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標題: Thermally Stable TiVCrZrHf Nitride Films as Diffusion Barriers in Copper Metallization
作者: Liang, S.C.
Tsai, D.C.
Chang, Z.C.
Lin, T.N.
Shiao, M.H.
Shieu, F.S.
關鍵字: cu interconnects;resistance;layer
Project: Electrochemical and Solid State Letters
期刊/報告no:: Electrochemical and Solid State Letters, Volume 15, Issue 1, Page(s) H5-H8.
In the present study, 10 nm-thick TiVCrZrHf nitride films were developed as diffusion barrier materials for Cu interconnects. The TiVCrZrHf nitride films were prepared at room temperature via reactive magnetron sputtering using a TiVCrZrHf target. Barrier properties were examined by annealing in vacuum at elevated temperatures for 60 min. The results show that the (TiVCrZrHf) N(0.4) and (TiVCrZrHf)N films prevent the reaction between Cu and Si before failure at 600 and 800 degrees C, respectively. The excellent thermal and structural stabilities of nitride for preventing silicide formation are assumed to originate from the incorporation of different-sized elements. (C) 2011 The Electrochemical Society. [DOI: 10.1149/2.012201esl] All rights reserved.
ISSN: 1099-0062
DOI: 10.1149/2.012201esl
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