Eich, Manfred (1996)
Electrical conduction processes and high electric field poling in nonlinear optical polymers.
SPIE'S 1996 INTERNATIONAL SYMPOSIUM ON OPTICAL SCIENCE, ENGINEERING, AND INSTRUMENTATION. Denver, CO, United States (04.08.1996-09.08.1996)
doi: 10.1117/12.256160
Conference or Workshop Item, Bibliographie
Abstract
We report on electrical conduction phenomena occurring during high electric field electrode poling of side chain (chi) (2) polymers. Electric current and second harmonic intensity were measured simultaneously in poling experiments performed on samples with and without an additional inorganic poly-methyl-siloxane layer. Current densities appeared to be limited by a Bardeen-type potential barrier at the electrode/insulator interface. The field dependence of current density was found to be Schottky charge injection for medium field strengths (EPOL <EQ 100 V/micrometers ) whereas it was dominated by Fowler-Nordheim tunneling at higher poling fields. In the presence of the buffer layer, a significant suppression of tunneling was observed which leads to a reduced probability of singular breakdown events and shifted the limit of avalanche dielectric breakdown to higher internal effective poling fields.
| Item Type: | Conference or Workshop Item |
|---|---|
| Erschienen: | 1996 |
| Creators: | Eich, Manfred |
| Type of entry: | Bibliographie |
| Title: | Electrical conduction processes and high electric field poling in nonlinear optical polymers |
| Language: | English |
| Date: | 1996 |
| Place of Publication: | Bellingham, WA USA |
| Publisher: | Spie |
| Series: | SPIE (Society for Photo-Optical Instrumentation Engineers) Proceedings |
| Series Volume: | 2852 |
| Event Title: | SPIE'S 1996 INTERNATIONAL SYMPOSIUM ON OPTICAL SCIENCE, ENGINEERING, AND INSTRUMENTATION |
| Event Location: | Denver, CO, United States |
| Event Dates: | 04.08.1996-09.08.1996 |
| DOI: | 10.1117/12.256160 |
| Abstract: | We report on electrical conduction phenomena occurring during high electric field electrode poling of side chain (chi) (2) polymers. Electric current and second harmonic intensity were measured simultaneously in poling experiments performed on samples with and without an additional inorganic poly-methyl-siloxane layer. Current densities appeared to be limited by a Bardeen-type potential barrier at the electrode/insulator interface. The field dependence of current density was found to be Schottky charge injection for medium field strengths (EPOL <EQ 100 V/micrometers ) whereas it was dominated by Fowler-Nordheim tunneling at higher poling fields. In the presence of the buffer layer, a significant suppression of tunneling was observed which leads to a reduced probability of singular breakdown events and shifted the limit of avalanche dielectric breakdown to higher internal effective poling fields. |
| Divisions: | 05 Department of Physics |
| Date Deposited: | 19 Nov 2008 15:59 |
| Last Modified: | 18 Oct 2024 08:35 |
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