High-Performance Metal-Induced Laterally Crystallized Polycrystalline Silicon P-Channel Thin-Film Transistor With $\hbox{TaN/HfO}_{2}$ Gate Stack Structure

In this letter, high-performance low-temperature poly-Si p-channel thin-film transistor with metal-induced lateral- crystallization (MILC) channel layer and TaN/HfO2 gate stack is demonstrated for the first time. The devices of low threshold voltage VTH ~ 0.095 V, excellent subthreshold swing S.S. ~83 mV/dec, and high field-effect mobility muFE ~ 240 cm2/V ldr s are achieved without any defect passivation methods. These significant improvements are due to the MILC channel film and the very high gate-capacitance density provided by HfO2 gate dielectric with the effective oxide thickness of 5.12 nm.