Abstract
We have successfully demonstrated a novel "pore" phase change memory cell, whose critical dimension (CD) is independent of lithography. Instead, the pore diameter is accurately defined by intentionally creating a "keyhole" with conformai deposition. Fully integrated 256kbit test chips have been fabricated in 180nm CMOS technology. We report SET times of 80ns, RESET currents less than 250μA, and accurate sub-lithographic CDs that can be less than 20% the size of the lithographically-defined diameter.
Original language | English (US) |
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Article number | 4339743 |
Pages (from-to) | 100-101 |
Number of pages | 2 |
Journal | Digest of Technical Papers - Symposium on VLSI Technology |
DOIs | |
State | Published - 2007 |
Externally published | Yes |
Event | 2007 Symposium on VLSI Technology, VLSIT 2007 - Kyoto, Japan Duration: Jun 12 2007 → Jun 14 2007 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
Keywords
- Chalcogenide
- NV memory
- PCRAM
- Pore