Dielectric anti-reflection coating application in a 0.175 μm dual-damascene process

Autor: X.J. Ning, G.Y. Lee, D.M. Dobuzinsky, Z.G. Lu, G. Costrini
Rok vydání: 2002
Předmět:
Zdroj: Proceedings of the IEEE 1998 International Interconnect Technology Conference (Cat. No.98EX102).
Popis: Various dielectric anti-reflection coatings (DARCs) were evaluated using 0.175 /spl mu/m dual-damascene structures to examine the lithography process window and integration capability. Double-DARC layers have been developed with the optimum refractive indices and thickness, based on reflectance simulations and measurements, to provide better critical dimension (CD) control as compared to organic ARC and single-DARC layer applications. The integration scheme using a double-DARC layer provides substantial benefit for 0.175 /spl mu/m metallization.
Databáze: OpenAIRE