A study of hot-hole injection during programming drain disturb in flash memories

被引:21
|
作者
Ielmini, D [1 ]
Ghetti, A
Spinelli, AS
Visconti, A
机构
[1] Politecn Milan, Dipartimento Elettron & Informaz, I-20133 Milan, Italy
[2] STMicroelectronics, I-20041 Agrate Brianza, Italy
关键词
Flash memories; hot carriers; Monte Carlo (MC) modeling; reliability modeling;
D O I
10.1109/TED.2006.870280
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Program disturbs in NOR-type Flash arrays significantly degrade the tunnel oxide by hot-hole injection (HHI) induced by hand-to-hand tunneling at the drain overlap. This paper provides a comprehensive experimental and modeling analysis of HHI in Flash memories under program-disturb conditions. Carrier-separation measurements on arrays of Flash memories with contacted floating-gate (FG) allows for a direct investigation of hole-initiated impact ionization and HHI. A Monte Carlo (MC) model is used to simulate carrier multiplication and injection into the FG. After validating the MC model against experimental data for both secondary electron generation and HHI, the model is used to provide further insight into the hole-injection mechanism.
引用
收藏
页码:668 / 676
页数:9
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