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Oswald Ripening of Facetted Self‐Assembled PbSe Quantum Dots during Annealing
Author(s) -
Raab A.,
Springholz G.
Publication year - 2001
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200103)224:2<509::aid-pssb509>3.0.co;2-j
Subject(s) - quantum dot , annealing (glass) , ostwald ripening , chemical physics , quantum annealing , materials science , quantum , condensed matter physics , nanotechnology , chemistry , physics , quantum mechanics , composite material , quantum computer
The thermal stability of facetted self‐assembled PbSe quantum dots during annealing is investigated. With increasing annealing time the dot density is found to decrease rapidly with a simultaneous increase of the average dot volume. This behavior is well described by Oswald ripening under interface reaction limited mass transfer conditions. Therefore, the islands formed during growth do not represent an equilibrium structure.