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Nonvolatile flexible organic bistable devices fabricated utilizing CdSe/ZnS nanoparticles embedded in a conducting poly N-vinylcarbazole polymer layer

Son, Dong-Ick and Kim, Ji-Hwan and Park, Dong-Hee and Choi, Won Kook and Li, Fushan and Ham, Jung Hun and Kim, Tae Whan (2008) Nonvolatile flexible organic bistable devices fabricated utilizing CdSe/ZnS nanoparticles embedded in a conducting poly N-vinylcarbazole polymer layer. NANOTECHNOLOGY, 19 (5).

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Official URL: http://www.iop.org/EJ/abstract/0957-4484/19/5/0552...

Abstract

The bistable effects of CdSe/ZnS nanoparticles embedded in a conducting poly N-vinylcarbazole (PVK) polymer layer by using flexible poly-vinylidene difluoride (PVDF) and polyethylene terephthalate (PET) substrates were investigated. Transmission electron microscopy (TEM) images revealed that CdSe/ZnS nanoparticles were formed inside the PVK polymer layer. Current-voltage (I-V) measurement on the Al/[CdSe/ZnS nanoparticles + PVK]/ITO/PVDF and Al/[CdSe/ZnS nanoparticles + PVK]/ITO/PET structures at 300 K showed a nonvolatile electrical bistability behavior with a flat-band voltage shift due to the existence of the CdSe/ZnS nanoparticles, indicative of trapping, storing and emission of charges in the electronic states of the CdSe nanoparticles. A bistable behavior for the fabricated organic bistable device (OBD) structures is described on the basis of the I-V results. These results indicate that OBDs fabricated by embedding inorganic CdSe/ZnS nanoparticles in a conducting polymer matrix on flexible substrates are prospects for potential applications in flexible nonvolatile flash memory devices.

Item Type:Article
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
Physical Science > Nanoelectronics
Material Science > Nanostructured materials
ID Code:504
Deposited By:INVALID USER
Deposited On:04 Dec 2008 12:47
Last Modified:06 Jan 2009 09:34

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