Ag+-induced photoluminescence enhancement in lanthanide post-functionalized MOFs and Ag+ sensing

2017 ◽  
Vol 19 (13) ◽  
pp. 9174-9180 ◽  
Author(s):  
Nana Sun ◽  
Bing Yan
Keyword(s):  
White Light ◽  
Single Phase ◽  
Light Emitters ◽  
Highly Sensitive ◽  
Photoluminescence Enhancement ◽  
Co Doped

Single-phase white-light emitters based on 4d–4f heterometallic co-doped MOFs can be realized, and Sm-MIL-61 shows more highly sensitive and selective sensing towards Ag+.

Tunable white-light emission and energy transfer in single-phase Bi3+,Eu3+ co-doped Ba9Y2Si6O24 phosphors for UV w-LEDs

2019 ◽  
Vol 213 ◽  
pp. 494-503 ◽  
Author(s):  
Hai Guo ◽  
Zhigang Zheng ◽  
Liming Teng ◽  
Rongfei Wei ◽  
Fangfang Hu
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Single Phase ◽  
Light Emission ◽  
White Light Emission ◽  
Co Doped

Eu3+/Eu2+/Tb3+ co-activated single-phase Gd2O2S: A high-performance white light emitting phosphor for light emitting diode

2021 ◽  
Vol 11 (1) ◽  
pp. 54-62
Author(s):  
Jinpeng Xie ◽  
Bonan Liu ◽  
Qingtao Qong ◽  
Zhicheng Xu ◽  
Zhiqiang Jin ◽  
...  
Keyword(s):  
White Light ◽  
High Performance ◽  
Single Phase ◽  
Light Emission ◽  
Light Emitting Diode ◽  
Energy Transfer Mechanism ◽  
Excitation Spectra ◽  
Phosphor Material ◽  
Light Emitting ◽  
Co Doped

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.

Tunable white-light emission of Dy3+ or/and Eu3+ co-doped single-phase LiY(PO3)4 phosphors for NUV-WLEDs

2019 ◽  
Vol 791 ◽  
pp. 833-838 ◽  
Author(s):  
Zhong-Yue Wang ◽  
Bing-Lei Shen ◽  
Ke-Han Yu ◽  
Zhen Yang ◽  
Rui-Lin Zheng ◽  
...  
Keyword(s):  
White Light ◽  
Single Phase ◽  
Light Emission ◽  
White Light Emission ◽  
Co Doped

Single phase M+ (M = Li, Na, K), Dy3+ co-doped KSrBP2O8 white light emitting phosphors

2015 ◽  
Vol 618 ◽  
pp. 484-487 ◽  
Author(s):  
Feng Zhang ◽  
Ting Zhang ◽  
Guoqiang Li ◽  
Weifeng Zhang
Keyword(s):  
White Light ◽  
Single Phase ◽  
Light Emitting ◽  
Co Doped

Correlated color temperature tunability and energy transfer phenomenon in the NaBaBO3:Dy3+/Eu3+ phosphor for white light application

2015 ◽  
Vol 08 (06) ◽  
pp. 1550077 ◽  
Author(s):  
Jianghui Zheng ◽  
Qijin Cheng ◽  
Cheng Zheng ◽  
Guo Chen ◽  
Feng Shi ◽  
...  
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Single Phase ◽  
Color Temperature ◽  
Light Emitting ◽  
Transfer Phenomenon ◽  
Near Ultraviolet ◽  
Cie Chromaticity ◽  
Co Doped ◽  
The Eu

NaBa 0.97-x BO 3 0.03 Dy 3+, x Eu 3+(0 ≤ x ≤ 0.09) single-phase white phosphors with tunable correlated color temperature (CCT) were synthesized using a conventional solid state reaction method. The phase structure and luminescence properties of the as-prepared samples were investigated. The Dy 3+, Eu 3+ doped and Dy 3+/ Eu 3+ co-doped NaBaBO 3 phosphors excited by 361 nm show two blue and yellow emissions corresponding to the 4 F 9/2 → 6 H 15/2 and 4 F 9/2 → 6 H 13/2 transitions of Dy 3+ ions and two red emissions due to the 5 D 0 → 4 F J (J = 1, 2) transitions of Eu 3+ ions. Under 361-nm light excitation, the NaBa 0.97-x BO 3 0.03 Dy 3+, x Eu 3+(0 ≤ x ≤ 0.09) phosphors feature a white light emitting property. Through the Commission Internationale de L'Eclairage (CIE) chromaticity analysis and CCT calculation, the CIE chromaticity coordinates of the emission light are all located in the white region and can be tuned from bluish white light to reddish white light when the Eu 3+ concentration increases, and the CCT values of the obtained samples can vary from 5514.31 K to 8269.42 K. Furthermore, the energy transfer phenomenon from Dy 3+ ions to Eu 3+ ions in Dy 3+/ Eu 3+ co-doped samples was also investigated. The results indicated that, through tuning the Eu 3+ concentration of the NaBaBO 3: Dy 3+/ Eu 3+ phosphors, the NaBaBO 3-based phosphor can act as a potential single-phase white emitting phosphor for the application in the near-ultraviolet (NUV) white light emitting diodes.

