Surfactant effect on and luminescence tuning of lanthanide-doped ScPO₄·2H₂O microparticles

Abstract

UV-excited luminescence patterns of ‘IAM’ generated using ScPO4·2H2O:Ce,Tb(4%,12%) and ScPO4·2H2O:Ce,Eu(4%,12%) microparticles as green and red display materials, respectively.

Luminescence in external dopant-free scandium-phosphorus vanadate solid solution: a spectroscopic and theoretical investigation

“…As a result, diverse LnBO 4 -related applications, such as laser host materials, 16 high-pressure mercury lamps, 17 color-television tubes, 18 infrared light detectors, 19 photocatalysis, 20 and ultrasonic generators, 21 have been discovered. Among the LnBO 4 crystals, zircon-type ScVO 4 and ScPO 4 crystals are two host materials particularly desirable for single trivalent RE (e.g., Eu 3+ /Tb 3+ , [22][23][24] Dy 3+ , 23 Ce 3+ /Er 3+ 23,24 ) and non-RE (e.g., Bi 3+ 26-28 ) dopants, or multiple dopants coupled by these RE and non-RE ions (e.g., Eu 3+ -Tb 3+ /Sm 3+ /Tm 3+ , [22][23][24] Eu 3+ -Bi 3+ 29 ). Accordingly, a variety of emission colors, such as green from Tb 3+ , 22 red from Eu 3+ , 23 blue from Tm 3+ , 27 and reddish/red from Sm 3+ 24 or Bi 3+ , 28 along with tunable colors from a combination of these dopants' emissions, 22,27,30 can be achieved using the ScVO 4 and ScPO 4 hosts.…”

Physical Manipulation of Lanthanide‐Activated Photoluminescence

“…[19][20][21][22] In order to meet individual application requirements, researchers have been exploring proper control of luminescent properties such as lifetime, intensity, and emission peaks, of lanthanide materials. For example, co-doping of Ce 3+ with Tb 3+ and Eu 3+ at different concentrations within ScPO 4 ·2H 2 O microparticles allows manipulation of the emission wavelengths, intensity, and lifetime [37] ; Increasing the concentration of Tm 3+ /Er 3+ in NaYbF 4 nanoparticles could impact the energy transfer process between sensitizer Yb 3+ and activator Tm 3+ /Er 3+ , leading to the upconversion color tuning from blue/green to red [38] ; Zhuo et al [39] distributed multiple activators (Tm 3+ , Er 3+ , and Ho 3+ ) into spatially separated layers in one single KSc 2 F 7 nanorod to effectively restrain the deleterious energy transfer between these activators and enhance their www.advancedsciencenews.com www.ann-phys.org upconversion luminescence. [27] Thanks to the robust chemical synthesis methodologies developed for both bulk and micro/nanoscale materials, it is comparatively easy to manipulate the luminescent properties by means of modulating the composition, crystallographic parameters, sensitizer and activator ions distribution, size, morphology, and surface defects of luminescent materials.…”

Proximity Matrix Completion and Ranking Ant Colony Optimization technique in Semantic web

“…Many existing methods were conducted to increases the performance of the query process with low cost [5,6]. The three major challenges still need to solved in the semantic web process to increase performance [7,8].…”