Low-Voltage Monolayer Pentacene Transistors Fabricated on Ultrathin Crystalline Self-Assembled Monolayer Based Dielectric
In this final chapter on organic transistors, two of the issues limiting the fabrication of low-cost, high performance transistors are addressed by using concepts presented in earlier chapters. The first major hurdle is associated with wasting materials during the deposition processes. Using a thinner layer of the semiconductor (much thinner than 40 nm usually used) allows for a lower material cost. In this work, the two-dimensional growth of pentacene on crystalline OTS was utilized to fabricate monolayer thin transistors (M-TFTs), wherein the active semiconducting channel is only one monolayer in thickness. The second major issue is the very high operating voltages associated with a thick dielectric (~100 V). To resolve this issue M-TFTs were fabricated on an ultrathin (OTS) gate-dielectric; this allows for operating voltages of ~3 V or less.
KeywordsHydrolysis Quartz SiO2 Hydroxyl Silane
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