Efficiency enhancement of ingan/gan leds with mg-si co-doped gan quantum barrier

Sirkeli Vadim; Yilmazoglu Oktay; Kuppers Franko; Hartnagel Hans Ludwig

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893

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2021-11-04 12:28

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530.145 (39)

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SIRKELI, Vadim, YILMAZOGLU, Oktay, KUPPERS, Franko, HARTNAGEL, Hans Ludwig. Efficiency enhancement of ingan/gan leds with mg-si co-doped gan quantum barrier. In: Проблемы и вызовы экономики региона в условиях глобализации, Ed. 3, 7 decembrie 2017, Comrat. Comrat, Republica Moldova: Tipografia "A & V Poligraf", 2017, Ediția 3, pp. 222-228. ISBN 978-9975-3021-7-3.

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Проблемы и вызовы экономики региона в условиях глобализации
Ediția 3, 2017

Conferința "Проблемы и вызовы экономики региона в условиях глобализации"
3, Comrat, Moldova, 7 decembrie 2017

Efficiency enhancement of ingan/gan leds with mg-si co-doped gan quantum barrier

CZU: 530.145

Pag. 222-228

Sirkeli Vadim¹, Yilmazoglu Oktay², Kuppers Franko², Hartnagel Hans Ludwig²

¹ Universitatea de Stat din Comrat,
² Universitatea Tehnică, Darmstadt

Disponibil în IBN: 30 ianuarie 2019

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Blue InGaN/GaN light-emitting diodes with undoped and Mg-Si co-doped GaN barrier are investigated numerically. The simulation results demonstrate that the Mg-Si co-doping of the GaN barrier effectively reduces the polarization-induced electric field between the InGaN well and the GaN barrier in the multiple quantum well, and also suppresses the quantum confined Stark effect, and enhances the hole injection and electron confinement in the active region. For this LED device structure, we found that the turn-on voltage is 2.8 V, peak of light emission is at 415.3 nm and internal quantum efficiency (IQE) is 85.9% at 100 A/cm2. It is established that the LED device with Mg-Si co-doped GaN barrier has significantly improved efficiency and optical output power performance, and have lower efficiency droop up to 400 A/cm2 compared with LEDs with undoped GaN barrier.

Cuvinte-cheie
light-emitting diode, Gallium nitride, indium nitride, silicon doping, magnesium doping, pin-doping, internal quantum efficiency

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