Using different work function nanocrystal materials to improve the retention characteristics of nonvolatile memory devices |
| |
Authors: | Yingtao Li |
| |
Affiliation: | Institute of Microelectronics, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China |
| |
Abstract: | Recently, nanocrystal nonvolatile memory (NVM) devices have attracted great research interest. Taking into account the effect of work function to account for the better retention characteristics for nanocrystals with larger work function, utilizing different work functions Au, W and Si as floating gates is proposed and comparatively studied in this paper. It was found that Au nanocrystals have better retention characteristic than W and Si. The good retention characteristic of the Au nanocrystal device is due to the larger work function and it is difficult for electrons captured by Au nanocrystal to escape from them. So, the retention characteristic of the device can be improved by using larger work function nanocrystal materials. |
| |
Keywords: | Nanocrystal memory Work function Floating gate Retention characteristic |
本文献已被 ScienceDirect 等数据库收录! |
|