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Title: The dynamics of photoinduced defect creation in amorphous chalcogenides: The origin of the stretched exponential function

The article discusses the dynamics of photoinduced defect creations (PDC) in amorphous chalcogenides, which is described by the stretched exponential function (SEF), while the well known photodarkening (PD) and photoinduced volume expansion (PVE) are governed only by the exponential function. It is shown that the exponential distribution of the thermal activation barrier produces the SEF in PDC, suggesting that thermal energy, as well as photon energy, is incorporated in PDC mechanisms. The differences in dynamics among three major photoinduced effects (PD, PVE, and PDC) in amorphous chalcogenides are now well understood.
Authors:
 [1] ;  [2] ;  [3] ;  [2]
  1. Department of Electrical and Electronic Engineering, National University of Timor Lorosa'e, Av. Cidade de Lisboa, Dili, East Timor (Portugal)
  2. Department of General and Inorganic Chemistry, University of Pardubice, Pardubice 53002 (Czech Republic)
  3. (Japan)
Publication Date:
OSTI Identifier:
22271282
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AMORPHOUS STATE; CHALCOGENIDES; CRYSTAL DEFECTS; IRRADIATION; PHOTONS; THERMAL EXPANSION