Published October 8, 2007 | Version v1
Journal article Metadata-only

Photon-induced formation of CdS nanocrystals in selected areas of polymer matrices

Creators

  • 1. ENEA, Department Advance Physics Technologies and New Materials, Centro Ricerche Brindisi, SS7 Appia Km 706, 72100 Brindisi (Italy)
  • 2. Institute of Electronic Structure and Laser (IESL), FORTH, 711 10 Heraklion, Crete, Greece and Physics Department, University of Crete, 71003 Heraklion, Crete (Greece)
  • 3. Institute of Electronic Structure and Laser (IESL), FORTH, 711 10 Heraklion, Crete, Greece and Chemistry Department, University of Crete, 71003 Heraklion, Crete (Greece)
  • 4. NNL-National Nanotechnology Laboratory, INFM, CNR, Via Arnesano, 73100 Lecce, Italy and IIT-Italian Institute of Technology, Via Morego 30, Genova (Italy)

Description

We demonstrate light-induced formation of semiconductor quantum dots in TOPAS registered polymer matrix with very high control of their size and their spatial localization. Irradiation with UV laser pulses of polymer films embedding Cd thiolate precursors results in the formation of cadmium sulfide nanocrystals well confined in the irradiation area, through a macroscopically nondestructive procedure for the host matrix. With increasing number of laser pulses, we accomplish the formation of nanoparticles with gradually increasing dimensions, resulting in the dynamic change of the spectra emitted by the formed nanocomposite areas. The findings are supported by x-ray diffraction and transmission electron microscopy measurements

Additional details

Identifiers

DOI
10.1063/1.2790484;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
91
Journal Issue
15
Journal Page Range
p. 153108-153108.3
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39035878
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CADMIUM SULFIDES; COMPOSITE MATERIALS; FILMS; IRRADIATION; LASERS; PARTICLES; PHOTONS; POLYMERS; PULSES; QUANTUM DOTS; SEMICONDUCTOR MATERIALS; TRANSMISSION ELECTRON MICROSCOPY; VISIBLE RADIATION; X-RAY DIFFRACTION
Descriptors DEC
BOSONS; CADMIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; ELEMENTARY PARTICLES; INORGANIC PHOSPHORS; MASSLESS PARTICLES; MATERIALS; MICROSCOPY; NANOSTRUCTURES; PHOSPHORS; RADIATIONS; SCATTERING; SULFIDES; SULFUR COMPOUNDS

Optional Information

Notes
(c) 2007 American Institute of Physics