren, J.)
Abstract	Photoconduction and photoabsorption experiments on polyimide films with different imidities and crosslinking densities are described. Initially the energy gap was found to be larger than 10.35 eV, and the thresholds of photoinjection for gold and aluminium electrodes were 1.65 eV and 0.9 eV, respectively. By changing the molecular morphology of the sample, changing the polarity of the radiated electrode, and precharging the sample under high voltage, it was shown that there are many kinds of local energy levels with different energy levels in the forbidden band. Local levels were found to be closely related to the chemical and physical morphology of the material, among which the level originating from the imide group is the deepest level and acts as an electron donor. The density of the remaining levels decreases with the increase of imidity and crosslinking density.
Starting Page	367
Ending Page	371
File Size	360414
Page Count	5
File Format	PDF
DOI	10.1109/ICPADM.1988.38410
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-09-12
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Energy states Polyimides Electrodes Morphology Photoconductivity Gold Aluminum Voltage Chemicals Electrons
Content Type	Text
Resource Type	Article

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