Dewetting during the crystal growth of (Cd,Zn)Te:In under microgravity (Articolo in rivista)

Type
Label
  • Dewetting during the crystal growth of (Cd,Zn)Te:In under microgravity (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • Sylla L.; Fauler A.; Fiederle M.; Duffar T.; Dieguez E.; Zanotti L.; Zappettini A.; Roosen G. (2009)
    Dewetting during the crystal growth of (Cd,Zn)Te:In under microgravity
    in IEEE conference record - Nuclear Science Symposium & Medical Imaging Conference.
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sylla L.; Fauler A.; Fiederle M.; Duffar T.; Dieguez E.; Zanotti L.; Zappettini A.; Roosen G. (literal)
Pagina inizio
  • 4925 (literal)
Pagina fine
  • 4928 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 2008 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (2008 NSS/MIC), VOLS 1-9 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • In: Proceedings of the Ieee, vol. NSS08 pp. 122 - 125. 2008 IEEE Nuclear Science Symposium Conference Record - Dresden, Germany (19-25 Oct. 2008). IEEE, 2008. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Freiburger Materialforschtmgszentrum FMF, Albert-Ludwigs-Universitat, D-79104 Freiburg, Germany, SIMAP-EPM, 1340 rue de la Piscine, PHELMA, BP 75, 38402 Saint Martin d'Heres, France, Departamento de Fisica de Materials Universidad Autonoma de Madrid, E-28034 Madrid, Spain, CNR-IMEM, Parma, CNRS, Laboratoire Charles Fabry de l'Institut d'Optique, F-91403 Orsay, France (literal)
Titolo
  • Dewetting during the crystal growth of (Cd,Zn)Te:In under microgravity (literal)
Abstract
  • The phenomenon of \"Dewetting\" associated with the Vertical Bridgman (VB) crystal growth technique leads to the growth of a crystal without contact with the crucible. One dramatic consequence of this modified VB process is the reduction of structural defects within the crystal. It has been observed in several microgravity experiments for different semiconductor crystals. This work is concentrated on the growth of high resistivity (Cd,Zn)Te:ln (CZT) crystals by achieving the phenomenon of dewetting under microgravity condition and its application in the processing of CZT detectors. Two CdO.9ZnO.lTe:ln crystals were grown in space on the Russian FOTON satellite in the POLIZON-M facility in September 2007 (mission M3). At the end of the preliminary melting phase of one crystal, a Rotating Magnetic Field (RMF) was applied in order to reduce the typical tellurium clusters within the melt before the pulling. The other crystal was superheated with 20 K above the melting point before the pulling. A third reference crystal has been grown on the ground in similar thermal conditions. Profiles measurements of the space grown crystals surface gave the evidence of a successful dewetting during the crystal growth. Characterization methods such as IR microscopy and CoReMa have been performed on the three crystals. CZT detectors have been processed from the grown part of the different crystals. The influence of the dewetting on the material quality and the detector properties completes the study. (literal)
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