Interface State in Metal-Oxide-Nitride-Silicon Memories Induced by Hole Injection during Program/Erase Cycle Stress

被引:12
作者
Fujii, Shosuke [1 ]
Fujitsuka, Ryota [2 ]
Sekine, Katsuyuki [2 ]
Koyama, Masato [1 ]
Yasuda, Naoki [2 ]
机构
[1] Toshiba Co Ltd, Adv LSI Technol Lab, Yokohama, Kanagawa 2358522, Japan
[2] Toshiba Co Ltd, Semicond & Storage Prod Co, Yokohama, Kanagawa 2358522, Japan
关键词
GENERATION; CHARGE; TANOS; ERASE; NBTI;
D O I
10.1143/JJAP.51.124302
中图分类号
O59 [应用物理学];
学科分类号
摘要
The mechanism of interface-state generation in metal-oxide-nitride-silicon (MONOS) memories by program/erase (P/E) cycling was experimentally examined, using the charge measurement technique we developed that allows direct measurement of the amount of charges flowing during P/E operation. The amount of interface state was found to have a strong correlation with the amount of charges flowing during erase operation, irrespective of pulse voltage, pulse width and number of P/E cycles. It was also found that the amount of interface states generated by P/E cycling increases as hole fluence dominates erase operation. These findings suggest that hole injection from Si substrate, rather than electron detrapping from SiN layer or impact-ionized hot hole, is the main cause of the interface-state generation. (C) 2012 The Japan Society of Applied Physics
引用
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页数:4
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