Integration of SiOC air gaps in copper interconnects

Autor: Maurice Rivoire, C. Monget, L.G. Gosset, N. Casanova, J. C. Oberlin, M. Broekaart, P. Brun, Joaquim Torres, Vincent Arnal
Rok vydání: 2003
Předmět:
Zdroj: Microelectronic Engineering. 70:274-279
ISSN: 0167-9317
Popis: The formation of air gaps by means of a non-conformal chemical vapor deposition (CVD) on patterned wafers was successfully demonstrated using SiOC (K=2.9) as inter-level metal dielectric. This paper presents the results on physical characterization and electrical performance evaluation of integrated SiOC air gaps in a three-metal level Cu/SiOC interconnect module. The influence of the air gaps shape on parasitic coupling capacitance between copper lines was also discussed in accordance with mask design rules and processing steps.
Databáze: OpenAIRE