Publications by authors named "Xing-Tang Zhang"
A single-crystalline ZnO nanorod array with rectangular cross-sections has been synthesized, in which the as-obtained products are a complete metastable zinc blende (ZB) phase. X-ray powder diffraction, electron microscopy, and elemental maps have been used to show that the ZB-ZnO samples have a lattice constant a = 4.580 Å, and are free from contamination by hexagonal wurtzite (HW) ZnO.
View Article and Find Full Text PDF[Influence of different sol-gel systems on the luminescence of nanocrystalline ZnO powders].
Guang Pu Xue Yu Guang Pu Fen Xi
November 2005
Article Synopsis
- ZnO nanopowders were created using sol-gel techniques with two different solvents, and their microstructure was analyzed using XRD and TEM methods.
- Both ZnO samples exhibit similar crystal structures and energy band characteristics, showing comparable photoluminescence (PL) spectra in the ultraviolet range.
- However, the visible region PL spectra differ due to the effects of the solvent polarity on the configuration and distribution of surface states in the samples.
[Influence of different sol-gel system on the luminescence of nanocrystalline ZnO powder].
Guang Pu Xue Yu Guang Pu Fen Xi
August 2005
Article Synopsis
- ZnO nanopowders were created using sol-gel techniques with two different solvents, and their microstructure was analyzed using XRD and TEM.
- Both ZnO samples exhibited similar crystal and energy band structures, along with comparable ultraviolet region photoluminescence (PL) spectra.
- However, their visible region PL spectra differed due to the varying polarity of the solvents, which affected the configuration and distribution of surface states in the samples.
[Preparation and luminescence of CeOx/ZnO nanocomposite powders].
Guang Pu Xue Yu Guang Pu Fen Xi
June 2005
CeOx/ZnO nanocomposite powders were prepared by sol-gel process. The powder samples were examined by XRD, TEM, XPS and photoluminescence (PL). PL enhancement of nanocomposite powder at 502 nm compared to pure ZnO was observed when Ce3+ were present in samples.
View Article and Find Full Text PDF[Study on the preparation of nanometer oxide SnO2 gas-sensitive material by sol-gel method].
Guang Pu Xue Yu Guang Pu Fen Xi
February 2003
Article Synopsis
- * XRD results confirmed that the SnO2 particles achieved an ideal nanosize, with the particle diameter increasing as the annealing temperature was raised.
- * Raman and UV spectra revealed that the SnO2 material had significant O-empties at low temperatures and stable absorption properties in a temperature range of 300-500 degrees C, which could improve the performance of SnO2 gas-sensitive devices.