Photoluminescence and Electroluminescence Properties of La2Ti2O7:Pr

2018 ◽  
Vol 790 ◽  
pp. 60-64 ◽  
Author(s):  
Tôru Kyômen ◽  
Shido Saito ◽  
Minoru Hanaya ◽  
Hiroshi Takashima
Keyword(s):  
Thin Film ◽  
Solid State ◽  
Band Gap ◽  
Solid State Reaction ◽  
Spin Coating ◽  
Sol Gel ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Coating Methods

La2Ti2O7:Pr powder was prepared by a solid-state reaction method. Photoluminescence due to f-f transitions of Pr3+was induced by band-gap excitation of La2Ti2O7. La2Ti2O7:Pr thin film was prepared by sol-gel and spin-coating methods. The thin film showed visible electroluminescence due to f-f transition of Pr3+by applying ac voltages.

Photoluminescence and Electroluminescence Properties of (Ca,Sr)TiO3:Er

2016 ◽  
Vol 698 ◽  
pp. 60-65 ◽  
Author(s):  
Tôru Kyômen ◽  
Miyu Seki ◽  
Minoru Hanaya ◽  
Hiroshi Takashima
Keyword(s):  
Thin Films ◽  
Solid State ◽  
Band Gap ◽  
Solid State Reaction ◽  
Spin Coating ◽  
Sol Gel ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Powder Samples ◽  
Coating Methods

Powder samples of (Ca,Sr)TiO3:Er were prepared by a solid-state reaction method. Photoluminescence due to f-f transitions of Er3+ was not induced by band-gap excitation of (Ca,Sr)TiO3 but by f-f transitions of Er3+. An electroluminescent device in which thin films of Ca0.6Sr0.4TiO3:Er and SnO2:Sb are stacked alternately was prepared by sol-gel and spin-coating methods. Very weak electroluminescence due to f-f transition of Er3+ was observed in the device.

scholarly journals Size-dependent optical and thermochromic properties of Sm3Fe5O12

RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 37765-37770 ◽  
Author(s):  
Huanhuan Liu ◽  
Long Yuan ◽  
Hui Qi ◽  
Yanyan Du ◽  
Shan Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Sol Gel ◽  
Solid State Reaction Method ◽  
Inorganic Materials ◽  
Particle Sizes ◽  
Reaction Method ◽  
Size Dependent ◽  
Thermochromic Properties

Reversible thermochromic inorganic materials of Sm3Fe5O12with different particle sizes have been synthesized by a conventional high temperature solid state reaction method (2.51 μm) and sol–gel method (0.16 μm).

Photocurrent Enhancement for Ti-Doped Fe2O3 Thin Film Photoanodes by an In Situ Solid-State Reaction Method

2013 ◽  
Vol 5 (4) ◽  
pp. 1310-1316 ◽  
Author(s):  
Chunhui Miao ◽  
Tongfei Shi ◽  
Guoping Xu ◽  
Shulin Ji ◽  
Changhui Ye
Keyword(s):  
Thin Film ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Fe2o3 Thin Film

Structure and Luminescence of Ba3MgSi2O8: Eu2+, Mn2+ Phosphors

2011 ◽  
Vol 399-401 ◽  
pp. 1016-1019
Author(s):  
Yue Li ◽  
Da Wei He ◽  
Yong Sheng Wang ◽  
Fu Ming ◽  
Yang Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Phase Change ◽  
Emission Spectrum ◽  
Solid State Reaction ◽  
Crystallization Temperature ◽  
Sol Gel ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Violet Light

In this paper, Ba3MgSi2O8: Eu2+, Mn2+ phosphor was synthesized by the sol-gel method and high temperature solid-state reaction method. The structure and emission spectrum excited by near violet light were investigated. we studied the process of phase change in roasting and determined the approximate crystallization temperature of Ba3MgSi2O8: Eu2+, Mn2+ phosphors. Our results demonstrate that 514 nm emission bands were from Eu2+ ions replacing of the sites of Ba2+ in Ba2SiO4. 440 nm emission bands originated from Eu2+ ions substituting the sites of Ba2+ in Ba3MgSi2O8, corresponded to 4f65d1→4f7 transition of Eu2+ ions. 615 nm emission bands ascribed to Mn2+ ions taking place of the sites of Mg2+ ions, corresponded to 4T→6A red launch of Mn2+ ions.

scholarly journals Comparison of Fe2TiO5/C photocatalysts synthesized via a nonhydrolytic sol–gel method and solid-state reaction method

RSC Advances ◽  
2020 ◽  
Vol 10 (71) ◽  
pp. 43762-43772
Author(s):  
Qianqian Zhao ◽  
Guo Feng ◽  
Feng Jiang ◽  
Shanfang Lan ◽  
Junhua Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Sol Gel ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Gel Method ◽  
Sol Gel Method

Two different methods were used to prepare Fe2TiO5/C photocatalysts, demonstrating the superiorities of in situ carbon introduced by a NHSG method.

Properties of Na1/2Bi1/2TiO3 Ceramic Prepared by Sol-Gel Method

2007 ◽  
Vol 280-283 ◽  
pp. 209-210
Author(s):  
Hui Shi ◽  
Wei Pan ◽  
Ming Hao Fang ◽  
Dan Xie
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Sol Gel ◽  
Relative Dielectric Constant ◽  
Sodium Titanate ◽  
Solid State Reaction Method ◽  
Piezoelectric Constant ◽  
Reaction Method ◽  
Gel Method ◽  
Sol Gel Method

Bismuth sodium titanate ceramic was prepared by sol-gel method. The crystallization, density and microstructure were determined. The grains of BNT ceramic prepared by sol-gel method were equiaxial, ~ 2 µm, which was smaller than that prepared by solid-state reaction method. The piezoelectric and dielectric properties were investigated. When the sintering temperature was 1140°C, maximum relative dielectric constant and piezoelectric constant can be obtained. The piezoelectric constant of BNT ceramic prepared by sol-gel method was higher than those prepared by solid-state reaction method.

Particle Size and Band Gap Calculation of Pure Y2SiO5 Crystal Synthesized by Solid-State Reaction Method

2021 ◽  
Vol 51 (3) ◽  
pp. 599-604
Author(s):  
Kanchan Upadhyay ◽  
Sabu Thomas ◽  
Nandakumar Kalarikkal ◽  
Raunak Kumar Tamrakar
Keyword(s):  
Particle Size ◽  
Solid State ◽  
Band Gap ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Reaction Method
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