Nanostructure, optical and photoluminescence properties of Zn1−xNixO nanoclusters by co-precipitation method

2012 ◽  
Vol 24 (4) ◽  
pp. 1069-1080 ◽  
Author(s):  
R. Gopalakrishnan ◽  
S. Muthukumaran
Keyword(s):  
Precipitation Method ◽  
Photoluminescence Properties ◽  
Co Precipitation

XRD and Photoluminescence Properties of CaSO4:Dy Phosphor Synthesized by New Co-Precipitation Method

2017 ◽  
Vol 888 ◽  
pp. 333-337 ◽  
Author(s):  
Nadira Kamarudin ◽  
Wan Saffiey Wan Abdullah ◽  
Muhammad Azmi Abdul Hamid
Keyword(s):  
Calcium Sulfate ◽  
Average Crystallite Size ◽  
Information Storage ◽  
Precipitation Method ◽  
Photoluminescence Properties ◽  
Orthorhombic Crystal ◽  
Phosphor Material ◽  
X Ray ◽  
Wide Range ◽  
Co Precipitation

This paper presents the luminescence properties of dysprosium (Dy) doped calcium sulfate (CaSO4) phosphor material produced by co-precipitation technique with 0.1 - 0.5 mol% concentration of dopant. The crystallinity of the produced powder was studied using x-ray powder diffraction (XRD). The XRD spectrum shows high purity anhydrite CaSO4 phosphor material produced. The average crystallite size of 74 nm with orthorhombic crystal system was obtained. The luminescence behavior of produced CaSO4: Dy was studied using a photoluminescence (PL) spectrometer. The excitation and emission spectrum peaks associated with defects and vacancies of the phosphor material at claimed crystalline phase. The mixed peaks of excitation and emission that corresponds to micro and nano sized particle was shown for the produced powders. These properties show that the produced powders have wide range of luminescence detection with many electron traps ready for thermoluminescence (TL) information storage.

Comparative Study on the Microstructure and Photoluminescence Properties of SnO2 Nano Particles Prepared by Different Methods

2015 ◽  
Vol 719-720 ◽  
pp. 132-136 ◽  
Author(s):  
Ghazaleh Allaedini ◽  
Siti Masrinda Tasirin ◽  
Meor Zainal Meor Talib ◽  
Payam Aminayi ◽  
Ifa Puspasari
Keyword(s):  
Sol Gel ◽  
Spherical Shape ◽  
Nano Particles ◽  
Precipitation Method ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
Gel Method ◽  
Sol Gel Method ◽  
Significant Difference ◽  
Co Precipitation

This study presents comparisons between the morphologies and photoluminescence properties of tin oxide (SnO2) nanoparticles prepared by two methods, namely the sol gel and the co-precipitation methods. The characteristics of the particles were analyzed using X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The particles prepared using the sol-gel method have a finer particle size and more spherical shape. However, no significant difference was observed in terms of morphology and homogeneity in the samples produced by either the co-precipitation or sol-gel methods. In contrast, the photoluminescence study shows that the emission peak for powder prepared using the sol-gel method was higher than that of the co-precipitation method.

Photoluminescence properties of YAG:Ce 3+ ,Pr 3+ nano-sized phosphors synthesized by a modified co-precipitation method

2017 ◽  
Vol 35 (4) ◽  
pp. 341-346 ◽  
Author(s):  
Peng DAI ◽  
Cheng JI ◽  
Liming SHEN ◽  
Qi QIAN ◽  
Guobiao GUO ◽  
...  
Keyword(s):  
Precipitation Method ◽  
Photoluminescence Properties ◽  
Co Precipitation

Optical, Structural and Photoluminescence Properties of Gd x SrO: CdO Nanostructures Synthesized by Co Precipitation Method

2021 ◽  
Vol 31 (2) ◽  
pp. 487-499
Author(s):  
Vinayak Adimule ◽  
Santosh S. Nandi ◽  
B. C. Yallur ◽  
Debdas Bhowmik ◽  
Adarsha Haramballi Jagadeesha
Keyword(s):  
Precipitation Method ◽  
Photoluminescence Properties ◽  
Co Precipitation

Synthesis and photoluminescence properties of LaPO4:Ce3+, Tb3+ nanophosphors by microwave-assisted co-precipitation method at low temperature

2015 ◽  
Vol 08 (06) ◽  
pp. 1550078 ◽  
Author(s):  
Wei-Li Dong ◽  
Xi-Yan Zhang ◽  
Hui Shi ◽  
Xiao-Yun Mi ◽  
Neng-Li Wang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Precipitation Method ◽  
Photoluminescence Properties ◽  
Monoclinic Crystal ◽  
Green Phosphor ◽  
Display Devices ◽  
Lanthanum Phosphate ◽  
Microwave Assisted ◽  
Monoclinic Crystal Structure ◽  
Co Precipitation

Nanosized green phosphor LaPO 4: Ce 3+, Tb 3+ has been synthesized by microwave-assisted co-precipitation method. The morphology, crystal structure and photoluminescence properties have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and fluorescence spectrophotometer. The lanthanum phosphate phosphors with monoclinic crystal structure and fine crystallinity and dispersibility were synthesized at 900°C for 1 h and the particle size of the phosphors is ∼ 100 nm. The strongest photoluminescence emission peak is located at 543 nm due to the (5D4→7F5) transition of Tb 3+ ion. The experimental results indicate that nanosized green phosphor 40% Ce 3+ and 20% Tb 3+ doped LaPO 4 synthesized by microwave-assisted co-precipitation method is a beneficial phosphor for high resolution display devices.

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