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Doping effect on bandgap energy and luminescence spectrum for AlN-based semiconductor

Faris Azim Ahmad Fajri, Faris Azim and Hairol Aman, Mohammad Amirul and Ahmad Noorden, Ahmad Fakhrurrazi and Abdul Hamid, Ahmad Noor and Abdul Aziz, Azni (2022) Doping effect on bandgap energy and luminescence spectrum for AlN-based semiconductor. In: 7th International Conference on the Applications of Science and Mathematics, SCIEMATHIC 2021, 27- 28 October 2021, Virtual.

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This ongoing work reports the heavy doping effect on the Aluminum Nitride (AlN) semiconductor (SC) material, illustrated via its energy-band structure (EBS). The research correlates the bandgap energy (BE) and depletion region (DR), which are then applied to the estimation of light-emitting diode (LED) luminescence spectrum (LS). The measurements are compared with different dopant concentrations (1 × 1018 cm−3 –1 × 1021 cm−3). Having the Gallium Arsenide (GaAs) properties as the controlled variable, the EBS is validated with literature findings. The measured band gap energy of AlN shifts from 6.2435 to 6.2326 eV. It decreased as the dopant concentration increased. However, the active spatial regions, reduced from (1.0250 × 10−1 to 4.5000 × 10−3 µm) × 1 µm2. The findings are compared with the output LS of LED using the same SC material. The changes in BE and DR are consistent with the LS peak intensity wavelength and relative intensity to all the chosen doping concentrations. Though acquiring this consistency, an extensive discussion with collaboration in material science studies will further strengthen the understanding regarding these behaviours.

Item Type: Conference or Workshop Item (Other)
Subjects: Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science
Kulliyyah of Science > Department of Physics
Depositing User: Dr Ahmad Fakhrurrazi Ahmad Noorden
Date Deposited: 20 Sep 2022 09:19
Last Modified: 20 Sep 2022 09:19
URI: http://irep.iium.edu.my/id/eprint/99956

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