Manipulating trap filling of persistent phosphors upon illumination by using a blue light-emitting diode

2020 ◽  
Vol 8 (21) ◽  
pp. 6988-6992 ◽  
Author(s):  
Qingqing Gao ◽  
Chenlin Li ◽  
Yichun Liu ◽  
Jiahua Zhang ◽  
Xiao-jun Wang ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diode ◽  
Information Storage ◽  
Optical Information ◽  
Light Emitting ◽  
Optical Information Storage ◽  
Trap Filling

Developing a conceptual “write”/“read” technology for optical information storage of persistent phosphors is necessary but often underestimated.

NaMgF 3 :Tb 3+ @NaMgF 3 Nanoparticles Containing Deep Traps for Optical Information Storage

2021 ◽  
pp. 2100624
Author(s):  
Yikuang Wang ◽  
Dunrong Chen ◽  
Yixi Zhuang ◽  
Wenjing Chen ◽  
Hangyu Long ◽  
...  
Keyword(s):  
Information Storage ◽  
Optical Information ◽  
Deep Traps ◽  
Optical Information Storage

Ferrimagnetic Cobalt Ferrite Films Prepared by the Sol-Gel Process

1993 ◽  
Vol 313 ◽  
Author(s):  
Eva M. Wong ◽  
Haixing Zheng ◽  
John D. Mackenzie ◽  
T. Tsuchiya
Keyword(s):  
Remanent Magnetization ◽  
Cobalt Ferrite ◽  
Amorphous Film ◽  
Heat Treating ◽  
Fused Silica ◽  
Information Storage ◽  
Degree Of Crystallinity ◽  
Optical Information ◽  
Ferrite Films ◽  
Optical Information Storage

ABSTRACTFerrimagnetic oxide films have been shown to have potential for use as Magneto-optical information storage Materials. Cobalt ferrite films are particularly interesting for magneto optical information storage due to their high magneto optical rotation [1]. In this work, synthesized soluble cobalt (II) and iron (III) Methoxyethoxides were mixed in stoichiometric ratios for use as Co and Fe precursors in the preparation of CoFe2O4ferrimagnetic films. The decomposition of the precursors was characterized by thermogravimetric analysis.CoFe2O4 films were prepared by the dip coating technique using fused silica substrates. These films were then heat treated at temperatures ranging from 200°C to 600°C to study the transformation from an amorphous film to a crystalline film as determined by x-ray diffraction. The Magnetic hysteresis behavior of the films as a function of heat treating temperature and hence crystallinity was also studied. As a general trend, films having a greater degree of crystallinity exhibited larger values of saturation magnetization and remanent Magnetization. The amorphous film was found to exhibit the highest coercive field, but low values of saturation and remanent Magnetization. The effect of heat treating under the influence of a magnetic field of 1.88 kÖe was found to enhance crystallization only slightly and had very little effect on the magnetic properties of the film.

scholarly journals In vitro and in vivo Efficacy of New Blue Light Emitting Diode Phototherapy Compared to Conventional Halogen Quartz Phototherapy for Neonatal Jaundice

2005 ◽  
Vol 20 (1) ◽  
pp. 61 ◽  
Author(s):  
Yun Sil Chang ◽  
Jong Hee Hwang ◽  
Hyuk Nam Kwon ◽  
Chang Won Choi ◽  
Sun Young Ko ◽  
...  
Keyword(s):  
Blue Light ◽  
Neonatal Jaundice ◽  
Light Emitting Diode ◽  
In Vivo Efficacy ◽  
Light Emitting

scholarly journals Operando direct observation of spin-states and charge-trappings of blue light-emitting-diode materials in thin-film devices

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Fumiya Osawa ◽  
Kazuhiro Marumoto
Keyword(s):  
Blue Light ◽  
High Performance ◽  
Density Functional ◽  
Light Emitting Diode ◽  
Green Light ◽  
Spin States ◽  
Light Emitting ◽  
Full Color ◽  
Color Displays ◽  
Materials Used

Abstract Spin-states and charge-trappings in blue organic light-emitting diodes (OLEDs) are important issues for developing high-device-performance application such as full-color displays and white illumination. However, they have not yet been completely clarified because of the lack of a study from a microscopic viewpoint. Here, we report operando electron spin resonance (ESR) spectroscopy to investigate the spin-states and charge-trappings in organic semiconductor materials used for blue OLEDs such as a blue light-emitting material 1-bis(2-naphthyl)anthracene (ADN) using metal–insulator–semiconductor (MIS) diodes, hole or electron only devices, and blue OLEDs from the microscopic viewpoint. We have clarified spin-states of electrically accumulated holes and electrons and their charge-trappings in the MIS diodes at the molecular level by directly observing their electrically-induced ESR signals; the spin-states are well reproduced by density functional theory. In contrast to a green light-emitting material, the ADN radical anions largely accumulate in the film, which will cause the large degradation of the molecule and devices. The result will give deeper understanding of blue OLEDs and be useful for developing high-performance and durable devices.

scholarly journals Side-chain Liquid Crystalline Polyesters for Optical Information Storage

1996 ◽  
Vol 7 (9) ◽  
pp. 768-776 ◽  
Author(s):  
P. S. Ramanujam ◽  
Christian Holme ◽  
Søren Hvilsted ◽  
Marianne Pedersen ◽  
Fulvio Andruzzi ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Information Storage ◽  
Side Chain ◽  
Optical Information ◽  
Optical Information Storage

Optimization and evaluation of a blue light photoinitiating system for textile inkjet printing

2018 ◽  
Vol 89 (10) ◽  
pp. 1964-1974
Author(s):  
Yi Huang ◽  
Guangdong Sun ◽  
Yating Ji ◽  
Dapeng Li ◽  
Qinguo Fan ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diode ◽  
Absorption Efficiency ◽  
Polymerization Rate ◽  
Nozzle Clogging ◽  
Light Emitting ◽  
Custom Made ◽  
Light Curing ◽  
Set Up ◽  
Pigment Ink

A blue light curing process was developed to solve the nozzle clogging challenge commonly encountered in conventional textile pigment printing, by using camphorquinone (CQ) and ethyl-4-dimethylaminobenzoate (EDMAB) as a photoinitiator combination and substituting oligomers and monomers for a polymeric binder. High light absorption efficiency was insured by closely matching the spectrum of the photoinitiator with a custom-made blue light light-emitting diode set-up. Kinetic analyses of such a CQ/EDMAB system indicated that the maximum polymerization rate of the monomer was proportional to [PI]0.5 and [I0]0.5, while excessive high photoinitiator concentration (>1 wt%) will decrease the polymerization rate because of the “filter effect.” With optimized blue light curable pigment ink formula and irradiation conditions, the photocurable pigment printed fabrics exhibited uniform and vibrant colors, clear outlines, and excellent wet and dry rubbing fastness of grades 4 and 4–5, respectively.

scholarly journals Homogeneous ZnO nanowire arrays p-n junction for blue light-emitting diode applications

2019 ◽  
Vol 27 (16) ◽  
pp. A1207 ◽  
Author(s):  
Mingming Su ◽  
Tanglei Zhang ◽  
Jun Su ◽  
Zhao Wang ◽  
Yongming Hu ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diode ◽  
Nanowire Arrays ◽  
Zno Nanowire ◽  
Light Emitting ◽  
Zno Nanowire Arrays
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