Energy Transfer Dynamics and Quantum Yield Derivation of the Tm3+ Concentration-Dependent, Three-Photon Near-Infrared Quantum Cutting in La2BaZnO5

2015 ◽  
Vol 119 (47) ◽  
pp. 26643-26651 ◽  
Author(s):  
Ting Yu ◽  
Huihong Lin ◽  
Dechao Yu ◽  
Shi Ye ◽  
Qinyuan Zhang
2011 ◽  
Vol 11 (11) ◽  
pp. 9543-9549 ◽  
Author(s):  
Xueqin Cao ◽  
Li Li ◽  
Xiantao Wei ◽  
Yonghu Chen ◽  
Weiping Zhang ◽  
...  

2012 ◽  
Vol 116 (21) ◽  
pp. 11652-11657 ◽  
Author(s):  
Bo Fan ◽  
Christophe Chlique ◽  
Odile Merdrignac-Conanec ◽  
Xianghua Zhang ◽  
Xianping Fan

2019 ◽  
Vol 784 ◽  
pp. 611-619 ◽  
Author(s):  
Haoming Luo ◽  
Shaoan Zhang ◽  
Zhongfei Mu ◽  
Fugen Wu ◽  
Zhaogang Nie ◽  
...  

2012 ◽  
Vol 502 ◽  
pp. 136-139 ◽  
Author(s):  
Jia Yue Sun ◽  
Yi Ning Sun ◽  
Ji Cheng Zhu ◽  
Jun Hui Zeng ◽  
Hai Yan Du

An efficient near-infrared (NIR) quantum cutting (QC) Tb3+ and Yb3+ co-doped phosphor Sr3Gd(PO4)3 has been synthesized by conventional high temperature solid technique. Upon excitation of Tb3+ with a visible photon at 485 nm, two NIR photons could be emitted by Yb3+ through cooperative energy transfer (CTE) from Tb3+ to two Yb3+ ions. Excitation and emission spectra as well as fluorescence decay measurements have been carried out to examine the occurrence of cooperative energy transfer (CET ) from Tb3+ to Yb3+ ions. The result indicates Tb3+ and Yb3+ co-doped Sr3Gd(PO4)3 is potentially used as down-converter layer in silicon-based solar cell.


Author(s):  
T. Zhezhera ◽  
P. Gluchowski ◽  
M. Nowicki ◽  
M. Chrunik ◽  
A. Majchrowski ◽  
...  

Abstract An efficient near-infrared quantum cutting process by cooperative down-conversion of active Bi3+ and Nd3+ ions was demonstrated in Bi3TeBO9:Nd3+ phosphors. In particular, the near-infrared emission of Nd3+ ions enhanced by Bi3+ ions of a series of novel Bi3TeBO9:Nd3+ microcrystalline powders doped with Nd3+ ions in various concentrations was investigated. In order to investigate the luminescent properties of BTBO:Nd3+ powders, the excitation and emission spectra and the fluorescence decay time were measured and analyzed. In particular, the emission of Bi3TeBO9:Nd3+ at 890 and 1064 nm was excited at 327 nm (via energy transfer from Bi3+ ions) and at 586.4 nm (directly by Nd3+ ions). The highest intensity emission bands in near-infrared were detected in the spectra of Bi3TeBO9:Nd3+ doped with 5.0 and 0.5 at.% of Nd3+ ions upon excitation in ultraviolet and visible spectral range, respectively. The fluorescence decay lifetime monitored at 1064 nm for Bi3TeBO9:Nd3+ powders shows the single- or double-exponential character depending on the concentrations of Nd3+ ions. The possible mechanisms of energy relaxation after excitation Bi3TeBO9:Nd3+ powders in ultraviolet or visible spectral range were discussed. The investigated Bi3TeBO9:Nd3+ phosphors efficiently concentrate the ultraviolet/visible radiation in the near-infrared spectral range and can be potentially used as effective spectral converters. Graphical abstract


2013 ◽  
Vol 683 ◽  
pp. 172-175 ◽  
Author(s):  
Jia Yue Sun ◽  
Yi Ning Sun ◽  
Jun Hui Zeng ◽  
Ji Cheng Zhu ◽  
Hai Yan Du

A near Infrared (NIR) quantum cutting (QC) Sr3AlO4F:Tb3+,Yb3+phosphor was synthesized by the conventional high temperature solid-state reaction. The luminescence spectra both in visible (VIS) and NIR regions and decay lifetime curves of Tb3+have been measured to prove energy transfer (ET) from Tb3+to Yb3+. Quantum efficiency (QE) related to Yb3+concentration was calculated and the highest QE was found to be 135% hen Yb3+doped concentration at 20%. The present Tb3+and Yb3+co-doped Sr3AlO4F phosphor may be a promising candidate to modify the spectral of the solar light.


2011 ◽  
Vol 102 (3) ◽  
pp. 555-558 ◽  
Author(s):  
K. Deng ◽  
X. Wei ◽  
X. Wang ◽  
Y. Chen ◽  
M. Yin

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