Magnetic field influence on optical properties of Cd1−xMnxS (x = 0; 0.3) quantum dots: Photoluminescence study
Creators
- 1. Institute of Physics, University of Belgrade, P.O. Box 57, 11080 Belgrade (Serbia)
- 2. Institute of Physics, Polish Academy of Science, 02-668 Warsaw (Poland)
- 3. Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade (Serbia)
Description
Highlights: ► Photoluminescence spectra of CdS and Cd0.7Mn0.3S nanocrystals are presented. ► Magnetic field up to 5T at 1.8 K was applied. ► Surface, defect states and two Mn2+ levels are registered. ► Mn2+ ions registerd in two different crystal environments. ► MnS phases are registered in the surfaces of the sample. -- Abstract: We have synthesized CdS and Cd0.7Mn0.3S nanocrystals with diameters of about 4.5 nm. These materials have been studied using photoluminescence spectroscopy with various excitation energies in the temperature range from 1.8 to 300 K, in magnetic field up to 5T. We registered surface and defect states as well as two Mn2+ energy levels that correspond to Mn2+ ions in two different crystal environments. We proposed the scheme of energy levels and transitions that explain obtained experimental results
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jallcom.2012.11.112Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2012.11.112;
- PII
- S0925-8388(12)02096-8;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 553
- Journal Page Range
- p. 75-78
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45040936
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ABSORPTION; CADMIUM SULFIDES; CRYSTALS; ENERGY LEVELS; MAGNETIC FIELDS; MANGANESE IONS; MANGANESE SULFIDES; OPTICAL PROPERTIES; PHOTOLUMINESCENCE; QUANTUM DOTS; SPECTRA; SPECTROSCOPY; SURFACES
- Descriptors DEC
- CADMIUM COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; EMISSION; INORGANIC PHOSPHORS; IONS; LUMINESCENCE; MANGANESE COMPOUNDS; NANOSTRUCTURES; PHOSPHORS; PHOTON EMISSION; PHYSICAL PROPERTIES; SORPTION; SULFIDES; SULFUR COMPOUNDS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.