Yellow persistent luminescence in Ce3+–Cr3+-codoped gadolinium aluminum gallium garnet transparent ceramics after blue-light excitation

2014 ◽  
Vol 7 (6) ◽  
pp. 062201 ◽  
Author(s):  
Jumpei Ueda ◽  
Keisuke Kuroishi ◽  
Setsuhisa Tanabe
Keyword(s):  
Blue Light ◽  
Transparent Ceramics ◽  
Persistent Luminescence ◽  
Light Excitation

Synthesis and luminescence properties of a broadband near-infrared emitting non-gallate persistent luminescence Mg1.4Zn0.6SnO4:Cr3+ phosphor

2021 ◽  
Author(s):  
Sen Wang ◽  
Jize Cai ◽  
Ran Pang ◽  
Haiyan Wu ◽  
Yanqing Luo ◽  
...  
Keyword(s):  
Blue Light ◽  
Near Infrared ◽  
Luminescence Properties ◽  
Persistent Luminescence ◽  
Light Excitation

A serial of novel non-gallate near-infrared long-persistent phosphorescence Mg2-xZnxSnO4:Cr3+ phosphors were synthesized, and their structure and luminescence properties were investigated systematically. Under the 448 nm blue light excitation, all the...

scholarly journals Fluorescence distribution pattern allows to distinguish two species of Eugymnanthea (Leptomedusae: Eirenidae)

2008 ◽  
Vol 88 (8) ◽  
pp. 1743-1746 ◽  
Author(s):  
Shin Kubota ◽  
Patrizia Pagliara ◽  
Cinzia Gravili
Keyword(s):  
Distribution Pattern ◽  
Blue Light ◽  
Biological Significance ◽  
Distribution Patterns ◽  
Taxonomic Character ◽  
Green Fluorescence ◽  
Short Life ◽  
Fluorescent Microscope ◽  
Light Excitation ◽  
Auto Fluorescence

The auto-fluorescence patterns of the medusae observed under a fluorescent microscope with blue light excitation allows to distinguish two species of Eugymnanthea, this even when they are still attached to the hydroid as small medusa buds despite the occurrence of a sex-dependant pattern in E. japonica. A total of four distribution patterns of green fluorescence, including non-fluorescence, could be found. Three of them are found in E. japonica, called ‘subumbrellar fluorescence type’ except for non-fluorescence, while another type is found in E. inquilina, called ‘umbrellar margin fluorescence type’. During the short life of the medusa the latter type remained invariable for up to six days in E. inquilina, while the pattern observed for up to seven days in E. japonica changed sometimes, but it always remained distinguishable from the pattern found in E. inquilina. Therefore, the fluorescence pattern is a reliable taxonomic character. Fluorescence was not found in unfertilized eggs, planulae 2–8 days old, parthenogenetically produced larvae, or in the hydroids of the two species. The auto-fluorescent and possible bioluminescent tissues of these Eugymnanthea medusae could have some unknown biological significance.

A highly-efficient blue-light excitable red phosphor: intramolecular π-stacking interactions in one dinuclear europium(iii) complex

2016 ◽  
Vol 45 (7) ◽  
pp. 2839-2844 ◽  
Author(s):  
Zhengliang Wang ◽  
Hui Yang ◽  
Pei He ◽  
Yonghui He ◽  
Jishou Zhao ◽  
...  
Keyword(s):  
Blue Light ◽  
Stacking Interactions ◽  
Red Phosphor ◽  
Red Emission ◽  
Highly Efficient ◽  
Π Stacking ◽  
Light Excitation

The europium(iii) complex [Eu2(2,7-BTFDBC)(DBM)4(Phen)2] with multiple T-shaped and parallel-displaced π-stacking interactions exhibits intense red emission under blue light excitation with high colour purity.

