scholarly journals Optimization of the Synthesis and Energy Transfer of Ca2MgWO6:Cr3+,Nd3+

Inorganics ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 23
Author(s):  
Viktor Anselm ◽  
Thomas Jüstel
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Raw Materials ◽  
Broad Band ◽  
Line Emission ◽  
Infrared Emission ◽  
Infrared Range ◽  
Visible Radiation ◽  
Solid State Method ◽  
Efficient Energy Transfer

This work pertains to Cr3+ and Nd3+ co-activated Ca2MgWO6 phosphors synthesized by high temperature solid-state method using oxides and carbonates as raw materials. All luminescent samples according to Ca2MgWO6:Cr3+,Nd3+ include Cr3+ for the absorption of UV and visible radiation (230–800 nm) prior to energy transfer to Nd3+. As a result of the energy transfer between Cr3+ and Nd3+, we observe line emission originating from Nd3+ in the near infrared range additionally to the broad band near infrared emission from Cr3+ assigned to the spin-allowed 4T2 → 4A2 transition. The energy transfer from Cr3+ to Nd3+ is discussed via the variations of the lifetime data of Cr3+ and Nd3+. The strong absorption of Cr3+ in the ultraviolet range and the efficient energy transfer from Cr3+ to Nd3+ indicate that the herein presented material type can serve as a radiation converter for near infrared region light emitting diodes (NIR-LEDs) comprising an UV-A emitting (Al,Ga)N chip.

Effectively realizing broadband spectral conversion of UV/visible to near-infrared emission in (Na,K)Mg(La,Gd)TeO6:Mn4+,Nd3+,Yb3+ materials for c-Si solar cells via efficient energy transfer

2018 ◽  
Vol 6 (27) ◽  
pp. 7302-7310 ◽  
Author(s):  
Kai Li ◽  
Rik Van Deun
Keyword(s):  
Energy Transfer ◽  
Solar Cells ◽  
Near Infrared ◽  
Infrared Emission ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Si Solar Cells ◽  
Uv Visible ◽  
Near Infrared Emission ◽  
Spectral Conversion

A series of (Na,K)Mg(La,Gd)TeO6:Mn4+,Nd3+,Yb3+ materials were prepared and the broadband spectral conversion of UV/visible to near-infrared emission for c-Si solar cells was effectively realized via efficient energy transfer processes.

scholarly journals Efficient near-infrared quantum cutting by cooperative energy transfer in Bi3TeBO9:Nd3+ phosphors

2022 ◽  
Author(s):  
T. Zhezhera ◽  
P. Gluchowski ◽  
M. Nowicki ◽  
M. Chrunik ◽  
A. Majchrowski ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Spectral Range ◽  
Near Infrared ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Infrared Emission ◽  
Fluorescence Decay ◽  
Visible Spectral Range ◽  
Visible Radiation ◽  
Quantum Cutting

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

scholarly journals Intense near-infrared emission from ZnO-LiYbO_2 hybrid phosphors through efficient energy transfer from ZnO to Yb^3+

2010 ◽  
Vol 18 (2) ◽  
pp. 639 ◽  
Author(s):  
Song Ye ◽  
Nan Jiang ◽  
Feng He ◽  
Xiaofeng Liu ◽  
Bin Zhu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Infrared Emission ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Near Infrared Emission

Ab Initio Two-sites Occupancy and Broadband Near-Infrared Emission of Cr3+ in Li2MgZrO4

2021 ◽  
Author(s):  
Xue Zhou ◽  
Jinmeng Xiang ◽  
Jiming Zheng ◽  
Xiaoqi Zhao ◽  
Hao Suo ◽  
...  
Keyword(s):  
Plant Growth ◽  
Ab Initio ◽  
Light Source ◽  
Near Infrared ◽  
Broad Band ◽  
Infrared Emission ◽  
Night Vision ◽  
Light Emitting ◽  
Non Destructive ◽  
Near Infrared Emission

Near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs) light source have great potential in non-destructive detection, promoting plant growth and night vision applications, while the discovery of a broad-band NIR phosphor still...

Sensitizing effect of Yb3+ on near-infrared fluorescence emission of Cr4+-doped calcium aluminate glasses

2000 ◽  
Vol 15 (2) ◽  
pp. 278-281 ◽  
Author(s):  
Yong Gyu Choi ◽  
Kyong Hon Kim ◽  
Yong Seop Han ◽  
Jong Heo
Keyword(s):  
Energy Transfer ◽  
Calcium Aluminate ◽  
Near Infrared ◽  
Fluorescence Emission ◽  
Dipole Interaction ◽  
Energy Transfer Mechanism ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Sensitizing Effect ◽  
Decay Behavior

We have demonstrated that an efficient energy transfer takes place from Yb3+ to Cr4+ in calcium aluminate glasses. Yb3+ improves excitation efficiency at around 980 nm, enhancing emission intensity of Cr4+ fluorescence at 1.2–1.6 μm. Nonradiative energy transfer via electric dipole–dipole interaction between ytterbium and chromium ions was found to be dominant over radiative Yb3+ → Cr4+ energy transfer. A diffusionlimited energy transfer mechanism well explains the decay behavior of Yb3+/Cr4+- codoped glasses. This codoping scheme may be applicable to other Cr4+-containing crystals and glasses.

Enhanced near-infrared emission by co-doping Ce3+ in Ba2Y(BO3)2Cl:Tb3+, Yb3+ phosphor

RSC Advances ◽  
2015 ◽  
Vol 5 (36) ◽  
pp. 28299-28304 ◽  
Author(s):  
Jin Zhao ◽  
Chongfeng Guo ◽  
Ting Li
Keyword(s):  
Solar Cells ◽  
Near Infrared ◽  
Broad Band ◽  
Infrared Emission ◽  
Silicon Solar Cells ◽  
Co Doping ◽  
Band Absorption ◽  
Down Conversion ◽  
Near Infrared Emission

Ba2Y(BO3)2Cl:Ce3+, Tb3+, Yb3+ with intense near-infrared emission and broad-band absorption in n-UV region is a promising down-conversion solar spectral convertor to enhance the efficiency of the silicon solar cells.

scholarly journals Lanthanide near-infrared emission and energy transfer in layered WS2/MoS2 heterostructure

2019 ◽  
Vol 63 (4) ◽  
pp. 575-581 ◽  
Author(s):  
Gongxun Bai ◽  
Yongxin Lyu ◽  
Zehan Wu ◽  
Shiqing Xu ◽  
Jianhua Hao
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission

Tunable near-infrared emission of binary nano- and mesoscale GUMBOS

RSC Advances ◽  
2014 ◽  
Vol 4 (54) ◽  
pp. 28471-28480 ◽  
Author(s):  
Atiya N. Jordan ◽  
Noureen Siraj ◽  
Susmita Das ◽  
Isiah M. Warner
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Förster Resonance Energy Transfer ◽  
Near Infrared Emission ◽  
Tunable Emission ◽  
Förster Resonance

Mixtures of GUMBOS were used to form binary nanomaterials with tunable emission spectra due to Förster resonance energy transfer (FRET).

Sign in / Sign up

Export Citation Format

Share Document