Improvements of ozone surface treatment on the electrical characteristics and reliability in HfO2 gate stacks

Shih Chang Chen*, Yung Yu Chen, Yu Tzu Chang, Jen Chung Lou, Kon Tsu Kin, Chao-Hsin Chien

*此作品的通信作者

    研究成果: Article同行評審

    8 引文 斯高帕斯(Scopus)

    摘要

    In this study, we improved the interfacial properties of high-κ gate stacks with the surface treatment of ozonated water prior to deposition of hafnium oxide (HfO2). We demonstrated that the Ozone-oxide improved the electrical properties of the HfO2 gate stack interface in terms of its smoother interface, lower leakage current density, narrower hysteresis width, superior charge trapping effect, and reliability. From these experimental results, we believe that treatment with ozone is an efficient method for the preparation of high-quality interfaces between HfO2 and silicon surfaces.

    原文English
    頁(從 - 到)1898-1901
    頁數4
    期刊Microelectronic Engineering
    84
    發行號9-10
    DOIs
    出版狀態Published - 9月 2007

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