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Structural characterization of H plasma‐doped ZnO single crystals by positron annihilation spectroscopies
Author(s) -
Anwand Wolfgang,
Brauer Gerhard,
Cowan Thomas E.,
Grambole Dieter,
Skorupa Wolfgang,
Čížek Jakub,
Kuriplach Jan,
Procházka Ivan,
Egger Werner,
Sperr Peter
Publication year - 2010
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200925609
Subject(s) - positron annihilation , materials science , plasma , annihilation , characterization (materials science) , doping , positron , hydrogen , analytical chemistry (journal) , crystallography , radiochemistry , chemistry , nanotechnology , optoelectronics , nuclear physics , physics , organic chemistry , chromatography , electron
Nominally undoped, hydrothermally grown ZnO single crystals have been investigated before and after exposure to remote H plasma. Structural characterizations have been made by various positron annihilation spectroscopies (continuous and pulsed slow positron beams, conventional lifetime). The content of bound hydrogen (H‐b) before and after the remote H plasma treatment at the polished side of the crystals was determined at depths of 100 and 600 nm, respectively, using nuclear reaction analysis. At a depth of 100 nm, H‐b increased from (11.8 ± 2.5) to (48.7 ± 7.6) × 10 19 cm −3 after remote H plasma treatment, whereas at 600 nm no change in H‐b was observed.