Effect of Erbium doping on GaN electronic and optical properties: First-principles study
| Autor: | Abdelkader Boukortt, H. Abbassa, M. Lantri, Y. Benaissa Cherif, Ali Zaoui, S. Meskine |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Materials science business.industry Statistical and Nonlinear Physics 02 engineering and technology Erbium doping 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Condensed Matter::Materials Science 0103 physical sciences Optoelectronics Condensed Matter::Strongly Correlated Electrons 0210 nano-technology business |
| Zdroj: | Modern Physics Letters B. 33:1950327 |
| ISSN: | 1793-6640 0217-9849 |
| DOI: | 10.1142/s0217984919503275 |
| Popis: | In this work, we studied the electronic and optical properties of [Formula: see text] with a concentration [Formula: see text]. Based on a first-principle calculation and using the FP-LAPW full-linearized augmented plane wave method, to see the doping phenomenon with Erbium (Er) [Formula: see text], we used the three approximations: local spin density approximation (LSDA), the LSDA[Formula: see text] with [Formula: see text] is the Hubbard potential and the Becke–Johnson modification (mBJ). Our results show that the values of the structural parameters increase with the substitution of Ga by the Erbium atom. The analysis of the electronic structures in this study shows that the Er-doped GaN has a semi-metallic ferromagnetic character with the LSDA and mBJ approximations and a semiconductor behavior when we apply the Hubbard potential [Formula: see text]. The real and imaginary part of the dielectric function, refractive index, and extinction coefficient are also calculated and presented in the photon energy range up to 14 eV. In the optical spectrum, the intensity of the absorption coefficient is observed in the imaginary part of both doped and undoped GaN in the ultraviolet regions. |
| Databáze: | OpenAIRE |
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