The Ta2O5/rugged Si capacitor was shown to be remarkably reliable for mass production of high-density DRAMs. Our investigation with large scale test capacitors and full-scale 64-Mbit and 256-Mbit DRAMs confirmed that it has low leakage current, low defect density, good retention characteristics, and superior TDDB lifetime for high-density DRAMs
Published in:
Reliability Physics Symposium Proceedings, 1999. 37th Annual. 1999 IEEE International
Date of Conference: 1999