scholarly journals Facile synthesis of intense green light emitting LiGdF4:Yb,Er-based upconversion bipyramidal nanocrystals and their polymer composites

Nanoscale ◽  
2014 ◽  
Vol 6 (13) ◽  
pp. 7461-7468 ◽  
Author(s):  
Hyejin Na ◽  
Jong Seok Jeong ◽  
Hye Jung Chang ◽  
Hyun You Kim ◽  
Kyoungja Woo ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Green Light ◽  
Facile Synthesis ◽  
Green Luminescence ◽  
Light Emitting ◽  
Bright Green ◽  
Transparent Composites

Intense upconversion green light emitting LiGdF4:Yb,Er-based tetragonal bipyramidal nanophosphors are synthesized via Y3+ doping. The highly transparent composites emit bright green luminescence.

Exploiting Two‐Step Processed Mixed 2D/3D Perovskites for Bright Green Light Emitting Diodes

2019 ◽  
Vol 7 (15) ◽  
pp. 1900465 ◽  
Author(s):  
Jielin Yan ◽  
Guillaume Croes ◽  
Azhar Fakharuddin ◽  
Wenya Song ◽  
Paul Heremans ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Green Light ◽  
Light Emitting ◽  
Bright Green

Application of three-coordinate copper(i) complexes with halide ligands in organic light-emitting diodes that exhibit delayed fluorescence

2015 ◽  
Vol 44 (18) ◽  
pp. 8369-8378 ◽  
Author(s):  
Masahisa Osawa ◽  
Mikio Hoshino ◽  
Masashi Hashimoto ◽  
Isao Kawata ◽  
Satoshi Igawa ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Layered Structures ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Green Luminescence ◽  
Light Emitting ◽  
Organic Light ◽  
Bright Green ◽  
Halide Ligands

Conventional bottom-emitting devices with three-layered structures containing sublimable three-coordinate copper(i) complexes produce bright green luminescence with maximum external quantum efficiencies (EQE) of 18.6–22.5%.

scholarly journals Green Phosphors Based on 9,10-bis((4-((3,7-dimethyloctyl)oxy) phenyl) ethynyl) Anthracene for LED

Micromachines ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 703
Author(s):  
Xuefeng Ren ◽  
Hai Song ◽  
Jing Xiao ◽  
Hui-Juan Yu ◽  
Chi-Fang Peng ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diode ◽  
Visible Region ◽  
Green Light ◽  
Green Emission ◽  
Coupling Reactions ◽  
Light Emitting ◽  
Good Thermal Stability ◽  
Light Excitation ◽  
Bright Green

An anthracene aromatic unit was introduced into the phenylethynyl structure by a rigid acetylene linkage at the C-9 and C-10 positions via Sonogashira coupling reactions, resulting in a planar and straight-backbone molecule (9,10-bis((4-((3,7-dimethyloctyl)oxy) phenyl) ethynyl) anthracene) (BPEA). Thermogravimetric analysis demonstrated the good thermal stability of the BPEA. Photoluminescence analysis showed that a suitable expanded π-conjugation in the BPEA made its excitation band extend into the visible region, and an intense green emission was observed under blue-light excitation. A bright green light-emitting diode with an efficiency of 18.22 lm/w was fabricated by coating the organic phosphor onto a 460 nm-emitting InGaN chip. All the results indicate that BPEA is a useful green-emitting material which is efficiently excited by blue light, and therefore, that it could be applied in many fields without UV radiation.

Efficient organic manganese (II) bromide green-light-emitting diodes enabled by manipulating hole and electron transport layer

2021 ◽  
Author(s):  
Hyunsik Im ◽  
Atanu Jana ◽  
Vijaya Gopalan Sree ◽  
QIANKAI BA ◽  
Seong Chan Cho ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Green Light ◽  
Transport Layer ◽  
Lead Free ◽  
Electron Transport Layer ◽  
Flat Panel Displays ◽  
Flat Panel ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Light Emitting Devices

Lead-free, non-toxic transition metal-based phosphorescent organic–inorganic hybrid (OIH) compounds are promising for next-generation flat-panel displays and solid-state light-emitting devices. In the present study, we fabricate highly efficient phosphorescent green-light-emitting diodes...

n-type GaN surface etched green light-emitting diode to reduce non-radiative recombination centers

2021 ◽  
Vol 118 (2) ◽  
pp. 021102
Author(s):  
Dong-Pyo Han ◽  
Ryoto Fujiki ◽  
Ryo Takahashi ◽  
Yusuke Ueshima ◽  
Shintaro Ueda ◽  
...  
Keyword(s):  
Radiative Recombination ◽  
Light Emitting Diode ◽  
Green Light ◽  
Light Emitting ◽  
Recombination Centers

Enhanced Performance of Pixelated Quantum Dot Light‐Emitting Diodes by Inkjet Printing of Quantum Dot–Polymer Composites

2021 ◽  
pp. 2002129
Author(s):  
Heebum Roh ◽  
Donghyun Ko ◽  
Dong Yeol Shin ◽  
Jun Hyuk Chang ◽  
Donghyo Hahm ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Polymer Composites ◽  
Inkjet Printing ◽  
Light Emitting Diodes ◽  
Light Emitting

New Results on Electroluminescence from Porous Silicon

1992 ◽  
Vol 283 ◽  
Author(s):  
Peter Steiner ◽  
Frank Kozlowski ◽  
Hermann Sandmaier ◽  
Walter Lang
Keyword(s):  
Porous Silicon ◽  
Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Uv Light ◽  
Green Light ◽  
Light Emitting ◽  
Porous Region ◽  
First Results

ABSTRACTFirst results on light emitting diodes in porous silicon were reported in 1991. They showed a quantum efficiency of 10-7 to 10-5 and an orange spectrum. Over the last year some progress was achieved:- By applying UV-light during the etching blue and green light emitting diodes in porous silicon are fabricated.- When a p/n junction is realized within the porous region, a quantum efficiency of 10-4 is obtained.

Oxadiazole Containing Conjugated−Nonconjugated Blue and Blue-Green Light Emitting Copolymers

2001 ◽  
Vol 34 (12) ◽  
pp. 4124-4129 ◽  
Author(s):  
Min Zheng ◽  
Liming Ding ◽  
E. Elif Gürel ◽  
Paul M. Lahti ◽  
Frank E. Karasz
Keyword(s):  
Green Light ◽  
Light Emitting

Green Aluminate Phosphors Used for Information Display

2010 ◽  
Vol 428-429 ◽  
pp. 421-425 ◽  
Author(s):  
Ye Tang Guo ◽  
Yuan Ming Huang
Keyword(s):  
Electron Microscopy ◽  
Composite Films ◽  
Green Light ◽  
Combustion Method ◽  
Information Display ◽  
Light Emitting ◽  
Conventional Combustion ◽  
Information Displays ◽  
Inorganic Composite ◽  
Scanning Electron

Well known long-persistent phosphorous strontium aluminates were synthesized by conventional combustion method in a furnace at about 600oC. By incorporating the obtained phosphorous strontium aluminates into organic host polystyrene, we prepared the organic-inorganic composite material (i.e., phosphor-polystyrene) which could be cast into flexible and green-light- emitting films. The morphology of the obtained phosphorous strontium aluminates and the phosphorescence of the organic-inorganic composite films were characterized with the scanning electron microscopy and the fluorescence spectroscopy, respectively. Our results show that the organic-inorganic composite films can be used as green-light- emitting roll-able screens in the industry of information displays.

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