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Polyacetylene films were doped with FeCl3 and implanted with 30 k'eV K+ ions. Physical changes to the films were examined by a series of measurements, which include the four-probe test, infrared ray absorption and 2 MeV He+ particle elastic recoil dettection and Rutherford backscattering. The chemical dopants (Fe+++ and Cl-) were redistributed after the implantation and the different species (K+. Fe+++ and Cl-ions) formed p - n junctions at the implantation depths. The implanted films exhibited desirable Ⅰ-Ⅴ characteristics, with current densities as high as 600 mA/cm- at 3V and back - to - forward ratio of current over 300. The polymer diodes kept their behavior for over 60 days. Discussions on the results were given in detail. 相似文献
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Biological materials of garlic, Wulong-tea and human hair were investigated by 14.2 MeV proton activation analysis using internal standard method. Elemental concentrations of Ca, Ti, V, Cr, Fe, Ni, Cu, Zn, Ge, Se, Sr, Cd, La and Pb in biological samples were determined under the 5×10-8-2×10-5g/g of sensitivities 相似文献
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