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http://dx.doi.org/10.46670/JSST.2022.31.1.31

Improvement of the LED Performance Using Mg Delta-doing in p Type Cladding Layer for Sensor Application  

Kim, Yukyung (Department of Chemical Engineering, Dankook University)
Lee, Seungseop (Department of Chemical Engineering, Dankook University)
Jeon, Juho (Department of Chemical Engineering, Dankook University)
Kim, Mankyung (Department of Chemical Engineering, Dankook University)
Jang, Soohwan (Department of Chemical Engineering, Dankook University)
Publication Information
Journal of Sensor Science and Technology / v.31, no.1, 2022 , pp. 31-35 More about this Journal
Abstract
The efficacy improvement of the light emitting diode (LED) was studied for the realization of small-size, low power consumption, and highly sensitive bio-sensor instrument. The performance of the LED with Mg delta-doping at the interface of AlGaN/GaN super-lattice in p type cladding layer was simulated. The device with Mg delta-doping showed improved current, radiative recombination rate, electroluminescence, and light output power compared to the conventional LED structure. Under the bias condition of 5 V, the improved device exhibited 20.8% increase in the light output power. This is attributed to the increment of hole concentration from stable ionization of Mg in p type cladding layer. This result is expected to be used for the miniaturization, power saving, and sensitivity improvement of the bio-sensor system.
Keywords
Light emitting diode; GaN; superlattice; doping; light source;
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