Analysis of memory retention characteristics of ferroelectric field effect transistors using a simple metal-ferroelectric-metal-insulator-semiconductor structure

被引:20
作者
Ashikaga, K [1 ]
Ito, T [1 ]
机构
[1] Oki Elect Ind Co Ltd, Semicond Technol Labs, Hachioji, Tokyo 1930834, Japan
关键词
D O I
10.1063/1.369381
中图分类号
O59 [应用物理学];
学科分类号
摘要
Memory retention characteristics of metal-ferroelectric-metal-insulator-semiconductor (MFMIS) field effect transistors (FETs) were investigated in detail using a simple structure, referred to as quasi-MFMIS, in which one electrode of the metal-ferroelectric-metal (MFM) capacitor is connected to a gate electrode of a conventional metal-oxide-semiconductors (MOS) FET using an external interconnection cable. It was found that the memory window of the MFMIS FET was quickly lost (after about 1000 s) and from a comparison with simulations, this was attributed mainly to a decrease in ferroelectric polarization due to a depolarization field inevitably remaining in the ferroelectric film during memory retention. (C) 1999 American Institute of Physics. [S0021-8979(99)01210-4].
引用
收藏
页码:7471 / 7476
页数:6
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