Host-sensitized luminescence properties of KLa5O5(VO4)2:Eu3+ for solid-state lighting applications

2016 ◽  
Vol 4 (30) ◽  
pp. 7277-7285 ◽  
Author(s):  
Marie Colmont ◽  
Sébastien Saitzek ◽  
Arturas Katelnikovas ◽  
Houria Kabbour ◽  
Jacob Olchowka ◽  
...  
Keyword(s):  
Solid State ◽  
Blue Emission ◽  
Solid State Synthesis ◽  
Solid State Lighting ◽  
Luminescence Properties ◽  
Sensitized Luminescence ◽  
Synthesis Route ◽  
Uv Excitation

K1La5−xEuxO5(VO4)2 compounds were prepared by a solid state synthesis route. Their luminescence properties were studied. The non-substituted sample that exhibits blue emission under UV excitation switched to orange/red as soon as a small amount of europium is inserted in the phosphor.

Luminescence properties of M2MgSi2O7:Eu2+ (M=Ca, Sr) phosphors and their effects on yellow and blue LEDs for solid-state lighting

2007 ◽  
Vol 30 (4) ◽  
pp. 571-578 ◽  
Author(s):  
Mei Zhang ◽  
Jing Wang ◽  
Weijia Ding ◽  
Qiuhong Zhang ◽  
Qiang Su
Keyword(s):  
Solid State ◽  
Solid State Lighting ◽  
Luminescence Properties

scholarly journals Polymer Thermal Treatment Production of Cerium Doped Willemite Nanoparticles: An Analysis of Structure, Energy Band Gap and Luminescence Properties

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1118
Author(s):  
Ibrahim Mustapha Alibe ◽  
Khamirul Amin Matori ◽  
Mohd Hafiz Mohd Zaid ◽  
Salisu Nasir ◽  
Ali Mustapha Alibe ◽  
...  
Keyword(s):  
Solid State ◽  
Thermal Treatment ◽  
Band Gap ◽  
Optical Band Gap ◽  
Dopant Concentration ◽  
Blue Emission ◽  
Green Emission ◽  
Band Gap Energy ◽  
Solid State Lighting ◽  
Gap Energy

The contemporary market needs for enhanced solid–state lighting devices has led to an increased demand for the production of willemite based phosphors using low-cost techniques. In this study, Ce3+ doped willemite nanoparticles were fabricated using polymer thermal treatment method. The special effects of the calcination temperatures and the dopant concentration on the structural and optical properties of the material were thoroughly studied. The XRD analysis of the samples treated at 900 °C revealed the development and or materialization of the willemite phase. The increase in the dopant concentration causes an expansion of the lattice owing to the replacement of larger Ce3+ ions for smaller Zn2+ ions. Based on the FESEM and TEM micrographs, the nanoparticles size increases with the increase in the cerium ions. The mean particles sizes were estimated to be 23.61 nm at 1 mol% to 34.02 nm at 5 mol% of the cerium dopant. The optical band gap energy of the doped samples formed at 900 °C decreased precisely by 0.21 eV (i.e., 5.21 to 5.00 eV). The PL analysis of the doped samples exhibits a strong emission at 400 nm which is ascribed to the transition of an electron from localized Ce2f state to the valence band of O2p. The energy level of the Ce3+ ions affects the willemite crystal lattice, thus causing a decrease in the intensity of the green emission at 530 nm and the blue emission at 485 nm. The wide optical band gap energy of the willemite produced is expected to pave the way for exciting innovations in solid–state lighting applications.

Particularities of trichloroethylene photocatalytic degradation over crystalline RbLaTa2O7 nanowire bundles grown by solid-state synthesis route

2019 ◽  
Vol 7 (1) ◽  
pp. 102789 ◽  
Author(s):  
Monica Raciulete ◽  
Florica Papa ◽  
Daisuke Kawamoto ◽  
Cornel Munteanu ◽  
Daniela C. Culita ◽  
...  
Keyword(s):  
Solid State ◽  
Photocatalytic Degradation ◽  
Solid State Synthesis ◽  
Synthesis Route

Synthesis and luminescence properties of a novel red-emitting phosphor Ba3La(PO4)3:Eu3+ for solid-state lighting

2013 ◽  
Vol 576 ◽  
pp. 236-241 ◽  
Author(s):  
Ruijin Yu ◽  
Hyeon Mi Noh ◽  
Byung Kee Moon ◽  
Byung Chun Choi ◽  
Jung Hyun Jeong ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Lighting ◽  
Luminescence Properties ◽  
Red Emitting Phosphor

scholarly journals Correction: Red-emitting phosphors APF6:Mn4+ (A = Cs+, Rb+, K+): synthesis, luminescence properties and application in solid-state lighting

2020 ◽  
Vol 49 (14) ◽  
pp. 4579-4579
Author(s):  
Yu Chen ◽  
Zhaofeng Yang ◽  
Qin Wang ◽  
Meizhu Rong ◽  
Qiang Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Lighting ◽  
Luminescence Properties ◽  
Dalton Trans

Correction for ‘Red-emitting phosphors APF6:Mn4+ (A = Cs+, Rb+, K+): synthesis, luminescence properties and application in solid-state lighting’ by Yu Chen et al., Dalton Trans., 2019, 48, 10901–10906.

scholarly journals Excitation-Independent Emission of Carbon Quantum Dot Solids

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Xuan-Dung Mai ◽  
Yen Thi Hai Phan ◽  
Van-Quang Nguyen
Keyword(s):  
Solid State ◽  
Solvothermal Method ◽  
Blue Emission ◽  
Carbon Quantum Dots ◽  
Solid State Lighting ◽  
Optical And Electrical Properties ◽  
Red Emission ◽  
Solid Films ◽  
Carbon Quantum Dot ◽  
S States

Solid assemblies of carbon quantum dots (CQDs) are important for diverse applications including LEDs, solar cells, and photosensors; their optical and electrical properties have not been explored yet. Herein, we used amphiphilic CQDs synthesized from citric acid and thiourea by a solvothermal method to fabricate CQD solid films. Optical properties of CQDs studied by UV-Vis and photoluminescence spectroscopies indicate that CQDs possess three different emission centers at 425 nm, 525 nm, and 625 nm originating from C sp2 states, N-states, and S-states, respectively. In a solid state, π-π stacking quenched the blue emission, while the red emission increased. Importantly, CQD films exhibited excitation independence, which is important to design solid-state lighting applications.

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