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Influence of molecular adsorbates on the structure of electrodeposited nanocrystalline ZnO
Author(s) -
Loewenstein T.,
Sann J.,
Neumann C.,
Meyer B. K.,
Schlettwein D.
Publication year - 2008
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.200779439
Subject(s) - nanocrystalline material , scanning electron microscope , zinc , materials science , molecule , photoluminescence , adsorption , diffraction , deposition (geology) , aqueous solution , morphology (biology) , chemical bath deposition , chemical engineering , crystallography , nanotechnology , chemistry , metallurgy , composite material , optics , organic chemistry , optoelectronics , paleontology , physics , genetics , engineering , sediment , biology
Pure ZnO or ZnO EosinY with adsorbed EosinY molecules was deposited electrochemically from aqueous zinc salt solutions on (0001)GaN and (0001)ZnO. X‐ray diffraction revealed the deposition of crystalline ZnO in all cases, with almost perfect orientation in the c ‐direction. Shifts in the peak positions observed for ZnO EosinY were explained by a lattice expansion by 3.6% in the c ‐direction caused by the strong influence of the EosinY molecules adsorbed during the growth of ZnO. Scanning electron microscopy (SEM) was used to elucidate the film morphology. Photoluminescence measurements served to determine changes in the electronic structure of these nanocrystalline materials. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)