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Carrier transport mechanisms of organic bistable devices fabricated utilizing colloidal ZnO quantum dot-polymethylmethacrylate polymer nanocomposites
- Authors
- Son, Dong Ick; You, Chan Ho; Jung, Jae Hun; Kim, Tae Whan
- Issue Date
- Jul-2010
- Publisher
- American Institute of Physics
- Keywords
- carrier mobility; colloids; II-VI semiconductors; indium compounds; nanocomposites; organic-inorganic hybrid materials; polymers; random-access storage; semiconductor quantum dots; spin coating; tin compounds; zinc compounds
- Citation
- Applied Physics Letters, v.97, no.1, pp 1 - 3
- Pages
- 3
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Applied Physics Letters
- Volume
- 97
- Number
- 1
- Start Page
- 1
- End Page
- 3
- ISSN
- 0003-6951
1077-3118
- Abstract
- Organic bistable devices (OBDs) fabricated utilizing ZnO quantum dots (QDs) embedded in a poly(methyl methacrylate) (PMMA) layer were fabricated by using a spin-coating technique. Transmission electron microscopy images revealed that 5-nm-diameter ZnO QDs were formed inside the PMMA polymer layer. Current-voltage (I-V) measurements on Al/ZnO QDs embedded in PMMA layer/indium-tin-oxide devices at 300 K showed electrical bistability. The maximum ON/OFF ratio of the current bistability for the OBDs was as large as 4x10(4). Carrier transport mechanisms for the OBDs are described by using several models to fit the experimental I-V data.
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