High-$κ$ field-effect transistor with copper-phthalocyanine

Details High-$κ$ field-effect transistor with copper-phthalocyanine High-$κ$ field-effect transistor with copper-phthalocyanine

2011-03-21

arxiv.org/abs/1103.4042v1

Physics

Condensed Matter

Materials Science

9 pages, 6 figures

Scientific paper

The use of SrTiO$_3$ dielectrics as high-permittivity insulator in organic thin film field effect transistors (FET) is evaluated. Field-effect transistors with sputtered SrTiO$_3$ and copper-phthalocyanine (CuPc) as semiconducting layer were fabricated. The device preparation was performed in-situ in an ultra high vacuum chamber system. The dielectric in the transistors had a permittivity of up to 200 which led to low driving voltages of 3 V. The field effect transistors were p-type and reached mobilities of about $\mu = 1.5\times 10^{-3}$ cm$^2$/Vs and an on/off ratio of $10^3$. These properties are compared to devices based on other dielectric materials.

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