Uniform and high-power characteristics of 780-nm AlGaAs TQW laser diodes fabricated by large-scale MOCVD

1994 ◽  
Vol 30 (1) ◽  
pp. 24-30 ◽  
Author(s):  
A. Shima ◽  
M. Miyashita ◽  
T. Miura ◽  
T. Kadowaki ◽  
N. Hayafuji ◽  
...  
Keyword(s):  
High Power ◽  
Large Scale ◽  
Laser Diodes ◽  
Power Characteristics

Uniform and High-Power Characteristics of AlGaInP-Based Laser Diodes With 4-Inch-Wafer Process Technology

2007 ◽  
Vol 13 (5) ◽  
pp. 1170-1175 ◽  
Author(s):  
Hiroyuki Sumitomo ◽  
Satoshi Kajiyama ◽  
Hiroyuki Oguri ◽  
Takeshi Sakashita ◽  
Toru Yamamoto ◽  
...  
Keyword(s):  
High Power ◽  
Laser Diodes ◽  
Process Technology ◽  
Power Characteristics

Limitations to brightness in high power laser diodes

2015 ◽  
Author(s):  
P. Crump ◽  
M. Winterfeldt ◽  
J. Decker ◽  
M. Ekterai ◽  
J. Fricke ◽  
...  
Keyword(s):  
High Power ◽  
Laser Diodes ◽  
High Power Laser ◽  
Power Laser

Thermal condition of high-power laser diodes

2015 ◽  
Vol 42 (3) ◽  
pp. 88-92 ◽  
Author(s):  
V. V. Bezotosnyi ◽  
O. N. Krokhin ◽  
V. A. Oleshchenko ◽  
V. F. Pevtsov ◽  
Yu. M. Popov ◽  
...  
Keyword(s):  
High Power ◽  
Thermal Condition ◽  
Laser Diodes ◽  
High Power Laser ◽  
Power Laser

scholarly journals Nitrogen-enriched graphene framework from a large-scale magnesiothermic conversion of CO2 with synergistic kinetics for high-power lithium-ion capacitors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Chen Li ◽  
Xiong Zhang ◽  
Kai Wang ◽  
Xianzhong Sun ◽  
Yanan Xu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Power ◽  
Power Output ◽  
Large Scale ◽  
Electrode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Chemical Doping ◽  
Lithium Ion Capacitor

AbstractLithium-ion capacitors are envisaged as promising energy-storage devices to simultaneously achieve a large energy density and high-power output at quick charge and discharge rates. However, the mismatched kinetics between capacitive cathodes and faradaic anodes still hinder their practical application for high-power purposes. To tackle this problem, the electron and ion transport of both electrodes should be substantially improved by targeted structural design and controllable chemical doping. Herein, nitrogen-enriched graphene frameworks are prepared via a large-scale and ultrafast magnesiothermic combustion synthesis using CO2 and melamine as precursors, which exhibit a crosslinked porous structure, abundant functional groups and high electrical conductivity (10524 S m−1). The material essentially delivers upgraded kinetics due to enhanced ion diffusion and electron transport. Excellent capacities of 1361 mA h g−1 and 827 mA h g−1 can be achieved at current densities of 0.1 A g−1 and 3 A g−1, respectively, demonstrating its outstanding lithium storage performance at both low and high rates. Moreover, the lithium-ion capacitor based on these nitrogen-enriched graphene frameworks displays a high energy density of 151 Wh kg−1, and still retains 86 Wh kg−1 even at an ultrahigh power output of 49 kW kg−1. This study reveals an effective pathway to achieve synergistic kinetics in carbon electrode materials for achieving high-power lithium-ion capacitors.

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