Comparative analysis of luminescence Property of Tb3+and Er3+Activated Calcium Silicate Phosphor

2018 ◽  
Vol 6 (10) ◽  
pp. 108-114
Author(s):  
Shailendra Verma ◽  
Anup Mishra ◽  
Manmeet Bhuie ◽  
Nirbhay K Singh
Keyword(s):  
Comparative Analysis ◽  
Calcium Silicate ◽  
Luminescence Property ◽  
Silicate Phosphor

scholarly journals Fluorescence Properties and Synthesis of Green-Emitting Tb3+-Activated Amorphous Calcium Silicate Phosphor by Ultraviolet Irradiation of 378 nm

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Yoshiyuki Kojima ◽  
Masaaki Numazawa ◽  
Shinnosuke Kamei ◽  
Nobuyuki Nishimiya
Keyword(s):  
Ultraviolet Irradiation ◽  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Atomic Ratio ◽  
Emission Wavelength ◽  
Excitation Wavelength ◽  
Water Molecules ◽  
Oh Groups ◽  
Ultraviolet Excitation ◽  
Silicate Phosphor

The excitation wavelength of conventional Tb3+-activated phosphor is near 270 nm. This study describes novel green-emitting Tb3+-activated amorphous calcium silicate by ultraviolet excitation at 378 nm. The Tb3+-activated amorphous calcium silicate was prepared by heating a sample of Tb3+-activated calcium silicate hydrate (CSH) at 900°C for 30 minutes. The emission wavelength of the resulting phosphor was 544 nm. The optimum excitation wavelength within the range 300–400 nm was 378 nm. The Tb3+-activated amorphous calcium silicate emitted green by ultraviolet irradiation. The optimum initial Tb/Ca atomic ratio of this phosphor was about 0.5. A mechanism for the action of the phosphor is proposed, in which Tb3+ions existing in the layer of the CSH lead to loss of water molecules and OH groups.

Photoluminescence Properties of a New Orange-Red-Emitting Sm3+-Doped Potassium Calcium Silicate Phosphor

2017 ◽  
Vol 9 (3) ◽  
pp. 514-518
Author(s):  
Ruijin Yu ◽  
Mengfan He ◽  
Nannan Xie ◽  
Hyeon Mi Noh ◽  
Byung Kee Moon ◽  
...  
Keyword(s):  
Calcium Silicate ◽  
Photoluminescence Properties ◽  
Silicate Phosphor

Fluorescent properties of a green- to red-emitting Eu3+, Tb3+ codoped amorphous calcium silicate phosphor

2012 ◽  
Vol 132 (10) ◽  
pp. 2648-2652 ◽  
Author(s):  
Yoshiyuki Kojima ◽  
Masaaki Numazawa ◽  
Tetsuo Umegaki
Keyword(s):  
Calcium Silicate ◽  
Fluorescent Properties ◽  
Silicate Phosphor

Luminescence Property of Silicate Phosphor, Ba9Sc2Si6O24:Ce, Synthesized by Melt Quenching Technique

2018 ◽  
Vol 766 ◽  
pp. 186-190
Author(s):  
Kenji Toda ◽  
Atsushi Tsuura ◽  
Minenori Katsu ◽  
Shinnosuke Kamei ◽  
Tadashi Ishigaki ◽  
...  
Keyword(s):  
Luminescence Property ◽  
Synthesis Method ◽  
Rapid Screening ◽  
Melt Quenching ◽  
Silicate Phosphor

Well-grown Ba9Sc2Si6O24:Ce3+ phosphors were synthesized by a novel melt quenching synthesis method. Sintered phosphor balls with excellent luminescent characteristics were obtained. This method is useful tool for rapid screening of phosphor materials.

Synthesis of orange emitting Sm3+ doped sodium calcium silicate phosphor by sol-gel method for photonic device applications

2020 ◽  
Vol 46 (16) ◽  
pp. 26434-26439 ◽  
Author(s):  
Harpreet Kaur ◽  
M. Jayasimhadri ◽  
Mukesh K. Sahu ◽  
P. Koteswara Rao ◽  
N.S. Reddy
Keyword(s):  
Calcium Silicate ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photonic Device ◽  
Silicate Phosphor ◽  
Sodium Calcium ◽  
Device Applications

Comparative Analysis of Calcium Silicate–based Root Filling Materials Using an Open Apex Model

2016 ◽  
Vol 42 (4) ◽  
pp. 654-658 ◽  
Author(s):  
Dennis Tran ◽  
Jianing He ◽  
Gerald N. Glickman ◽  
Karl F. Woodmansey
Keyword(s):  
Comparative Analysis ◽  
Calcium Silicate ◽  
Filling Materials ◽  
Apex Model

scholarly journals SYNTHESIS, CHARACTERIZATION AND PHOTOLUMINESCENCE PROPERTIES OF EU3+DOPED CALCIUM SILICATE PHOSPHOR BY CONVENTIONAL SOLID STATE REACTION METHOD

2020 ◽  
Vol 8 (12) ◽  
pp. 762-769
Author(s):  
Ch. Atchyutha Rao ◽  
◽  
K.V.R. Murthy ◽  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Calcium Silicate ◽  
Solid State Reaction Method ◽  
High Temperature Strength ◽  
Photoluminescence Properties ◽  
Conventional Solid State Reaction ◽  
Excitation Light ◽  
Reaction Method ◽  
Silicate Phosphor

Calcium Silicate phosphor acquires a higher luminous efficiency when it is doped with rare earth activated ions. Silicate phosphors are used for a fluorescent, a cathode-ray tube, a luminous body, a vacuum ultraviolet excitation light emitting element etc. The silicates of calcium are known for their thermal stability, high temperature strength, low thermal expansion, cheep residence and chemical inertness. The present paper reports on the synthesis, characterization and photoluminescence properties of Eu3+ doped calcium silicate phosphor prepared by conventional solid state reaction method heating at 12000C for 3 hrs. The received cakes are grounded for 30 minutes each. The phosphors are prepared and the received powder is subjected to PL, XRD, SEM, EDAX and CIE analysis. The following section discusses and the experimental results are mentioned in these phosphors. The present Phosphor can act as a host for red light emission in many display devices and technological applications.

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