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1D versus 3D quantum confinement in 1-5 nm ZnO nanoparticle agglomerations for application in charge-trapping memory devices


, : 1D versus 3D quantum confinement in 1-5 nm ZnO nanoparticle agglomerations for application in charge-trapping memory devices. Nanotechnology 27(27): 275205-275205

ZnO nanoparticles (NPs) have attracted considerable interest from industry and researchers due to their excellent properties with applications in optoelectronic devices, sunscreens, photocatalysts, sensors, biomedical sciences, etc. However, the agglomeration of NPs is considered to be a limiting factor since it can affect the desirable physical and electronic properties of the NPs. In this work, 1-5 nm ZnO NPs deposited by spin- and dip-coating techniques are studied. The electronic and physical properties of the resulting agglomerations of NPs are studied using UV-vis-NIR spectroscopy, atomic force microscopy (AFM), and transmission electron microscopy (TEM), and their application in metal-oxide-semiconductor (MOS) memory devices is analyzed. The results show that both dip- and spin-coating techniques lead to agglomerations of the NPs mostly in the horizontal direction. However, the width of the ZnO clusters is larger with dip-coating which leads to 1D quantum confinement, while the smaller ZnO clusters obtained by spin-coating enable 3D quantum confinement in ZnO. The ZnO NPs are used as the charge-trapping layer of a MOS-memory structure and the analysis of the high-frequency C-V measurements allow further understanding of the electronic properties of the ZnO agglomerations. A large memory window is achieved in both devices which confirms that ZnO NPs provide large charge-trapping density. In addition, ZnO confined in 3D allows for a larger memory window at lower operating voltages due to the Poole-Frenkel charge-emission mechanism.

US$19.90

PMID: 27232717

DOI: 10.1088/0957-4484/27/27/275205


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Liu, T.; Tan, B.; Luo, J.; Deng, L.; Xie, H., 2010: Preparation and biocompatibility evaluation of novel cartilage acellular matrix sponge. To explore the method of preparing spongy and porous scaffold materials with swine articular cartilage acellular matrix and to investigate its applicability for tissue engineered articular cartilage scaffold. Fresh swine articular cartilage was fr...

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Vogel R.; Lamster I.; Wechsler S.; Macedo B.; Hartley L.; Macedo J., 1986: Effects of ascorbate supplementation on polymorphonuclear neutrophils chemotaxis and experimental gingivitis. Journal of Dental Research 65(SPEC ISSUE): 270

Shida, H.; Ikeda, S.; Morimoto, M.; Tsuchiya, T.; Seki, T., 1972: Acid-base balance in open heart surgery using simple profound hypothermia. Kyobu Geka. Japanese Journal of Thoracic Surgery 25(5): 353-357

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Marek Szydlowska T.; Szydlowski L.; Uracz W.; Zembala M., 1987: Immunologic defects as possible causes of therapeutic failures in children with transposition of the great arteries. Recurrent and severe infections and absence of thymic shadow in X-ray examination were observed in children with the transposition of the great arteries (TGA). Among 45 children (29 boys and 16 girls) with TGA whose age ranged from 3 days to 16 ye...

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