Enhanced ~1.8 μm photoluminescence under blue light excitation in Tm Bi co-doped germanate glass and its temperature dependence

2019 ◽  
Vol 525 ◽  
pp. 119645 ◽  
Author(s):  
Chengzhen Liu ◽  
Yixi Zhuang ◽  
Jianjun Han ◽  
Jian Ruan ◽  
Xiujian Zhao ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Blue Light ◽  
Germanate Glass ◽  
Light Excitation ◽  
Co Doped

Photoluminescence and Photoluminescence Excitation Mechanisms for Porous Silicon and Silicon Oxynitride

1999 ◽  
Vol 588 ◽  
Author(s):  
Xingsheng Liu ◽  
Jesus Noel Calata ◽  
Houyun Liang ◽  
Wangzhou Shi ◽  
Xuanyin Lin ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Blue Light ◽  
Light Emission ◽  
Luminescence Center ◽  
Silicon Oxynitride ◽  
Photoluminescence Excitation ◽  
Oxide Layers ◽  
Light Emitting ◽  
Light Excitation ◽  
Excitation Mechanisms

AbstractThrough a comparative study of the light emission and light excitation property of porous silicon (PS) and Si oxide, photoluminescence (PL) and photoluminescence excitation (PLE) mechanisms for blue-light-emitting PS are analyzed. Strong blue light (445nm) and ultraviolet light (365nm) emission from silicon-rich silicon oxynitride films at room temperature were observed. An analysis of the PL and PLE spectra of PS and Si oxide indicated that for blue-light emission from PS, there are two types of photoexcitation processes: photo-excitation occurring in nanometer Si particles (NSP's) and in the Si oxide layers covering NSPs, and radiative recombination of electron-hole pairs taking place in luminescence centers (LCs) located on the interfaces between NSP's and Si oxide and those inside Si oxide layers. The PL spectra of silicon-rich silicon oxynitride films implies that the PL originated from some LCs in SiOx and SiOxNy:H, while PLE spectra indicates that photoexcitation occurs in NSPs, SiOx and SiOxNy:H. The 365 nm band is attributed to the former two photoexcitation processes and the 445 nm one to the third process. As such, the quantum confinement/luminescence center model appears to be a satisfactory model in explaining the experimental results.

A red-emitting phosphor of Li5La3Ti2O12:Eu3+ with garnet-like structure and near-UV/blue light excitation

2018 ◽  
Vol 203 ◽  
pp. 152-159 ◽  
Author(s):  
Suyin Zhang ◽  
Pengyue Zhang ◽  
Xin Liu ◽  
Zhexi Yang ◽  
Yanlin Huang ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Excitation ◽  
Red Emitting Phosphor

A Novel Oxynitride Phosphor Sr3-2ySiO5-6xN4x: yCe3+, yLi+ for White LED

2014 ◽  
Vol 898 ◽  
pp. 76-79
Author(s):  
Ning Jia Fu ◽  
Ke Hui Qiu ◽  
Xue Guang Lu ◽  
Kun Zhao ◽  
Yu Tao Li
Keyword(s):  
Nitrogen Content ◽  
Blue Light ◽  
Blue Shift ◽  
Partial Substitution ◽  
White Led ◽  
Major Phase ◽  
Broad Emission ◽  
Light Excitation ◽  
Xrd Patterns

In this paper, a novel yellow-emitting oxynitride phosphor Sr3-2xSiO5-6xN4x: yCe3+, yLi+ (0 x 0.33, 0.01 y 0.04) has been reported. The XRD patterns illustrate that the partial substitution of (SiN)+ for the (SiO)2+ is feasible and the major phase of synthesized samples is isostructural with Sr3SiO5. Under blue light excitation, the oxynitride phosphor shows a broad emission about 557 nm, contributing to the 4f5d transition. The PL intensities show a blue shift as the increase of nitrogen content (the locations of peaks move from 559 nm to 549 nm).

scholarly journals Nonvolatile liquid anthracenes for facile full-colour luminescence tuning at single blue-light excitation

2013 ◽  
Vol 4 (1) ◽  
Author(s):  
Sukumaran Santhosh Babu ◽  
Martin J. Hollamby ◽  
Junko Aimi ◽  
Hiroaki Ozawa ◽  
Akinori Saeki ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Excitation

White luminescence from CdS nanocrystals under the blue light excitation

2014 ◽  
Vol 214 ◽  
pp. 108-111 ◽  
Author(s):  
Bo Li ◽  
Xiaosong Zhang ◽  
Lan Li ◽  
Mengzhen Li ◽  
Jianping Xu ◽  
...  
Keyword(s):  
Blue Light ◽  
Cds Nanocrystals ◽  
Light Excitation ◽  
White Luminescence
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