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The paper establishes the integrated monitoring system model for auxiliary workshops in thermal power plant, then proposes the design methods and principles of DCS, and designs the real system in accordance with the methods and principles.
InGaN/GaN light emitting diodes (LEDs) with different thickness of the last quantum barrier (LQB) near the p-layers is studied. Simulation results show that GaN-based LEDs with thinner LQB exhibit much higher output power and smaller efficiency droop than conventional LEDs due to the better electrons confinement in the quantum wells, which leads to efficient recombination of electrons and holes in...
Effect of last barrier (LB) with different thicknesses and p-doping concentrations on efficiency improvement of blue InGaN/GaN multiple quantum well (MQW) light-emitting diodes (LEDs) is simulated by APSYS software. The simulation results show that thin LB has positive effect at low p-doping concentration while negative at high concentration and that p-doping is more effective for LEDs with thick...
LASTIP software was applied to simulate a classical GaN-based blue laser diodes (LD) emitting at about 410 nm. Considering effects of polarization charge (PC) in this LD, theoretical simulation showed accordant results with that in experiments. On the other hand, without regard to PC, threshold voltage and current are lowered, while laser characteristic temperature is enhanced, which indicates that...
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