High-efficiency cathodic electrochemiluminescence of the tris(2,2′-bipyridine)ruthenium(ii)/N-hydroxy compound system and its use for sensitive “turn-on” detection of mercury(ii) and methyl blue

2020 ◽  
Vol 56 (12) ◽  
pp. 1827-1830
Author(s):  
Muhammad Saqib ◽  
Shahida Bashir ◽  
Shimeles Addisu Kitte ◽  
Haijuan Li ◽  
Yongdong Jin
Keyword(s):  
High Efficiency ◽  
Methyl Blue ◽  
Neutral Medium ◽  
Compound System ◽  
Hydroxy Compound ◽  
Turn On

N-Hydroxysuccinimide (NHS) and N-hydroxysulfosuccinimide (NHSS) were exploited as efficient coreactants for cathodic Ru(bpy)32+ electrochemiluminescence (ECL) in neutral medium.

New hole transport styrene polymers bearing highly π-extended conjugated side-chain moieties for high-performance solution-processable thermally activated delayed fluorescence OLEDs

2021 ◽  
Vol 12 (11) ◽  
pp. 1692-1699
Author(s):  
Ji Hye Lee ◽  
Jinhyo Hwang ◽  
Chai Won Kim ◽  
Amit Kumar Harit ◽  
Han Young Woo ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Delayed Fluorescence ◽  
Hole Transport ◽  
Side Chain ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Turn On ◽  
Solution Processable

New polystyrene-based polymers with high π-extended hole transport pendants were synthesized to obtain a low turn-on voltage and high efficiency in solution-processed green TADF-OLEDs.

A Novel High Power Factor Soft-Switching Converter

2012 ◽  
Vol 433-440 ◽  
pp. 5549-5555
Author(s):  
Yun Tao Yue ◽  
Yan Lin
Keyword(s):  
Power Factor ◽  
High Power ◽  
Power Supply ◽  
High Efficiency ◽  
Soft Switching ◽  
Switching Converter ◽  
Turn On ◽  
High Power Factor ◽  
Power Factor Corrector ◽  
Zero Voltage

A novel scheme of low power communication power supply with high power factor and soft-switching is presented, a power factor corrector and dc/dc converter of passive lossless soft-switching is based on a ML4803 IC control. DC/DC converter introduces a novel two-transistor forward soft-switching technique, which realizes zero-voltage turn-on and turn-off, with no additional switches. a communication power supply module is developed in this paper. It has the characteristics of rapid dynamic response, high power factor, high efficiency and small bulk ect.

High Voltage Insulated Gate Trigger Thyristor With High-Efficiency Injection for Fast Turn-on and High Current Pulse

2019 ◽  
Vol 40 (12) ◽  
pp. 1965-1968 ◽  
Author(s):  
Chao Liu ◽  
Wanjun Chen ◽  
Ruize Sun ◽  
Yijun Shi ◽  
Qi Zhou ◽  
...  
Keyword(s):  
Current Pulse ◽  
High Voltage ◽  
High Efficiency ◽  
High Current ◽  
Turn On

Low-driving-voltage sky-blue phosphorescent organic light-emitting diodes with bicarbazole-bipyridine bipolar host materials

2021 ◽  
Author(s):  
Deli Li ◽  
Di Liu ◽  
Jiuyan Li ◽  
Ruizhi Dong ◽  
Botao Liu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Driving Voltage ◽  
Light Emitting ◽  
Turn On ◽  
Organic Light ◽  
Host Materials ◽  
Blue Phosphorescent

Two bipolar host containing bipyridine and bicarbazole exhibited rapid and balanced charge transportation, which resulting the extremely low turn-on voltages of 2.3 and 2.4 V, respectively, and the high efficiency of 23.7% and 52.6 lm W−1.

Coordinatively Self-Assembled Luminescent Gold Nanoparticles: Fluorescence Turn-On System for High-Efficiency Passive Tumor Imaging

2017 ◽  
Vol 9 (6) ◽  
pp. 5118-5127 ◽  
Author(s):  
Xuandi Lai ◽  
Lishan Tan ◽  
Xiulong Deng ◽  
Jinbin Liu ◽  
Aiqing Li ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
High Efficiency ◽  
Tumor Imaging ◽  
Turn On ◽  
Self Assembled ◽  
Fluorescence Turn On

scholarly journals Non-Dissipative Snubber Circuit Based SEPIC Converter for High Static Gain Applications

2020 ◽  
Vol 8 (6) ◽  
pp. 754-757
Keyword(s):  
High Efficiency ◽  
Semiconductor Device ◽  
Semiconductor Devices ◽  
Sudden Change ◽  
The Other ◽  
Efficient Operation ◽  
Power Semiconductor ◽  
Turn On ◽  
Power Semiconductor Devices ◽  
Snubber Circuit

In this paper different non-dissipative snubber circuits in which RCD snubber circuit, CD snubber circuit, LCD snubber circuit and proposed LCD snubber circuit are implemented in SEPIC converter to obtain high static gain. The snubber circuit is used for the protection of the power semiconductor devices. The requirement of high static gain is necessary in different applications of dc-dc converters, so that efficient operation of the system can be obtained. The basic idea of the snubber circuit used in this paper is to reduce the turn-on and turn-off losses at the time of switching processes. For this purpose, inductor and capacitor combination is required so that during turn-on process, sudden change in current through semiconductor device which is used as a switch, can be reduced. Similarly, during turn-off process, sudden change in voltage across switch can be minimized. Here, different snubber circuit based SEPIC converters are analyzed with the help of MATLAB simulink and results of output voltages and currents are obtained. The results are summarized which clearly shows that the proposed SEPIC converter has high static gain in comparison of the others topologies. Hence non-dissipative snubber circuit based SEPIC converter provides high efficiency than the other modifications in SEPIC converter.

Chip Technology Based on High Efficiency DC Power Supply

2014 ◽  
Vol 1030-1032 ◽  
pp. 1384-1387
Author(s):  
Hao Wang ◽  
Dian Ren Chen
Keyword(s):  
Power Supply ◽  
High Efficiency ◽  
Switching Power Supply ◽  
Switching Power ◽  
Turn On ◽  
Dc Power ◽  
Switching Transistor ◽  
Chip Technology ◽  
Off Time ◽  
Pipe Work

The switching power supply is the use of modern power electronics, by controlling the switching transistor turn-on and turn-off time ratio, maintaining a stable output voltage of the power supply. Switching power supply technology at the core, it is mainly divided into AC / DC and DC / DC two categories. Switching power supply eliminates bulky frequency transformers, replacing tens of kHz, MHz or even hundreds of kHz frequency transformer. Since the adjustment pipe work in the off state, and thus low power consumption and high efficiency.

Fabrication of a photo-catalytic cell using polymer-based composite films and investigation of its performance in the degradation of methyl blue

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 25830-25839 ◽  
Author(s):  
Yiru Jia ◽  
Yun Yu ◽  
Xinjian Cheng ◽  
Xiao Zhao ◽  
Shengwei Ma ◽  
...  
Keyword(s):  
Polymer Composite ◽  
High Efficiency ◽  
Composite Films ◽  
Methyl Blue ◽  
Photo Degradation ◽  
Particle Layer

A photo-catalytic cell was fabricated using CdS/polymer composite films with a CdS particle layer on the surface. The cell exhibited high efficiency in the photo-degradation of methyl blue.

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