Published March 15, 2013 | Version v1
Journal article Metadata-only

BiI3 nanoclusters in melt-grown CdI2 crystals studied by optical absorption spectroscopy

Creators

  • 1. Ivan Franko National University of Lviv, 79017 Lviv (Ukraine)
  • 2. Institute of Solid State Physics, University of Latvia, 8 Kengaraga, LV-1063 Riga (Latvia)
  • 3. Institute for Plasma Research, Bhat, Gandhinagar 382 044 (India)
  • 4. Institute Laue Langevin, 6 rue Jule Horovitz, 38042 Grenoble (France)

Description

Optical absorption spectroscopy of CdI2–BiI3 layered crystals has been performed in the temperature range of 77–300 K. The main absorption, observed in these crystals at 2.59 eV is related to quantum confined exciton absorption of bimolecular BiI3 cluster. Low energy absorption peaks at 2.38 eV, 2.06 eV and 1.94 eV can be tentatively assigned to larger clusters composed of 4, 6 or more BiI3 molecules. In ultra-thin samples of CdI2–BiI3 several bands at 2.84 eV, 3.03 eV and 3.27 eV were observed which are ascribed to higher excited states of the excitons in bimolecular BiI3 cluster

Availability note (English)

Available from http://dx.doi.org/10.1016/j.physb.2012.10.044

Additional details

Identifiers

DOI
10.1016/j.physb.2012.10.044;
PII
S0921-4526(12)00984-2;

Publishing Information

Journal Title
Physica. B, Condensed Matter
Journal Volume
413
Journal Page Range
p. 12-14
ISSN
0921-4526
CODEN
PHYBE3

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45051746
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
ABSORPTION SPECTROSCOPY; CADMIUM IODIDES; CONFINEMENT; CRYSTALS; ENERGY ABSORPTION; EV RANGE; EXCITED STATES; EXCITONS; LAYERS; MOLECULES; NANOSTRUCTURES; PEAKS; TEMPERATURE RANGE
Descriptors DEC
ABSORPTION; CADMIUM COMPOUNDS; CADMIUM HALIDES; ENERGY LEVELS; ENERGY RANGE; HALIDES; HALOGEN COMPOUNDS; IODIDES; IODINE COMPOUNDS; QUASI PARTICLES; SORPTION; SPECTROSCOPY

Optional Information

Copyright
Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.