Optical investigation of CdS quantum dots in Langmuir-Blodgett films
| Autor: | Alexander G. Milekhin, S.M Repinsky, Marion Friedrich, Dietrich R. T. Zahn, Larisa L. Sveshnikova |
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| Rok vydání: | 1999 |
| Předmět: |
business.industry
Chemistry Phonon Analytical chemistry Infrared spectroscopy General Chemistry Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Langmuir–Blodgett film Condensed Matter::Materials Science symbols.namesake Average size Quantum dot Molecular vibration symbols Astrophysics::Solar and Stellar Astrophysics Optoelectronics General Materials Science Longitudinal optical business Raman spectroscopy |
| Zdroj: | Applied Physics A: Materials Science & Processing. 69:97-100 |
| ISSN: | 1432-0630 0947-8396 |
| DOI: | 10.1007/s003390050978 |
| Popis: | Structures with CdS quantum dots produced by the Langmuir–Blodgett (LB) technique were investigated by Raman, IR, and UV spectroscopies. The confinement effect of longitudinal optical (LO) phonons in CdS quantum dots was investigated by Raman spectroscopy. Surface vibrational modes of CdS quantum dots were observed in IR spectra. It was shown experimentally that the frequency of the surface vibrational modes depends on the properties of the surrounding media. An average size of CdS quantum dots of about 3–6.4 nm was obtained from the analysis of UV measurements. |
| Databáze: | OpenAIRE |
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