Abstract
We report the properties of a MANAS (Metal/ Al2O 3/Nitride/Al2O3/Si) charge-trap memory cell structure, in which both the tunnel and the blocking dielectrics are made of high-quality Al2O3 deposited by the molecular-atomicdeposition (MAD) technique. Compared with state-of-the-art MANOS (Metal/Al2O3/Nitride/ SiO2/Si) and its derivatives, the MANAS structure features the following: 1) low-voltage/ high-speed operation; 2) fabrication simplicity; and 3) hightemperature retention up to 250°C. These superb features of the MANAS memory cell structure can be attributed to the nearly trap-free nature of the MAD-Al2O3, as well as its relatively high conduction band offset and low valence band offset.
Original language | English |
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Article number | 5597916 |
Pages (from-to) | 1443-1445 |
Number of pages | 3 |
Journal | IEEE Electron Device Letters |
Volume | 31 |
Issue number | 12 |
DOIs | |
State | Published - Dec 2010 |
Externally published | Yes |
Keywords
- Aluminum oxide
- MANAS
- TANOS
- charge-trap memory
- high-temperature retention
- nonvolatile memory
- tunnel dielectric