Nitride Crystals AlN Ltd.

Saint Petersburg, Russia

Nitride Crystals AlN Ltd.

Saint Petersburg, Russia
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Kurin S.Y.,Nitride Crystals AlN Ltd. | Usikov A.S.,Nitride Crystals Inc. | Papchenko B.P.,Saint Petersburg State University of Information Technologies, Mechanics and Optics | Helava H.,Nitride Crystals Inc. | And 4 more authors.
Journal of Physics: Conference Series | Year: 2016

GaN/AlGaN p-n heterostructures emitting in UV spectral range obtained by HVPE approach were investigated. It was shown that the peak wavelength of UV LEDs was in the range of 360-380 nm with FWHM of 10-13 nm. At operating current of 20 mA, the active region temperature Tj was 43°C, the output optical power and efficiency - 1.14 mW and 1.46%, respectively. The model based on corpuscular Monte Carlo method for calculation of the light extraction index was presented. The simulation results allow us to propose the ways to increase the efficiency of UV LEDs: surface interfaces texturing, optimization of the design of heterostructures, and the use of lenses. © Published under licence by IOP Publishing Ltd.

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