Carrier transport in flexible organic bistable devices of ZnO nanoparticles embedded in an insulating poly(methyl methacrylate) polymer layer

Title
Carrier transport in flexible organic bistable devices of ZnO nanoparticles embedded in an insulating poly(methyl methacrylate) polymer layer
Authors
손동익박동희최원국조성환김원태김태환
Keywords
Carrier transport; ZnO; PMMA; Nano particles; hybrid; organic bistable device; SCLC; TCLC
Issue Date
2009-05
Publisher
Nanotechnology
Citation
VOL 20, NO 19, 195203-195208
Abstract
The bistable effects of ZnO nanoparticles embedded in an insulating poly(methyl methacrylate) (PMMA) polymer single layer by using flexible polyethylene terephthalate (PET) substrates were investigated. Transmission electron microscopy (TEM) images revealed that ZnO nanoparticles were formed inside the PMMA polymer layer. Current–voltage (I –V ) measurement on the Al/ZnO nanoparticles embedded in an insulating PMMA polymer layer/ITO/PET structures at 300 K showed a nonvolatile electrical bistability behavior with a flat-band voltage shift due to the existence of the ZnO nanoparticles, indicative of trapping, storing, and emission of charges in the electronic states of the ZnO nanoparticles. The carrier transport mechanism of the bistable behavior for the fabricated organic bistable device (OBD) structures is described on the basis of the I –V results by analyzing the effect of space charge.
URI
http://pubs.kist.re.kr/handle/201004/35067
ISSN
0957-4484
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KIST Publication > Article
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