Fabrication and characterization of metal-oxide-nitride-oxynitride-polysilicon nonvolatile semiconductor memory device with silicon oxynitride ( Si O x N y ) as tunneling layer on glass
A nonvolatile semiconductor memory (NVSM) device with a metal-oxide-nitride-oxynitride-polysilicon (MONOS) structure on a rough polysilicon (poly-Si) surface was fabricated using a low-temperature process and poly-Si thin film transistor (TFT) technology on glass. For the fabrication of the NVSM dev...
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Published in | Journal of applied physics Vol. 102; no. 9; pp. 094502 - 094502-4 |
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Main Authors | , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
American Institute of Physics
01.11.2007
|
Online Access | Get full text |
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Summary: | A nonvolatile semiconductor memory (NVSM) device with a metal-oxide-nitride-oxynitride-polysilicon (MONOS) structure on a rough polysilicon (poly-Si) surface was fabricated using a low-temperature process and poly-Si thin film transistor (TFT) technology on glass. For the fabrication of the NVSM device on glass, plasma-assisted oxynitridation was carried out using nitrous oxide
(
N
2
O
)
as a reactive gas, due to the very rough surface of the poly-Si on glass annealed using an excimer laser. The ultrathin
Si
O
x
N
y
films obtained using the
N
2
O
plasma have a very uniform distribution on poly-Si and similar contents of oxygen and nitrogen in the peaks and valleys of the grains. The NVSM devices having a MONOS structure with a tunneling layer of ultrathin
Si
O
x
N
y
on glass have suitable switching and charge retention characteristics for data storage. The results demonstrate that the NVSM device made using low-temperature poly-Si TFT technology on glass reported in this paper can be used in various types of display devices. |
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ISSN: | 0021-8979 1089-7550 |
DOI: | 10.1063/1.2802201 |