Generation of cold white light by using energy transfer process in single phase Ce3+/Tb3+ co-doped CaSrAl2SiO7 phosphor

2021 ◽  
Vol 135 ◽  
pp. 106682
Author(s):  
Shweta Sharma ◽  
Nameeta Brahme ◽  
D.P. Bisen ◽  
Pradeep Dewangan ◽  
Ritu Gupta
Keyword(s):  
Energy Transfer ◽  
Transfer Process ◽  
White Light ◽  
Single Phase ◽  
Energy Transfer Process ◽  
Co Doped

scholarly journals High Thermal Stability Apatite Phosphors Ca2La8(SiO4)6O2:Dy3+/Sm3+ for White Light Emission: Synthesis, Structure, Luminescence Properties and Energy Transfer

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ning Liu ◽  
Lefu Mei ◽  
Libing Liao ◽  
Jie Fu ◽  
Dan Yang
Keyword(s):  
Thermal Stability ◽  
Energy Transfer ◽  
White Light ◽  
Single Phase ◽  
Light Emission ◽  
High Thermal Stability ◽  
White Light Emission ◽  
Luminescence Properties ◽  
Potential Candidate ◽  
Co Doped

Abstract What ideal w-LED phosphors always aim to do is to achieve a single phase near-sunlight emission phosphor simultaneously with both high luminescence efficiency and high thermal stability at operation temperature. And It is well known that apatite compound phosphors are one of the most promising optical materials to realize those above because of their unique structure enhanced luminescence properties and thermal stability. Here, we synthesized a co-doped single phase apatite phosphors Ca2La8(SiO4)6O2:Dy3+/Sm3+ (CLSO:Dy3+/Sm3+) for white light emission, which was provided with excellent thermal stability and of which luminescence intensity at 150 °C still was 92 percentage of that at room temperature. Moreover, X-ray diffraction technique, Fourier transform infrared spectroscopy, scanning electron microscope were employed to characterization of phase structure and morphology, and consequently pure apatite structure and gravel-like morphology of phosphors were proved. Analysis of photoluminescence spectra indicated that concentration quenching effect exist in single-doped CLSO:Dy3+ phosphors owing to dipole-dipole interaction between Dy3+ ions. It is revealed that maybe exist Dy3+ ↔ Sm3+ bilateral non-radiative energy transfer processes in Dy3+/Sm3+ co-doped CLSO system by PL spectra and decay curves. And variation of Sm3+ ion concentration can control color emission, namely CIE chromaticity coordinates and correlated color temperature, finally to achieve white light emission (0.309,0.309) with CCT 6848 K, able to be a potential candidate for commercial lighting applications.

Complex crystal structure and photoluminescence of Bi3+-doped and Bi3+/Eu3+ co-doped Ca7Mg2Ga6O18

2021 ◽  
Author(s):  
Ju Li ◽  
Jinmei Huang ◽  
Pengfei Jiang ◽  
Wenliang Gao ◽  
Rihong Cong ◽  
...  
Keyword(s):  
Crystal Structure ◽  
White Light ◽  
Single Phase ◽  
Broad Band ◽  
High Quality ◽  
Light Emitting ◽  
Complex Crystal Structure ◽  
Indoor Lighting ◽  
Complex Crystal ◽  
Co Doped

Recently, broad-band white-light-emitting using Eu2+, Ce3+, or Bi3+ in multi-sites of a single-phase phosphor have drawn extensive attention due to their potential to realize high-quality indoor lighting. This work reports...

Tb3+/Eu3+/Tm3+ co-doped single-phase phosphors emitting close to standard white light

2021 ◽  
Vol 136 ◽  
pp. 106774
Author(s):  
Qiang Ren ◽  
Yujing Zhao ◽  
Xiulan Wu ◽  
Ou Hai
Keyword(s):  
White Light ◽  
Single Phase ◽  
Co Doped
Sign in / Sign up

Export Citation Format

Share Document