Bingshe XU
,
Peide HAN
,
Jian LIANG
,
Yuan YU
,
Huiqiang BAO
,
Xuguang LIU
材料科学技术（英）
The structure of potassium hexatitanate (K¬¬2T¬6O¬13) nanowires has been investigated using both the Rietveld powder diffraction profile fitting technique and high resolution transmission electron microscopy (HRTEM) image simulations. From the Rietveld analysis it was shown that the nanowires had a monoclinic structure of the space group C2/M and the lattice parameters were a=1.5582 nm, b=0.382 nm, c=0.9112 nm. HRTEM conclusions agree with refinement results obtained from experimental XRD data. The good agreement between the experimental and simulated images confirms that the nanowires is indeed K¬¬2T¬6O¬13 nanowire.The growth axes of nanowires were mainly along the [010] direction.
关键词:
Potassium hexatitanate
,
null
,
null
,
null
Yuying HAO
,
Bingshe XU
,
Zhixiang GAO
,
Hua WANG
,
Hefeng ZHOU
,
Xuguang LIU
材料科学技术（英）
A new electroluminescent material, salicylaldehyde anil zinc (SAZ) was synthesized, which can form high quality, thermal stability, nano-scale amorphous films by vacuum evaporation. Its structure, thermal stability were characterized by infrared (IR) spectra, differential thermal analysis-thermogravimetry (DTA-TG) analysis, respectively. The optical properties of SAZ were investigated by UV absorption spectra, Photoluminescence (PL) excitation and emission spectra. The highest occupied molecular orbits (HOMO), lowest unoccupied molecular orbits (LUMO) and optical band gap were evaluated by cyclic voltammetry curve and optical absorption band edge. The electroluminescent devices using SAZ as the emissive layer emit green light with a peak wavelength at 509 nm and a brightness of about 3.1 cd/m2.
关键词:
Salicylaldehyde anil zinc
,
光学性质
,
电子能级结构
