Size and Shell Effects on the Photoacoustic and Luminescence Properties of Dual Modal Rare-Earth-Doped Nanoparticles for Infrared Photoacoustic Imaging

2016 ◽  
Vol 2 (5) ◽  
pp. 809-817 ◽  
Author(s):  
Yang Sheng ◽  
Lun-De Liao ◽  
Aishwarya Bandla ◽  
Yu-Hang Liu ◽  
Nitish Thakor ◽  
...  
Keyword(s):  
Rare Earth ◽  
Photoacoustic Imaging ◽  
Luminescence Properties ◽  
Shell Effects ◽  
Rare Earth Doped

scholarly journals The pH Value Control of Morphology and Luminescence Properties of Gd2O2S: Tb3+ Phosphors

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 646
Author(s):  
Peng Jiang ◽  
Zhipeng Li ◽  
Wei Lu ◽  
Yi Ma ◽  
Wenhuai Tian
Keyword(s):  
Electron Beam ◽  
Rare Earth ◽  
Ph Value ◽  
Uv Light ◽  
Hexagonal Phase ◽  
Band Gap Energy ◽  
Information Storage ◽  
Luminescence Properties ◽  
Research Fields ◽  
Rare Earth Doped

Developing rare-earth doped oxysulfide phosphors with diverse morphologies has significant value in many research fields such as in displays, medical diagnosis, and information storage. All of the time, phosphors with spherical morphology have been developed in most of the related literatures. Herein, by simply adjusting the pH values of the reaction solution, Gd2O2S:Tb3+ phosphors with various morphologies (sphere-like, sheet-like, cuboid-like, flat square-like, rod-like) were synthesized. The XRD patterns showed that phosphors with all morphologies are pure hexagonal phase of Gd2O2S. The atomic resolution structural analysis by transmission electron microscopy revealed the crystal growth model of the phosphors with different morphology. With the morphological change, the band gap energy of Gd2O2S:Tb3+ crystal changed from 3.76 eV to 4.28 eV, followed by different luminescence performance. The samples with sphere-like and cuboid-like microstructures exhibit stronger cathodoluminescence intensity than commercial product by comparison. Moreover, luminescence of Gd2O2S:Tb3+ phosphors have different emission performance excited by UV light radiation and an electron beam, which when excited by UV light is biased towards yellow, and while excited by an electron beam is biased towards cyan. This finding provides a simple but effective method to achieve rare-earth doped oxysulfide phosphors with diversified and tunable luminescence properties through morphology control.

Luminescence properties of rare-earth-doped fluoride borate crystals

2021 ◽  
pp. 163343
Author(s):  
Tatyana B. Bekker ◽  
Alexey A. Ryadun ◽  
Alexey V. Davydov ◽  
Vladimir P. Solntsev ◽  
Veronika D. Grigorieva
Keyword(s):  
Rare Earth ◽  
Luminescence Properties ◽  
Rare Earth Doped

Synthesis, thermal behaviour and luminescence properties of rare earth-doped titania nanofibers

2011 ◽  
Vol 166 (2) ◽  
pp. 751-764 ◽  
Author(s):  
Ilaria Cacciotti ◽  
Alessandra Bianco ◽  
Giuseppe Pezzotti ◽  
Gualtiero Gusmano
Keyword(s):  
Rare Earth ◽  
Thermal Behaviour ◽  
Luminescence Properties ◽  
Doped Titania ◽  
Rare Earth Doped ◽  
Titania Nanofibers

Luminescence properties of a non-rare-earth doped oxyfluoride LiAl4O6F:Mn4+ red phosphor for solid-state lighting

2019 ◽  
Vol 772 ◽  
pp. 499-506 ◽  
Author(s):  
Qi Wang ◽  
Jinsheng Liao ◽  
Liyun Kong ◽  
Bao Qiu ◽  
Jinqiong Li ◽  
...  
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
Solid State Lighting ◽  
Luminescence Properties ◽  
Red Phosphor ◽  
Rare Earth Doped

Controlled Synthesis and Luminescence Properties of Rare-earth Doped YPO4 Phosphor

2017 ◽  
Vol 38 (5) ◽  
pp. 587-593 ◽  
Author(s):  
刘旭焱 LIU Xu-yan ◽  
丁 楠 DING Nan ◽  
屈重年 QU Chong-nian ◽  
朱永胜 ZHU Yong-sheng ◽  
卢志文 LU Zhi-wen ◽  
...  
Keyword(s):  
Rare Earth ◽  
Luminescence Properties ◽  
Controlled Synthesis ◽  
Rare Earth Doped

Controllable hydrothermal synthesis of Eu3+/Tb3+/Dy3+ activated Zn8[(BO3)3O2(OH)3] micro/nanostructured phosphors: energy transfer and tunable emissions

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89113-89123 ◽  
Author(s):  
P. Liang ◽  
J. W. Liu ◽  
Z. H. Liu
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Hydrothermal Synthesis ◽  
Luminescence Properties ◽  
Rare Earth Doped ◽  
Co Doped

When Eu3+ and Tb3+ ions are co-doped into the ZBH matrix, the phosphor yielded tunable emissions. The concentration of rare earth doped can change the composition and further change the morphology and the luminescence properties.

Synthesis and Luminescence Properties of Doped Magnesium Boro-Tellurite Ceramics

2015 ◽  
Vol 73 (1) ◽  
Author(s):  
Nur Zu Ira Bohari ◽  
R. Hussin ◽  
Zuhairi Ibrahim ◽  
Hendrik O. Lintang
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
Solid State Reaction Method ◽  
Luminescence Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Emission Transition ◽  
Bending Mode ◽  
Two Phases ◽  
Rare Earth Doped

Glass has been widely utilized in the field of lighting, telecommunication and spectroscopy. Boro-tellurite is one of the suitable glasses used for solid state lighting and laser application. The investigation on the luminescence properties of rare earth doped ceramic is rarely used due to the opacity. In this paper boro-tellurite prepared in ceramic can show the better luminescence with the less advantage. The aim of this paper is to present the effect and advantages in luminescence results of boro-tellurite ceramics doped with the constant amount of rare earth. Doped magnesium boro-tellurite with Eu3+ and Dy3+ ceramic have been prepared using solid state reaction method with the compositions of xTeO2-(70-x)B2O3-30MgO with 10≤x≤40, and have been doped with Eu2O3 (1mol%) and Dy2O3 (1mol%) . The characterizations of the samples have been investigated by means of X-Ray diffraction, Raman, Infrared and Photoluminescence spectroscopy. From the X-ray diffraction results, two phases are assigned to MgTe2O5 and Mg2B2O5. Raman spectroscopy showed strong bands observed in the vicinity of 140, 175, 220, 266, 332, 403, 436, 646, 694, 723, 757 and 806 cm-1. FTIR spectra showed bands located in the range between 400-800 cm-1 are assigned to the bending mode of Te-O-Te, TeO3 and TeO4. In the range of 800-1400 cm-1,the bands are associated with B-O, B-O-B, BO3 and BO4 bonds. The emission transition 5D0-7F2 corresponded to the red emission (612 nm) was found to be the most intense in all the Eu3+-doped magnesium boro-tellurite ceramics.  

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