Luminescent materials for modern light sources

Зак, Павел; Lapina, V. A.; Павич, Т. А.; Trofimov, Aleksei V.; Трофимова, Н. Н.; Tsaplev, Yu. B.

doi:10.1070/rcr4735

Cited by 26 publications

(17 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Luminescent materials could somehow absorb electrical, optical, chemical, thermal, or mechanical energy and turn it into light emission through a radiative transition. In the last centuries, researchers have been working persistently on optimizing of preparation technique, exploring new materials to meet the rising demand for high-performance luminescent materials in applications such as lighting (Meyer and Tappe, 2015;Xu et al, 2016;Zak et al, 2017), display (Withnall et al, 2011;Ballato et al, 2013), sensing (Eliseeva and Bunzli, 2010;Olawale et al, 2011;Wang et al, 2013;Hu et al, 2014), optoelectronics (Li et al, 2015(Li et al, , 2017, and anti-counterfeiting (Zhang et al, 2018a). While pursuing its state-of-the-art materials by realizing one mode of energy transformation, one single material that could efficiently transform multiple types of energy to light emission has entered people's vision.…”

Section: Introductionmentioning

confidence: 99%

Luminescence in Manganese (II)-Doped SrZn2S2O Crystals From Multiple Energy Conversion

Mao

Wang

et al. 2020

Front. Chem.

View full text Add to dashboard Cite

Under the excitation of ultraviolet, X-ray, and mechanical stress, intense orange luminescence (Mn 2+ , 4 T 1 → 6 A 1) can be generated in Mn 2+-doped SrZn 2 S 2 O crystal in orthorhombic space group of Pmn2 1. Herein, the multiple energy conversion in SrZn 2 S 2 O:Mn 2+ , that is, photoluminescence (PL), X-ray-induced luminescence, and mechanoluminescence, is investigated. Insight in luminescence mechanisms is gained by evaluating the Mn 2+ concentration effects. Under the excitation of metal-to-ligand charge-transfer transition, the most intense PL is obtained. X-ray-induced luminescence shows similar features with PL excited by band edge UV absorption due to the same valence band to conduction band transition nature. Benefiting much from trap levels introduced by Mn 2+ impurities, the quenching behavior mechanoluminescence is more like the directly excited PL from Mn 2+ d-d transitions. Interestingly, this concentration preference leads to varying degrees of spectral redshift in each mode luminescence. Further, SrZn 2 S 2 O:Mn 2+ exhibits a good linear response to the excitation power, which makes it potential candidates for applications in X-ray radiation detection and mechanical stress sensing.

show abstract

Section: Introductionmentioning

confidence: 99%

Luminescence in Manganese (II)-Doped SrZn2S2O Crystals From Multiple Energy Conversion

Mao

Wang

et al. 2020

Front. Chem.

View full text Add to dashboard Cite

show abstract

“…The similar behavior of coumarins 314, 334, and 343 observed in this work is conditioned by the choice of such compounds from the entire variety of coumarins. [22,23] In addition to their spectral and luminescent properties, these luminophores should fulfill the following photochemical prerequisites. The selected coumarins should not contain N-H bonds to avoid the excited-state proton transfer, the reaction well-known for 7-amino coumarins.…”

Section: Resultsmentioning

confidence: 99%

“…The similar behavior of coumarins 314, 334, and 343 observed in this work is conditioned by the choice of such compounds from the entire variety of coumarins . In addition to their spectral and luminescent properties, these luminophores should fulfill the following photochemical prerequisites.…”

Section: Resultsmentioning

confidence: 99%

Exploring the utility of coumarins‐based luminescent spectra converters

Lapina

Павич

Першукевич

et al. 2017

J of Physical Organic Chem

View full text Add to dashboard Cite

The physicochemical aspects of functioning the luminescent converters for a rational modification of the emission spectra of light-emitting diodes are considered. These converters use laser dyes' coumarins 314, 334, and 343 to transfigure the primary light-emitting diode spectrum. The fine control of the emission spectra of the mentioned coumarins in polymeric matrices was achieved by introducing nonionic detergents. The relevant characteristics of the photochemical persistence of coumarins in the polymer layers are acquired.

show abstract

“…The methods described above are powerful for molding ceramics from prospective inorganic materials that would come in broad use in the near future [213][214][215][216][217][218]. An innovative composite material has been reported very recently, which demonstrated an extremely high resistance against abrasive wear under the action of cutting tools and water jets [219].…”

Section: Green Ceramic Machiningmentioning

confidence: 99%

Methods Used for the Compaction and Molding of Ceramic Matrix Composites Reinforced with Carbon Nanotubes

Мешалкин

Belyakov

2020

Processes

View full text Add to dashboard Cite

Ceramic matrix composites reinforced with carbon nanotubes are becoming increasingly popular in industry due to their astonishing mechanical properties and taking into account the fact that advanced production technologies make carbon nanotubes increasingly affordable. In the present paper, the most convenient contemporary methods used for the compaction of molding masses composed of either technical ceramics or ceramic matrix composites reinforced with carbon nanotubes are surveyed. This stage that precedes debinding and sintering plays the key role in getting pore-free equal-density ceramics at the scale of mass production. The methods include: compaction in sealed and collector molds, cold isostatic and quasi-isostatic compaction; dynamic compaction methods, such as magnetic pulse, vibration, and ultrasonic compaction; extrusion, stamping, and injection; casting from aqueous and non-aqueous slips; tape and gel casting. Capabilities of mold-free approaches to produce precisely shaped ceramic bodies are also critically analyzed, including green ceramic machining and additive manufacturing technologies.

show abstract

Luminescent materials for modern light sources

Cited by 26 publications

References 19 publications

Luminescence in Manganese (II)-Doped SrZn2S2O Crystals From Multiple Energy Conversion

Luminescence in Manganese (II)-Doped SrZn2S2O Crystals From Multiple Energy Conversion

Exploring the utility of coumarins‐based luminescent spectra converters

Methods Used for the Compaction and Molding of Ceramic Matrix Composites Reinforced with Carbon Nanotubes

Contact Info

Product

Resources

About