Unveiling White Light Emission of a One-Dimensional Cu(I)-Based Organometallic Halide toward Single-Phase Light-Emitting Diode Applications

Author(s):  
Jinglong Huang ◽  
Yinhui Peng ◽  
Jiance Jin ◽  
Maxim S. Molokeev ◽  
Xiaobao Yang ◽  
...  
2013 ◽  
Vol 211 (3) ◽  
pp. 651-655 ◽  
Author(s):  
Jorge Oliva ◽  
Elder De la Rosa ◽  
Luis Diaz-Torres ◽  
Anvar Zakhidov

2009 ◽  
Vol 24 (5) ◽  
pp. 1730-1734 ◽  
Author(s):  
Hucheng Yang ◽  
G. Lakshminarayana ◽  
Yu Teng ◽  
Shifeng Zhou ◽  
Jianrong Qiu

Sm3+, Ce3+ codoped Al2O3–La2O3–SiO2 glasses were prepared and their luminescence properties were characterized. Blue-cyan to orange-red tunable luminescence was observed from these glasses with different excitation wavelengths ranging from 385 to 410 nm. White light emission with internal luminescence efficiency 42% has been observed using commercially available purple light-emitting-diode excitation. The energy transfer between Ce3+ and Sm3+ has also been investigated from fluorescence decay curves and spectral properties.


2021 ◽  
Vol 11 (1) ◽  
pp. 54-62
Author(s):  
Jinpeng Xie ◽  
Bonan Liu ◽  
Qingtao Qong ◽  
Zhicheng Xu ◽  
Zhiqiang Jin ◽  
...  

In this work, we report Eu3+/Tb3+/Eu2+ co-activated Gd2O2 S as novel phosphor materials that can be effectively applied in the white-light emitting diode based on a near-UV chip with sensational performances. The luminescent properties and energy transfer mechanism have been thoroughly investigated. The as-prepared europium/terbium co-doped Gd2O2 S phosphors exhibit strong fluorescence with tunable color output under UV-vis light excitation. Furthermore, a high response to ultraviolet illumination of 398 nm wavelength was observed in the excitation spectra, indicating an excellent match with a light-emitting-diode chip in the dominant emissions. It is found that a tricolor (blue, green and red) emission band which results in a white light emission can be acquired when Eu3+, Eu2+ and Tb3+ ions are all co-doped into the single phase Gd2O2S, and an optimum ion doping level (10 at.% Eu and 0.7 at.% Tb) can effectively emit nearly pure white color photoluminescence with lifetime effectively tuned from 0.55 ms to 1.10 ms. The CIE (Commission International de I'Eclairage 1931 chromaticity) is X = 0.3507, Y = 0.3029. It is therefore expected that the newly found phosphor material with high-performance properties possess great potentials for the future advanced white LED applications.


2008 ◽  
Vol 18 (30) ◽  
pp. 3568 ◽  
Author(s):  
Ilkem Ozge Huyal ◽  
Unsal Koldemir ◽  
Tuncay Ozel ◽  
Hilmi Volkan Demir ◽  
Donus Tuncel

2015 ◽  
Vol 41 (1) ◽  
pp. 1917-1920 ◽  
Author(s):  
Fengxin Liu ◽  
Qihui Liu ◽  
Yongzheng Fang ◽  
Na Zhang ◽  
Bobo Yang ◽  
...  

2015 ◽  
Vol 2015 ◽  
pp. 1-5
Author(s):  
Limin Dong ◽  
Jiatong Zhao ◽  
Qin Li ◽  
Zhidong Han

A highly intense yellow-emitting phosphorSr2-xBaxTiO4:Eu3+,Gd3+peaking at 593–611 nm was synthesized by the sol-gel method. XRD and SEM show that the samples are single phase and have irregular shape. The excitation wavelength matches well with that of the emission of the blue-light-emitting diode. The emission peaks at 593 and 611 nm are attributed to the transitions from the5D0-7F1and5D0-7F2ofEu3+ions, respectively.Gd3+was used as sensitizer, aiming at increasing the luminous intensity. A certain amount ofSr2+andBa2+is contributed to the intensity of light emission.


2000 ◽  
Vol 325 (1-3) ◽  
pp. 251-256 ◽  
Author(s):  
J.P Yang ◽  
Y.D Jin ◽  
P.L Heremans ◽  
R Hoefnagels ◽  
P Dieltiens ◽  
...  

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