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Vibrational spectra of quantum dots formed by Langmuir–Blodgett technique
- Source :
- Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena. 28:C5E22-C5E24
- Publication Year :
- 2010
- Publisher :
- American Vacuum Society, 2010.
-
Abstract
- Phonon spectra of CdS, ZnS, PbS, CuS, Ag2S, and ZnO quantum dots formed by using the Langmuir–Blodgett technology are investigated by Raman and infrared spectroscopies. The Raman spectra of structures show peaks corresponding to the scattering by longitudinal and transverse optical (LO and TO) phonons localized in quantum dots that confirm the formation of nanocrystals. In addition to TO and LO phonon modes, the modes observed in the IR spectra between the frequency positions of LO and TO phonons are attributed to the surface optical phonons in quantum dots.
- Subjects :
- Materials science
Condensed matter physics
Infrared
Phonon
Scattering
Process Chemistry and Technology
Infrared spectroscopy
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Langmuir–Blodgett film
Molecular physics
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Condensed Matter::Materials Science
symbols.namesake
Nanocrystal
Quantum dot
Condensed Matter::Superconductivity
Materials Chemistry
symbols
Condensed Matter::Strongly Correlated Electrons
Electrical and Electronic Engineering
Raman spectroscopy
Instrumentation
Subjects
Details
- ISSN :
- 21662754 and 21662746
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena
- Accession number :
- edsair.doi...........24fa88414bfe16a7094f7da33c577e64
- Full Text :
- https://doi.org/10.1116/1.3442799