Fabrication of Photothermal Film for Deicing Process Based on Gold Nano-Aggregate Encapsulated Yolk-Shell Structure

2021 ◽  
Vol 13 (8) ◽  
pp. 1424-1429
Author(s):  
Geun Young Kim ◽  
Gwang-Bum Im ◽  
Hyun-Seok Choe ◽  
Jeong-Min Park ◽  
Jae-Hyuk Kim ◽  
...  
Keyword(s):  
Shell Structure ◽  
Temperature Increase ◽  
Light Emitting Diode ◽  
Environmentally Friendly ◽  
Light Emitting ◽  
Highly Efficient ◽  
Polyurethane Acrylate ◽  
Ice Accumulation ◽  
Continuous Demand ◽  
Excellent Stability

Ice accumulation on vessels, airplanes, or on the off-shore plants surfaces causes major accidents and difficulties in operation. Therefore, highly efficient and environmentally friendly materials for use as deicing surfaces are in continuous demand. Accordingly, photothermal materials have gained enormous attention owing to their outstanding performance in the removal of ice. Herein, a gold nano-aggregate yolk-shell structure (GNA-YS) was introduced as a deicing material. GNA-YS was homogeneously dispersed in photocurable polyurethane acrylate and used to fabricate a highly efficient and sunlight-responsive GNA-YS film. Upon irradiation with an 810 nm light-emitting diode (LED) (135 mW cm−2), the temperature of the GNA-YS film increased by approximately 70 °C within 2 min, which rapidly (within 6 min) melted the accumulated ice. Moreover, the GNA-YS film exhibited a temperature increase of 15 °C in a refrigerator under LED illumination for 1 min. Additionally excellent stability was confirmed through repeated experiments. The newly developed deicing GNA-YS film has prospective applicability in vessels or airplanes.

scholarly journals Use of Hybrid PEDOT:PSS/Metal Sulfide Quantum Dots for a Hole Injection Layer in Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes

2021 ◽  
Vol 9 ◽  
Author(s):  
Wenqing Zhu ◽  
Kuangyu Ding ◽  
Chen Yi ◽  
Ruilin Chen ◽  
Bin Wei ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Metal Sulfide ◽  
Molybdenum Sulfide ◽  
Hole Injection ◽  
Light Emitting ◽  
Hole Injection Layer ◽  
Highly Efficient ◽  
Organic Light

In this study, we have synthesized the molybdenum sulfide quantum dots (MoS2 QDs) and zinc sulfide quantum dots (ZnS QDs) and demonstrated a highly efficient green phosphorescent organic light-emitting diode (OLED) with hybrid poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) (PEDOT:PSS)/QDs hole injection layer (HIL). The electroluminescent properties of PEDOT:PSS and hybrid HIL based devices were explored. An optimized OLED based on the PEDOT:PSS/MoS2 QDs HIL exhibited maximum current efficiency (CE) of 72.7 cd A−1, which shows a 28.2% enhancement as compared to counterpart with single PEDOT:PSS HIL. The higher device performance of OLED with hybrid HIL can be attributed to the enhanced hole injection capacity and balanced charge carrier transportation in the OLED devices. The above analysis illustrates an alternative way to fabricate the high efficiency OLEDs with sulfide quantum dots as a HIL.

scholarly journals Highly Efficient Room Temperature Spin Injection in a Metal-Insulator-Semiconductor Light-Emitting Diode

2003 ◽  
Vol 42 (Part 2, No. 5B) ◽  
pp. L502-L504 ◽  
Author(s):  
Pol Van Dorpe ◽  
Vasyl F. Motsnyi ◽  
Mayke Nijboer ◽  
Etienne Goovaerts ◽  
Viacheslav I. Safarov ◽  
...  
Keyword(s):  
Room Temperature ◽  
Light Emitting Diode ◽  
Spin Injection ◽  
Metal Insulator ◽  
Metal Insulator Semiconductor ◽  
Light Emitting ◽  
Highly Efficient

High efficiency above 20% in polymeric thermally activated delayed fluorescent organic light-emitting diodes by a host embedded backbone structure

2019 ◽  
Vol 10 (35) ◽  
pp. 4872-4878 ◽  
Author(s):  
Yun Hwan Park ◽  
Ho Jin Jang ◽  
Jun Yeob Lee
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Backbone Structure

A highly efficient polymeric thermally activated delayed fluorescent (TADF) organic light-emitting diode was developed by synthesizing a copolymer with 9-vinylcarbazole (VCz) and TADF repeating units.

An axially chiral thermally activated delayed fluorescent emitter with a dual emitting core for a highly efficient organic light-emitting diode

2020 ◽  
Vol 56 (65) ◽  
pp. 9380-9383 ◽  
Author(s):  
Yin-Feng Wang ◽  
Meng Li ◽  
Wen-Long Zhao ◽  
Yi-Fan Shen ◽  
Hai-Yan Lu ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Axially Chiral

An axially chiral TADF emitter with a dual-emitting-core showed a high PLQY and EQE (20.8%), while its enantiomers also exhibited CPL properties.

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