Open AccessEffect of weak Mn doping on optical properties of ZnGeP2 single crystal grown by vertical gradient freezing method
Author(s) -
Di Yang,
Xin-Ling Cao
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/abbf80
Subject(s) - doping , x ray photoelectron spectroscopy , materials science , fourier transform infrared spectroscopy , analytical chemistry (journal) , tetragonal crystal system , manganese , single crystal , crystallite , impurity , crystallography , crystal structure , chemistry , nuclear magnetic resonance , optics , optoelectronics , physics , chromatography , organic chemistry , metallurgy
ZnGeP 2 single crystals weakly doped by manganese (Mn) were grown by vertical gradient freezing method from polycrystalline batch which was synthesized by the modified two temperature vapor phase transport method. Energy Disperse Spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier Transform Infrared Spectrometry (FTIR) were employed to characterize the doping single crystals. The un-doped and Mn doped single crystals show the same color. XRD results manifest that the obtained Mn doped ZnGeP 2 has tetragonal structure with slight lattice distortion and has no segregation. The EDS results indicate a good stoichiometry of ZnGeP 2 weakly doped with Mn. From the XPS results, the doped single crystal with no impurity phases were successfully obtained by the vertical gradient freezing method. FTIR spectra show a slight decrease in infrared transmittance of Mn doped single crystals.