A tetraphenylethylene-based covalent organic polymer for highly selective and sensitive detection of Fe3+ and as a white light emitting diode

2019 ◽  
Vol 55 (82) ◽  
pp. 12328-12331 ◽  
Author(s):  
Han Zhang ◽  
Jie Zhou ◽  
Guo-Gang Shan ◽  
Guang-Fu Li ◽  
Chun-Yi Sun ◽  
...  
Keyword(s):  
Solid State ◽  
White Light ◽  
Light Emitting Diode ◽  
Sensitive Detection ◽  
Organic Polymer ◽  
Excellent Performance ◽  
Light Emitting

A new COP is synthesized, exhibiting excellent performance as an Fe3+ sensor with a LOD of 23.5 ppb, and solid-state illumination.

Orange- to green-emitting Li(Sr,Ca)4(BO3)3:Eu2+ phosphor: emission-tunable properties and white light emitting diode application

RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 82824-82831 ◽  
Author(s):  
Hua Yu ◽  
Degang Deng ◽  
Youjie Hua ◽  
Chenxia Li ◽  
Shiqing Xu
Keyword(s):  
High Temperature ◽  
Solid State ◽  
White Light ◽  
Solid State Reaction ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Tunable Properties

An emission-tunable phosphor, Eu2+-activated LiSr(4−x−y)Cax(BO3)3:yEu2+ phosphor, was synthesized by high temperature solid state reaction.

scholarly journals Ternary complex [Sm(acac)3(5-Br-2,2′-bpy)] for the solution-processed white polymer light-emitting diode (WPLED)

2020 ◽  
Author(s):  
Jiaxiang Liu
Keyword(s):  
Solid State ◽  
White Light ◽  
Ternary Complex ◽  
Light Emitting Diode ◽  
Primary Component ◽  
Solution Processed ◽  
Light Emitting ◽  
Full Color ◽  
Polymer Light Emitting Diode ◽  
The Ideal

In consideration of the Sm3þ-centered characteristic orange-light as the ideal color-primary component toward a dichromatic white-light, herein, through the doping of the complex [Sm(acac)3(5-Br-2,20-bpy)] (2; Hacac ¼ acetylacetone; 5-Br-2,2′-bpy ¼ 5-Br-2,20-bipyridine) into the PVK (PVK ¼ poly(N-vinyl-carbazole)) host, the obtained PVK@2 film (10:1, wt/wt) exhibits the straightforward solid-state white-light (ΦPL ¼ 6.7%). Further using the PVK@2 film (10:1; wt/wt) as the emitting layer, its singlecomponent solution-processed WPLED gives the electroluminescent performance (LMax of 360.9 cd/m2, ηMax c of 1.08 cd/A) satisfactory enough for portable full-color flat displays

scholarly journals White light emitting diode based on purely organic fluorescent to modern thermally activated delayed fluorescence (TADF) and perovskite materials

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Dipjyoti Das ◽  
Peddaboodi Gopikrishna ◽  
Debasish Barman ◽  
Ramesh Babu Yathirajula ◽  
Parameswar Krishnan Iyer
Keyword(s):  
White Light ◽  
Light Emitting Diode ◽  
Solution Process ◽  
Delayed Fluorescence ◽  
Organic Polymer ◽  
Modern Concept ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Synthesis Strategy

Abstract White organic/polymer light emitting diode (WOLED/WPLED) processed from solution has attracted significant research interest in recent years due to their low device production cost, device flexibility, easy fabrication over large area including roll to roll and ability to print in various designs and shapes providing enormous design possibilities. Although WOLEDs fabricated using solution process lack their thermally evaporated counterparts in terms of device efficiency, remarkable progress has been made in this regard in recent years by utilizing new materials and device structures. In the present review, we have summarized and extrapolated an excellent association of old and modern concept of cost-effective materials and device structure for realization of white light. In particular, this article demonstrated and focused on design, and development of novel synthesis strategy, mechanistic insights and device engineering for solution process low cost WOLEDs device. Herein, an overview of the prevailing routes towards white light emitting devices (WLEDs) and corresponding materials used, including polymer based WLED, small molecules emitters based thermally activated delayed fluorescence (TADF), perovskite light-emitting diodes (PeLEDs) and hybrid materials based LEDs, color down-converting coatings with corresponding best efficiencies ever realized. We presume that this exhaustive review on WLEDs will offer a broad overview of the latest developments on white SSL and stonework the approach en route for innovations in the immediate future.

