Integration of stacked capacitor module with ultra-thin ferroelectric SrBi2Ta2O9 film for high density ferroelectric random access memory applications at low voltage operation
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The crystallization route of thin SrBi2Ta2O 9 (SBT) films deposited on Pt(100 nm)/Ti(10 nm)/SiO2/Si substrate is investigated at different annealing temperatures by atomic force microscopy (AFM) and X-ray diffractometry (XRD). To evaluate the SBT film properties for low voltage operation and for high storage density (>16 MBit), SBT is deposited at different film thicknesses. Furthermore, the performance of a Pt/SBT/Pt capacitor on a barrier-/contact-layer/polysilicon-plug architecture suitable for stacked capacitor memories is investigated by transmission electron microscopy (TEM)/energy dispersive X-ray analysis (EDX) and electrical measurements. It is shown that an oxidized and highly resistive contact layer can be recovered by electrical pulses. Finally, a process solution for a successful integration of 38 nm thin SBT films into this structure is provided. Published by Eisevier B.V.
Details
Original language | English |
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Pages (from-to) | 328-334 |
Number of pages | 7 |
Journal | Thin solid films |
Volume | 473 |
Issue number | 2 |
Publication status | Published - 2005 |
Peer-reviewed | Yes |
Externally published | Yes |
External IDs
ORCID | /0000-0003-3814-0378/work/155840915 |
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Keywords
ASJC Scopus subject areas
Keywords
- Crystallization, Electrical properties and measurements, Ferroelectric properties, Strontium bismuth tantalate (SBT)