In this work, yttrium-doped zinc oxide （YZO） nanopowder was synthesized via hydrothermal precipitation- method. The microstructure and optical properties of yttrium-doped zinc oxide nanopowder were characterized, wh...In this work, yttrium-doped zinc oxide （YZO） nanopowder was synthesized via hydrothermal precipitation- method. The microstructure and optical properties of yttrium-doped zinc oxide nanopowder were characterized, which confirmed the well-crystalline wurtzite hexagonal phase of ZnO. The yttrium- doped zinc oxide nanopowder grains formed the nanobolts of -400 nm in length and -900 nm in width. High resolution-transmission electron microscopy （HR-TEM） of the nanobolts revealed uniform lattice fringes and no visible faults and/or distortions. X-ray photoelectron spectroscopy （XPS） analysis con- firmed the presence of yttrium in the zinc oxide lattice, proving the contribution of yttrium on the microstructural and optical properties of the material. A strong ultra violet （UV） emission peak of the YZO exhibited a red shift compared to pure zinc oxide, which was ascribed to the defects and the for- mation of a shallow energy level caused bv the incorporation of yttrium.展开更多
基金supported by the Basic Science Research Program(NRF-2013R1A1A2059900)funded by the Korean government of Ministry of Education(MoE)
文摘In this work, yttrium-doped zinc oxide （YZO） nanopowder was synthesized via hydrothermal precipitation- method. The microstructure and optical properties of yttrium-doped zinc oxide nanopowder were characterized, which confirmed the well-crystalline wurtzite hexagonal phase of ZnO. The yttrium- doped zinc oxide nanopowder grains formed the nanobolts of -400 nm in length and -900 nm in width. High resolution-transmission electron microscopy （HR-TEM） of the nanobolts revealed uniform lattice fringes and no visible faults and/or distortions. X-ray photoelectron spectroscopy （XPS） analysis con- firmed the presence of yttrium in the zinc oxide lattice, proving the contribution of yttrium on the microstructural and optical properties of the material. A strong ultra violet （UV） emission peak of the YZO exhibited a red shift compared to pure zinc oxide, which was ascribed to the defects and the for- mation of a shallow energy level caused bv the incorporation of yttrium.