Visual multiple color emission of solid-state carbon dots

2019 ◽  
Vol 7 (25) ◽  
pp. 7806-7811 ◽  
Author(s):  
Jing Yang ◽  
Yong Liu ◽  
Jing Wang ◽  
Song Wang ◽  
Xinzhe Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
White Light ◽  
Carbon Dots ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Emission Properties ◽  
Prospective Application ◽  
Synthesis Approach ◽  
Color Emission

Solid-state luminescent carbon dots (CDs) with visual multiple color emission properties have been prepared by a facile in situ synthesis approach within the confined interlayers of the host 2D matrix LAPONITE® (SNC/Lap). The prospective application of SNC/Lap in white light emitting diode (LED) are demonstrated herein.

White-light-emitting KCl:Eu2+/KCN crystal for solid-state lighting devices

2014 ◽  
Vol 2 (47) ◽  
pp. 10149-10156 ◽  
Author(s):  
Luis Humberto da Cunha Andrade ◽  
Sandro Marcio Lima ◽  
Rogério Ventura da Silva ◽  
Mauro Luciano Baesso ◽  
Yannick Guyot ◽  
...  
Keyword(s):  
Solid State ◽  
White Light ◽  
Light Emitting Diode ◽  
Solid State Lighting ◽  
Light Emitting

The optical and colorimetric properties of a KCl:Eu2+/KCN crystal are analyzed in this paper to verify its potential for the development of white-light-emitting diode (WLED) devices.

New Y2LuCaAl2SiO12:Ln (Ln = Ce3+, Eu3+, and Tb3+) phosphors for white LED applications

2018 ◽  
Vol 5 (6) ◽  
pp. 1336-1345 ◽  
Author(s):  
D. A. Hakeem ◽  
J. W. Pi ◽  
S. W. Kim ◽  
K. Park
Keyword(s):  
Solid State ◽  
White Light ◽  
Light Emitting Diode ◽  
Solid State Lighting ◽  
White Led ◽  
Garnet Structure ◽  
Light Emitting

New garnet structure Y2−xLuCaGaAl2SiO12:xLn (Ln = Ce3+, Eu3+, and Tb3+) phosphors were explored for white light-emitting diode and solid-state lighting applications.

Li2SrSiO4:Eu2+ phosphor prepared by the Pechini method and its application in white light emitting diode

2008 ◽  
Vol 23 (12) ◽  
pp. 3288-3294 ◽  
Author(s):  
Hong He ◽  
Renli Fu ◽  
Hai Wang ◽  
Xiufeng Song ◽  
Zhengwei Pan ◽  
...  
Keyword(s):  
Solid State ◽  
White Light ◽  
Solid State Reaction ◽  
Light Emitting Diode ◽  
Pechini Method ◽  
Sol Gel ◽  
Color Temperature ◽  
Light Emitting ◽  
White Leds ◽  
Luminescence Efficiency

Eu2+-doped Li2SrSiO4 phosphors were prepared by two different synthesis processes, the Pechini sol-gel route and solid-state reaction (SSR) method. Their morphology, crystal structure, and luminescence properties have been characterized. Li2SrSiO4:Eu2+ phosphors show broad and intensive excitation in the range of 390–480 nm and emit yellow-orange light extending from 500 to 700 nm. The luminescence efficiency of Li2SrSiO4: Eu2+ phosphors synthesized through the Pechini route is much better than that of phosphors prepared by solid-state reaction method. The application of phosphors from the Pechini route in white light emitting diodes (LEDs) has been investigated. The Commission Internationale de L’Eclairage (CIE) chromaticity coordinates and the correlated color temperature of these white LEDs have been calculated; they are comparable to corresponding values of commercial Y3Al5O12:Ce3+ converted white LEDs.

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