Organic cation directed hybrid lead halides of zero-dimensional to two-dimensional structures with tunable photoluminescence properties

2019 ◽  
Vol 6 (10) ◽  
pp. 2709-2717 ◽  
Author(s):  
Cheng-Yang Yue ◽  
Hai-Xiao Sun ◽  
Quan-Xiu Liu ◽  
Xin-Ming Wang ◽  
Zhao-Shuo Yuan ◽  
...  
Keyword(s):  
Organic Cation ◽  
Stokes Shift ◽  
Luminescence Properties ◽  
Two Dimensional ◽  
Photoluminescence Properties ◽  
Organic Hybrid ◽  
Yellow Orange

A series of new inorganic–organic hybrid lead halides have been solvothermally synthesized and characterized with tunable luminescence properties from yellow, orange to red emissions with the largest reported Stokes shift.

The Emission Property of Phosphors LEDs Based on ZnCuInS/ZnSe/ZnS Quantum Dots

2014 ◽  
Vol 989-994 ◽  
pp. 623-625
Author(s):  
Ke Bi ◽  
Wen Yan Liu ◽  
Tian Yue Xu ◽  
Tie Qiang Zhang ◽  
Yu Zhang
Keyword(s):  
Quantum Dots ◽  
Photoluminescence Spectrum ◽  
Stokes Shift ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
Red Emission ◽  
Light Emitting ◽  
Quantum Size ◽  
Gan Led ◽  
Photoluminescence Peak

.In this research, ZnCuInS/ZnSe/ZnS quantum dots (QDs) have been studied as an excellent red emitting source for blue GaN LED because of its non-toxic deep red emmission, and large Stokes shift properties. In the paper ZnCuInS/ZnSe/ZnS core/shell quantum dots were prepared with the particle size of 4.5nm. According to the measurement of photoluminescence spectrum emitted by ZnCuInS/ZnSe/ZnS core/shell quantum dots, the emitting peak of 700 nm and the full was achieved as red emitter.It was found that absorption edge and photoluminescence peak shifted to shorter wavelength with decreasing the nanocrystal size due to quantum size effect.Meanwhile, we were prepared ZnCuInS/ZnSe/ZnS core/shell quantum dot light emitting diodes and their photoluminescence properties were studied. After the suitable bias was applied on the films, increasing the ZnCuInS/ZnSe/ZnS QDs concentration in the blue GaN chips, red emission increased with decreasing LED’s blue light.

Magnetic double-tartaric bridging mono-lanthanide substituted phosphotungstates with photochromic and switchable luminescence properties

2016 ◽  
Vol 4 (23) ◽  
pp. 5424-5433 ◽  
Author(s):  
Pengtao Ma ◽  
Feng Hu ◽  
Rong Wan ◽  
Yu Huo ◽  
Dongdi Zhang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Luminescence Properties ◽  
Crystalline Materials ◽  
Organic Hybrid

A series of inorganic–organic hybrid multifunctional crystalline materials constructed using double-tartaric bridging mono-lanthanide substituted phosphotungstates display reversible photochromic, switchable luminescence, and magnetic properties.

The Effect of Organic Cation Dynamics on the Optical Properties in (PEA)2(MA)[Pb2I7] Perovskite Dimorphs

2021 ◽  
Author(s):  
Lekina Yulia ◽  
Sai Dintakurti ◽  
Benny Febriansyah ◽  
David George Bradley ◽  
Jiaxu Yan ◽  
...  
Keyword(s):  
Phase Transition ◽  
Optical Properties ◽  
Raman Scattering ◽  
Organic Cation ◽  
Two Dimensional ◽  
Lead Iodide ◽  
Temperature Dependent ◽  
Hybrid Perovskite

Two-dimensional (2D) phenylethyl ammonium (PEA+)-methyl ammonium (MA+) lead iodide ((PEA)2(MA)[Pb2I7]) hybrid perovskite exists as temperature-dependent dimorphs exhibiting an ill-defined phase transition occurring over 150 - 200 K range. Raman scattering,...

Preparation and luminescence properties of a M16 heterometallic coinage metal chalcogenide cluster

2020 ◽  
Vol 49 (3) ◽  
pp. 593-597 ◽  
Author(s):  
Alexander M. Polgar ◽  
Yannick J. Franzke ◽  
Sergei Lebedkin ◽  
Florian Weigend ◽  
John F. Corrigan
Keyword(s):  
Solid State ◽  
Luminescence Properties ◽  
Coinage Metal ◽  
Metal Chalcogenide ◽  
Yellow Orange

A hexadeca-nuclear, N-heterocyclic carbene stabilized gold(i)–copper(i)-sulfido cluster is reported, which emits yellow-orange in the solid state.

scholarly journals Energy Transfer between Tm-Doped Upconverting Nanoparticles and a Small Organic Dye with Large Stokes Shift

Biosensors ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 9 ◽  
Author(s):  
Anna López de Guereñu ◽  
Philipp Bastian ◽  
Pablo Wessig ◽  
Leonard John ◽  
Michael U. Kumke
Keyword(s):  
Energy Transfer ◽  
Stokes Shift ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Photoluminescence Properties ◽  
Decay Kinetics ◽  
Transfer Processes ◽  
Surface Quenching ◽  
Low Toxicity ◽  
Ion Emission

Lanthanide-doped upconverting nanoparticles (UCNP) are being extensively studied for bioapplications due to their unique photoluminescence properties and low toxicity. Interest in RET applications involving UCNP is also increasing, but due to factors such as large sizes, ion emission distributions within the particles, and complicated energy transfer processes within the UCNP, there are still many questions to be answered. In this study, four types of core and core-shell NaYF4-based UCNP co-doped with Yb3+ and Tm3+ as sensitizer and activator, respectively, were investigated as donors for the Methyl 5-(8-decanoylbenzo[1,2-d:4,5-d′]bis([1,3]dioxole)-4-yl)-5-oxopentanoate (DBD-6) dye. The possibility of resonance energy transfer (RET) between UCNP and the DBD-6 attached to their surface was demonstrated based on the comparison of luminescence intensities, band ratios, and decay kinetics. The architecture of UCNP influenced both the luminescence properties and the energy transfer to the dye: UCNP with an inert shell were the brightest, but their RET efficiency was the lowest (17%). Nanoparticles with Tm3+ only in the shell have revealed the highest RET efficiencies (up to 51%) despite the compromised luminescence due to surface quenching.

(C 6 H 13 NH 3 ) 2 (NH 2 CHNH 2 )Pb 2 I 7 : A Two‐dimensional Bilayer Inorganic–Organic Hybrid Perovskite Showing Photodetecting Behavior

2019 ◽  
Vol 14 (9) ◽  
pp. 1530-1534 ◽  
Author(s):  
Yuyin Wang ◽  
Xitao Liu ◽  
Lina Li ◽  
Chengmin Ji ◽  
Zhihua Sun ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Organic Hybrid ◽  
Hybrid Perovskite
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