Investigation of a Separated Short-Wavelength Peak in InGaN Red Light-Emitting Diodes
نویسندگان
چکیده
We fabricated indium gallium nitride (InGaN) red light-emitting diodes (LEDs) with a peak emission wavelength of 649 nm and investigated their electroluminescence (EL) properties. An additional separated in the EL spectrum LEDs at 20 mA was observed 465 nm. This also exhibits blue-shift increasing currents as does main peak. Using high-resolution microscopy, we many point-like spots images below 1 mA. However, these cannot be identified above 5 because from quantum wells (QWs) is much stronger than that emitted by spots. Finally, demonstrate are related to defects generated QWs. The measured In content lower vicinity defects, which regarded reason for short-wavelength InGaN LEDs.
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ژورنال
عنوان ژورنال: Crystals
سال: 2021
ISSN: ['2073-4352']
DOI: https://doi.org/10.3390/cryst11091123