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Investing the Effectiveness of Retention Performance in a Non-Volatile Floating Gate Memory Device with a Core-Shell Structure of CdSe Nanoparticles

Title
Investing the Effectiveness of Retention Performance in a Non-Volatile Floating Gate Memory Device with a Core-Shell Structure of CdSe Nanoparticles
Author
방진호
Keywords
retention; nanoparticle; core-shell structure; organic memory; pentacene
Issue Date
2016-03
Publisher
KOREAN INST METALS MATERIALS
Citation
ELECTRONIC MATERIALS LETTERS, v. 12, NO 2, Page. 276-280
Abstract
In this paper, we empirically investigate the retention performance of organic non-volatile floating gate memory devices with CdSe nanoparticles (NPs) as charge trapping elements. Core-structured CdSe NPs or core-shell-structured ZnS/CdSe NPs were mixed in PMMA and their performance in pentacene based device was compared. The NPs and self-organized thin tunneling PMMA inside the devices exhibited hysteresis by trapping hole during capacitance-voltage characterization. Despite of core-structured NPs showing a larger memory window, the retention time was too short to be adopted by an industry. By contrast core-shell structured NPs showed an improved retention time of ˃10000 seconds than core-structure NCs. Based on these results and the energy band structure, we propose the retention mechanism of each NPs. This investigation of retention performance provides a comparative and systematic study of the charging/discharging behaviors of NPs based memory devices.
URI
https://link.springer.com/article/10.1007%2Fs13391-016-5387-8http://hdl.handle.net/20.500.11754/35382
ISSN
1738-8090; 2093-6788
DOI
10.1007/s13391-016-5387-8
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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