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HAFNIUM TITANATE AS A HIGH-K GATE INSULATOR

机译:钛酸作为高K门绝缘子

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Hf_xTi_(1-x)O_2 films have been deposited by chemical vapor deposition. The permittivity of the film depends on the composition, but films with a permittivity of approximately 50 have been obtained. The films do not appear to undergo phase separation up to at least 1000 ℃. The interface properties and charge trapping appear to depend on composition. For films with approximately equal Hf and Ti concentration, transistor characteristics and inversion layer mobilities appear to be roughly comparable to those obtained when using pure HfO_2, however the films in this report had thick interfacial layers, which may affect the transistor properties.
机译:Hf_xTi_(1-x)O_2膜已通过化学气相沉积法沉积。膜的介电常数取决于组成,但是已经获得具有约50的介电常数的膜。薄膜在至少1000℃以下似乎不会发生相分离。界面性质和电荷俘获似乎取决于组成。对于具有近似相等的Hf和Ti浓度的薄膜,晶体管特性和反型迁移率似乎与使用纯HfO_2时所获得的那些大致可比,但是该报告中的薄膜具有较厚的界面层,这可能会影响晶体管的性能。

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