Yang W.,Shaanxi University of Science and Technology |
Yang W.,IRICO Group Corporation |
Tang H.-K.,Shaanxi University of Science and Technology |
Liu Q.-L.,IRICO Group Corporation |
Cai B.-J.,IRICO Group Corporation
Gongneng Cailiao yu Qijian Xuebao/Journal of Functional Materials and Devices | Year: 2010
Tb-doped (Y, Gd)BO 3: Tb 3+ green-phosphor with small size, high crystallinity and good photoluminescence intensity was prepared by co-precipitation method. Ultrafine precursor powders were obtained by controlling the solution concentration. The effects of the concentration, flux and calcinations temperature on the phosphor were discussed. The green-phosphor was characterized by (X-ray) diffraction, SEM, particle size determination and photoluminescence. In addition, the characteristics of the green-phosphor were compared with those of a commercial product. The phosphor particles prepared at 1100°C have the best(characteristics,) such as completely spherical shape, fine particle size, no-aggregation, and the product prepared by solid state reaction. The phosphor has stronger ability to resist vacuum ultraviolet eradiate, and (luminescence) intensity of the phosphor is higher than the commercial product.
Li F.,Xi'an University of Science and Technology |
Li F.,Nanjing University of Aeronautics and Astronautics |
Yang Y.,Nanjing University of Aeronautics and Astronautics |
Song Y.,Xi'an University of Science and Technology |
And 3 more authors.
Journal of Spectroscopy | Year: 2013
CaF2 coatings on the surface of BaMgAl10O 17:Eu (BAM) were prepared by a sol-gel process, and the optical properties and antithermal degradation properties were analyzed by photoluminescence spectra recorded under 254 nm and 147 nm excitation. The results indicate that BAM particles were successfully coated with CaF 2 and CaF2 coatings show an interesting property to enhance the blue emission intensity of BAM. The optimum antithermal degradation properties were obtained at the weight ratio 0.4 wt% under 254 nm excitation and 0.3 wt% under 147 nm excitation, respectively. © 2013 Feng Li et al.
Jiang C.-H.,IRICO Group Corporation |
Yu M.,IRICO Group Corporation |
Liu W.-X.,IRICO Group Corporation |
Wang X.,IRICO Group Corporation |
And 2 more authors.
ICMREE2011 - Proceedings 2011 International Conference on Materials for Renewable Energy and Environment | Year: 2011
The up scaling of low-cost anatase nanocrystalline TiO2 powders have been prepared by quick-low-temperature hydrothermal method using industrial grade TiOSO4, CO(NH2)2 as starting materials. The reaction was finished under the condition of 160 for 2 hours. The grain size of the synthesized powders is estimated as 11 nm by Scherrer's method and TEM photo. The specific surface area is 170m2/g by BET method. The influences of the TiO2 particles and the photovoltaic performance of large size DSSC were investigated. At last, under standard test condition, active area energy conversion efficiency of 4.97% was achieved in 10cm×10cm size DSSC device at low cost. A module composed of sixty large size cells was prepared. © 2011 IEEE.
Yang W.-G.,University of Science and Technology Beijing |
Wan F.-R.,University of Science and Technology Beijing |
Wan F.-R.,Beijing Key Laboratory of Advanced Energy Material and Technology |
Jiang C.-H.,IRICO Group Corporation |
Chen S.-W.,University of Science and Technology Beijing
Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing | Year: 2010
The effect of polyethylenimine (PEI) concentration on the morphology, wire density and size of ZnO nanowire arrays was systematically studied by X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscope (SEM). The photovoltaic properties of ZnO nanowire array films were also investigated. It is demonstrated that, for a ZnO nanowire array film obtained from 7.3mmol·L-1 PEI, an energy conversion efficiency of about 0.66% was obtained, which is the highest for ZnO nanowire array films prepared with different PEI concentrations from 3.2mmol·L-1 to 9.3mmol·L-1.