title: Deep level transient spectroscopy studies of n-type ZnO single crystals grown by different techniques.
abstract: In the present study single-crystalline ZnO samples grown from the vapor phase, the melt, and a high-temperature aqueous solution (hydrothermal growth) are investigated before and after hydrogen plasma treatments, by means of deep level transient spectroscopy (DLTS) and high-resolution Laplace DLTS. Dominant DLTS peaks are found to appear in the range of 120-350 K for all materials. The DLTS spectra depend on the procedure of growth of the ZnO. The thermal stabilities of the defects in an oxygen atmosphere and in an oxygen-lean atmosphere are analyzed. The origin of the DLTS peaks is discussed.
authors.affiliation: Technische Universität Dresden, 01062 Dresden, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Scheffler
authors.forename: Vl
authors.initials: V
authors.lastname: Kolkovsky
authors.forename: E V
authors.initials: EV
authors.lastname: Lavrov
authors.forename: J
authors.initials: J
authors.lastname: Weber
mesh_terms: D003460:Crystallization; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D012996:Solutions; D013057:Spectrum Analysis; D013499:Surface Properties; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D012996:Solutions; D014867:Water; D015034:Zinc Oxide