Published April 1, 2013 | Version v1
Journal article Metadata-only

Laser induced photoluminescence from Ge28Se60Sb12 chalcogenide nano colloids

Creators

  • 1. School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam-686560 (India)
  • 2. International School of Photonics, Cochin University of Science and Technology, Cochin 689110 (India)

Description

We report the observation of two-photon induced photoluminescence from Ge28Se60Sb12 nano colloid solutions using frequency doubled Nd:YAG laser. Quadratic emission intensity dependence verifies the two photon absorption for the observed luminescence at an excitation of 532 nm. The optical band gap of the material is found to be tunable depending on the cluster size of the nano colloids. The cluster formation and the dependence of the cluster size with concentration were confirmed by the SEM analysis. Confocal imaging was done to confirm the emission from the clusters in the nano colloid solutions

Availability note (English)

Available from http://dx.doi.org/10.1016/j.physb.2012.12.002

Additional details

Identifiers

DOI
10.1016/j.physb.2012.12.002;
PII
S0921-4526(12)01042-3;

Publishing Information

Journal Title
Physica. B, Condensed Matter
Journal Volume
414
Journal Page Range
p. 12-15
ISSN
0921-4526
CODEN
PHYBE3

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45056750
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
ABSORPTION; COLLOIDS; EXCITATION; NEODYMIUM LASERS; OPTICAL PROPERTIES; PHOTOLUMINESCENCE; PHOTONS; SCANNING ELECTRON MICROSCOPY; SOLUTIONS
Descriptors DEC
BOSONS; DISPERSIONS; ELECTRON MICROSCOPY; ELEMENTARY PARTICLES; EMISSION; ENERGY-LEVEL TRANSITIONS; HOMOGENEOUS MIXTURES; LASERS; LUMINESCENCE; MASSLESS PARTICLES; MICROSCOPY; MIXTURES; PHOTON EMISSION; PHYSICAL PROPERTIES; SOLID STATE LASERS; SORPTION

Optional Information

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