Thermal stability and interaction between SiOF and Cu film

Yu Jane Mei*, Ting Chang Chang, Jeng Dong Sheu, Wen Kuan Yeh, Fu-Ming Pan, Chun Yen Chang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

In this work, we study the thermal stability and interaction between SiOF and Cu. Blanket SiOF films with various F concentration were deposited by PE-CVD. A dielectric constant as low as 3.2 was obtained. Copper were deposited on these SiOF and a series of post-deposition anneal were performed. Dielectric constant of SiOF was measured after deposition and again after anneal. AES and SIMS depth profile are utilized to determine the interdiffusion between Cu and SiOF under different annealing conditions. Breakdown voltage and dielectric constant were determined form C-V and I-V measurement using a MIS (Cu/SiOF/p-Si) diode. This results of leakage current measurement and flat band shift measurement suggest that the fluorine in the SiOF film will retard the Cu diffusion.

Original languageEnglish
Pages (from-to)433-439
Number of pages7
JournalMaterials Research Society Symposium - Proceedings
Volume427
DOIs
StatePublished - 1 Dec 1996
EventProceedings of the 1996 MRS Spring Symposium - San Francisco, CA, USA
Duration: 8 Apr 199611 Apr 1996

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