Quantum-dot light-emitting diodes utilizing CdSe/ZnS nanocrystals embedded in TiO(2) thin film
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- Quantum-dot light-emitting diodes utilizing CdSe/ZnS nanocrystals embedded in TiO(2) thin film
- Kang, Seung-Hee; Kumar, Ch. Kiran; Lee, Zonghoon; Kim, Kyung-Hyun; Huh, Chul; Kim, Eui-Tae
- cadmium compounds; electroluminescent devices; elemental semiconductors; II-VI semiconductors; light emitting diodes; MOCVD
- Issue Date
- AMER INST PHYSICS
- APPLIED PHYSICS LETTERS, v.93, no.19, pp.1 - 3
- Quantum-dot (QD) light-emitting diodes (LEDs) are demonstrated on Si wafers by embedding core-shell CdSe/ZnS nanocrystals in TiO(2) thin films via plasma-enhanced metallorganic chemical vapor deposition. The n-TiO(2)/QDs/p-Si LED devices show typical p-n diode current-voltage and efficient electroluminescence characteristics, which are critically affected by the removal of QD surface ligands. The TiO(2)/QDs/Si system we presented can offer promising Si-based optoelectronic and electronic device applications utilizing numerous nanocrystals synthesized by colloidal solution chemistry.
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