Linear and nonlinear optical absorption coefficients in InGaN/GaN quantum wells: Interplay between intense laser field and higher-order anharmonic potentials

En-nadir, Redouane; Kabatas, Mohamed A. Basyooni-M.; Tihtih, Mohammed; El Ghazi, Haddou

doi:10.1016/j.heliyon.2023.e22867

Cited by 2 publications

(1 citation statement)

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, a ternary compound, exhibits outstanding traits—encompassing the solar spectrum (0.78 eV to 3.42 eV), high absorption, radiation resistance, thermal stability, and exceptional chemical robustness [ 19 , 20 ]. Moreover, the optical properties of InGaN/GaN systems under different internal and external conditions have been intensively investigated [ 21 , 22 , 23 , 24 , 25 , 26 ]. Optoelectronic devices employing these materials can experience degradation due to the strong integrated electric field (BEF), leading to a decline in overall performance.…”

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confidence: 99%

Efficiency of InN/InGaN/GaN Intermediate-Band Solar Cell under the Effects of Hydrostatic Pressure, In-Compositions, Built-in-Electric Field, Confinement, and Thickness

Abboudi,

EL Ghazi,

En-nadir

et al. 2024

Nanomaterials

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This paper presents a thorough numerical investigation focused on optimizing the efficiency of quantum-well intermediate-band solar cells (QW-IBSCs) based on III-nitride materials. The optimization strategy encompasses manipulating confinement potential energy, controlling hydrostatic pressure, adjusting compositions, and varying thickness. The built-in electric fields in (In, Ga)N alloys and heavy-hole levels are considered to enhance the results’ accuracy. The finite element method (FEM) and Python 3.8 are employed to numerically solve the Schrödinger equation within the effective mass theory framework. This study reveals that meticulous design can achieve a theoretical photovoltaic efficiency of quantum-well intermediate-band solar cells (QW-IBSCs) that surpasses the Shockley–Queisser limit. Moreover, reducing the thickness of the layers enhances the light-absorbing capacity and, therefore, contributes to efficiency improvement. Additionally, the shape of the confinement potential significantly influences the device’s performance. This work is critical for society, as it represents a significant advancement in sustainable energy solutions, holding the promise of enhancing both the efficiency and accessibility of solar power generation. Consequently, this research stands at the forefront of innovation, offering a tangible and impactful contribution toward a greener and more sustainable energy future.

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