Effect of Nitrogen Plasma Treatment on Electrical Characteristics for Pd Nanocrystals in Nonvolatile Memory
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概要
- 論文の詳細を見る
Pd nanocrystals (NCs) are successfully embedded in a TaN/SiO2/HfAlO/Si structure. The initial memory window increases at a higher rate with increasing fabrication temperature of Pd NCs compared with the linear variation of Pd NC density, which is related to the thermally induced neutral traps in the HfAlO film around Pd NCs. After manufacturing a TaN/SiO2/Pd NCs/HfAlO/Si/Al structure, the subsequent N2 plasma treatment is conducted at 300 °C for 3 min. The number of leakage current paths in the SiO2 blocking layer adjacent to TaN is clearly reduced, but that of leakage current paths in SiO2/HfAlO around Pd NCs is slightly increased owing to the thermal stress. The thermally induced neutral traps in the HfAlO film around the Pd NCs can be passivated by nitrogen atoms, which leads to the improvement of the final memory window for the Pd NC samples fabricated at 600–700 °C. However, the intrinsic traps in the HfAlO film play an important role in memory characteristic and the final memory window is reduced by thermal densification for the Pd NC samples fabricated at 500 °C.
- 2010-08-25
著者
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Wu Wen-fa
National Nano Device Laboratories
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Liao Ta-chuan
Department Of Electronics Engineering And Institute Of Electronics National Chiao Tung University
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Kang Tsung-kuei
Department Of Electronic Engineering Feng-chia University
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Kang Tsung-Kuei
Department of Electronic Engineering, Feng-Chia University, Taichung, Taiwan 40724, R.O.C.
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Liao Ta-Chuan
Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, Hsinchu, Taiwan 30010, R.O.C.
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Lin Cheng-li
Department of Electronic Engineering, Feng Chia University, Taichung, Taiwan 407, Republic of China
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Lin Cheng-Li
Department of Electronic Engineering, Feng-Chia University, Taichung, Taiwan 40724, R.O.C.
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Wu Wen-Fa
National Nano Device Laboratories, Hsinchu, Taiwan 30078, R.O.C.
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