Photoconduction in Polytetrafluoroethylene Induced by Vacuum-Ultraviolet Light
- 1 November 1982
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 21 (11R)
- https://doi.org/10.1143/jjap.21.1592
Abstract
Intrinsic photoconduction in poly tetrafluoroethylene (PTFE) and its dependence on the applied field strength and polarity are investigated in the photon energy range between 7 eV and 11.5 eV. The band gap of PTFE is evaluated from the photoconduction spectra using an Au-PTFE-Au system. The photocurrent increases instantly to a steady value after step-wise irradiation by vacuum-ultraviolet light, contrary to polyethylene, in which the photocurrents increase very slowly. The photocurrent observed with a negative bias applied to the irradiating-side electrode is much less than that under positive bias, indicating that positive carriers such as holes play the predominant role.Keywords
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