Zobrazeno 1 - 10
of 2 992
pro vyhledávání: '"Activator (phosphor)"'
Publikováno v:
Journal of Rare Earths. 40:1181-1186
Rare earth (RE) pentaborates, both α- and β-polymorphs, are good candidates for photoluminescent hosts suitable for various RE activators. Ce3+ acts not only as an activator itself, but also as a sensitizer to other rare earth activators, like in t
Publikováno v:
Canadian Journal of Civil Engineering. 49:73-82
Use of ordinary portland cement contributes to environmental deterioration by releasing enormous quantities of CO2. To reduce use of cement, this research focuses on preparation of solely ground granulated blast-furnace-slag-based geopolymer binder,
Publikováno v:
Ceramics International. 48:278-284
Four Li–Al–Si–O-based ceramic compounds with varying Si to Li ratios were synthesized via a high-temperature reaction route and characterized by X-Ray diffraction, scanning electron microscopy, and photoluminescence techniques. Eu was used as a
Publikováno v:
Journal of Materials Science: Materials in Electronics. 33:105-114
By employing Polyol method, Tb3+ and Eu3+ co-doped LaAlO3 phosphors have been synthesized and the photoluminescence (PL), lifetime characteristics were investigated. All the X-ray diffraction peaks of the phosphors were consistent with the reported c
Autor:
Dewu Wu, Quansheng Wu, Jianyan Ding, Jiaying Chen, Mengting Chen, Juxiang Zhang, Jiangcong Zhou
Publikováno v:
Ceramics International. 47:31940-31947
The site occupation engineering of activators in the phosphor directly affects its luminescence properties; thus, revealing the relationship between the site occupation and the activator luminescence is of great significance. In this work, a high eff
Autor:
Rongfei Wei, Fumin Lu, Xiusha Peng, Haihong Zheng, Xing Zhang, Fangfang Hu, Jiaxuan Hu, Hai Guo
Publikováno v:
Ceramics International. 47:32290-32296
Improved up-conversion (UC) luminescence and applications in optical temperature sensors of up-converting materials have attracted growing interest in recent years. Here, we reported a new series of Ba3-xSrxLu4O9 (B3-xSxLO):Tm3+/Yb3+ phosphors. By de
Publikováno v:
Russian Journal of Physical Chemistry A. 95:2310-2318
A mathematical model in a macroscopic approximation is used to perform a theoretical study of solid-phase mechanochemical synthesis in a binary powder mixture during its mechanical processing in a mechanoactivator (energy-intensive mixer). Analytical
Publikováno v:
Inorganic Chemistry. 60:16507-16517
Single-phase phosphors with tunable emission colors are crucial to develop high-performance white light-emitting diodes since they are valuable to improve the energy efficiency, color rendering index, and correlated color temperature. Most of the stu
Publikováno v:
Inorganic Materials. 57:1052-1060
Composites have been prepared via thermal decomposition of gel-like mixtures containing yttrium, aluminum, and europium(III) salts and ethyl acetate as a basic component. Luminescence of the composites is due to Eu3+ 5D0,1 → 7Fj electronic transiti
Autor:
N. Yu. Kirikova, M. N. Brekhovskikh, V. V. Glushkova, B. L. Tumanskii, S. Kh. Batygov, V. A. Kondratyuk, L. V. Moiseeva, V. N. Makhov
Publikováno v:
Russian Journal of Inorganic Chemistry. 66:1577-1582
The EPR and luminescence spectra of fluorozirconate and fluorochlorozirconate glasses doped with various manganese compounds were studied to determine the oxidation state of manganese ions and the structure of their distribution. The luminescence spe