Back to Search
Start Over
AlGaN‐based ultraviolet light‐emitting diodes: challenges and opportunities
- Source :
- Luminescence. 36:294-305
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- Due to low power consumption, tunable wavelength and long lifetime ultraviolet light-emitting diodes (UV LEDs) have found many applications in different fields such as health care, water disinfection, agriculture. In this review, we report different problems that lead to low external quantum efficiency of UV LEDs. We also report various challenges in the growth process of the UV LEDs such as increase in the dislocation density, which affects the optoelectronic performance of the devices. We also report the analysis of the two modes of light polarization, i.e. transverse electric and transverse magnetic in UV LEDs. Moreover, we also summarize various state-of-the-art reported external quantum efficiencies, light output power and peak emission wavelengths in the three UV wavelength regimes, i.e. UV-A, UV-B and UV-C LEDs.
- Subjects :
- Materials science
Ultraviolet Rays
Ultraviolet light emitting diodes
Biophysics
Gallium
02 engineering and technology
medicine.disease_cause
01 natural sciences
Water Purification
law.invention
law
medicine
Aluminum Compounds
Quantum
Diode
business.industry
010401 analytical chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
Disinfection
Wavelength
Chemistry (miscellaneous)
Power consumption
Optoelectronics
Quantum efficiency
0210 nano-technology
business
Ultraviolet
Light-emitting diode
Subjects
Details
- ISSN :
- 15227243 and 15227235
- Volume :
- 36
- Database :
- OpenAIRE
- Journal :
- Luminescence
- Accession number :
- edsair.doi.dedup.....b1a652718fe4aeaac8abf2865b4a992f