Tailoring photoluminescence stability in double perovskite red phosphors A2BAlF6:Mn4+(A = Rb, Cs; B = K, Rb)vianeighboring-cation modulation

2017 ◽  
Vol 5 (47) ◽  
pp. 12422-12429 ◽  
Author(s):  
T. T. Deng ◽  
E. H. Song ◽  
Y. Y. Zhou ◽  
L. Y. Wang ◽  
Q. Y. Zhang

We have effectively driven the photoluminescence stability in water tolerance and anti-thermal quenching behavior in double perovskite fluorides A2BAlF6:Mn4+(A = Rb, Cs; B = K, Rb)viamodulating the neighboring cation on the A-site or B-site.

2015 ◽  
Vol 182 ◽  
pp. 227-239 ◽  
Author(s):  
Tae Ho Shin ◽  
Jae-Ha Myung ◽  
Maarten Verbraeken ◽  
Guntae Kim ◽  
John T. S. Irvine

A-site ordered PrBaMn2O5+δ was investigated as a potential cathode for CO2 electrolysis using a La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) electrolyte. The A-site ordered layered double perovskite, PrBaMn2O5+δ, was found to enhance electrocatalytic activity for CO2 reduction on the cathode side since it supports mixed valent transition metal cations such as Mn, which could provide high electrical conductivity and maintain a large oxygen vacancy content, contributing to fast oxygen ion diffusion. It was found that during the oxidation of the reduced PrBaMn2O5+δ (O5 phase) to PrBaMn2O6−δ (O6 phase), a reversible oxygen switchover in the lattice takes place. In addition, here the successful CO2 electrolysis was measured in LSGM electrolyte with this novel oxide electrode. It was found that this PrBaMn2O5+δ, layered perovskite cathode exhibits a performance with a current density of 0.85 A cm−2 at 1.5 V and 850 °C and the electrochemical properties were also evaluated by impedance spectroscopy.


2018 ◽  
Vol 466 ◽  
pp. 133-137 ◽  
Author(s):  
Yanchun Hu ◽  
Tengyu Guo ◽  
Xianwei Wang ◽  
Yawen Cui ◽  
Weixia Li ◽  
...  

2019 ◽  
Vol 45 (16) ◽  
pp. 20837-20843 ◽  
Author(s):  
Xiaoyan Sun ◽  
Nan Ding ◽  
Wentao Huang ◽  
Haikui Zhu ◽  
Lixi Wang ◽  
...  

2012 ◽  
Vol 24 (11) ◽  
pp. 2235-2239 ◽  
Author(s):  
You-wen Long ◽  
Takateru Kawakami ◽  
Wei-tin Chen ◽  
Takashi Saito ◽  
Tetsu Watanuki ◽  
...  

2017 ◽  
Vol 56 (19) ◽  
pp. 11854-11861 ◽  
Author(s):  
Gaoyang Gou ◽  
Nenian Charles ◽  
Jing Shi ◽  
James M. Rondinelli

2020 ◽  
Vol 847 ◽  
pp. 156249
Author(s):  
Xue Geng ◽  
Yan Xie ◽  
Yingying Ma ◽  
Yuanyuan Liu ◽  
Junmeng Luo ◽  
...  

2009 ◽  
Vol 48 (17) ◽  
pp. 8489-8492 ◽  
Author(s):  
Youwen Long ◽  
Takashi Saito ◽  
Takenori Tohyama ◽  
Kengo Oka ◽  
Masaki Azuma ◽  
...  

2013 ◽  
Vol 41 (6) ◽  
pp. 439-447 ◽  
Author(s):  
O. Noked ◽  
A. Melchior ◽  
R. Shuker ◽  
R. Steininger ◽  
B. J. Kennedy ◽  
...  
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