Title
Radiation effects in nitride read-only memories
Abstract
We report on the influence of different types of radiation on the nitride read-only memories (NROM (R)). The memory cells were irradiated by light ions (Boron). X-rays and gamma-rays. Memory transistor parameters, such as threshold voltage and subthreshold drain leakage were studied as a function of the accumulated radiation dose and compared to the as-programmed (-erased) devices parameters. Their time evolution was registered in the range from few hours up to 5 months after the irradiation. The NROM cells showed good radiation robustness up to high accumulated doses. Sufficient program margin (difference of threshold voltage in the programmed state and the read-out voltage level) remained after gamma or X irradiation for absorbed doses exceeding 50 krad(Si) and 100 krad(Si), respectively. For Boron irradiation, the programmed devices remained stable up to the fluence of 10(11) ions/cm(2) (equivalent to 1 Mrad(Si) of TID tolerance). (C) 2010 Elsevier Ltd. All rights reserved.
Year
DOI
Venue
2010
10.1016/j.microrel.2010.07.068
MICROELECTRONICS RELIABILITY
Keywords
Field
DocType
read only memory,threshold voltage,radiation dose
X-ray,Leakage (electronics),Nitride,Irradiation,Chemistry,Electronic engineering,Subthreshold conduction,Threshold voltage,Radiation,Radiation effect
Journal
Volume
Issue
ISSN
50
SP9-11
0026-2714
Citations 
PageRank 
References 
0
0.34
0
Authors
13
Name
Order
Citations
PageRank
S. Libertino101.35
D. Corso200.34
G. Murè300.34
A. Marino400.34
F. Palumbo553.72
F. Principato621.43
G. Cannella700.34
T. Schillaci800.34
S. Giarusso900.34
F. Celi1000.34
M. Lisiansky1100.68
Y. Roizin1200.34
S. Lombardo1361.76