In this paper, an efficient full-wave analysis of a circular microstrip patch printed on suspended and composite substrates is performed using a dyadic Green’s function formulation. Galerkin’s technique is used in the resolution of the integral equation of the electric field. The TM set of modes issued, from the magnetic wall cavity model, are used to expand the unknown currents on the circular patch. The radiation patterns are expressed regarding the transforms of the currents. The convergence of the method is proven by calculating the resonant frequencies, half-power bandwidths, and quality factors for several configurations. The computed results are found to be in excellent agreement with those observed in the literature. The numerical results obtained show that the bandwidth increases with the increase in the thickness of the suspended or composite substrates, especially for low permittivity of the second layer. Also, it is demonstrated that the resonant frequencies of the circular microstrip patch on suspended and composite substrates can be adjusted to obtain the maximum operating frequency of the antenna. Finally, the effect of the presence of the second layer under the circular patch on the radiation patterns is also investigated.

In this paper, an efficient full-wave analysis of a circular microstrip patch printed on suspended and composite substrates is performed using a dyadic Green’s function formulation. Galerkin’s technique is used in the resolution of the integral equation of the electric field. The TM set of modes issued, from the magnetic wall cavity model, are used to expand the unknown currents on the circular patch. The radiation patterns are expressed regarding the transforms of the currents. The convergence of the method is proven by calculating the resonant frequencies, half-power bandwidths, and quality factors for several configurations. The computed results are found to be in excellent agreement with those observed in the literature. The numerical results obtained show that the bandwidth increases with the increase in the thickness of the suspended or composite substrates, especially for low permittivity of the second layer. Also, it is demonstrated that the resonant frequencies of the circular microstrip patch on suspended and composite substrates can be adjusted to obtain the maximum operating frequency of the antenna. Finally, the effect of the presence of the second layer under the circular patch on the radiation patterns is also investigated.

In this paper, an efficient full-wave analysis of a circular microstrip patch printed on suspended and composite substrates is performed using a dyadic Green’s function formulation. Galerkin’s technique is used in the resolution of the integral equation of the electric field. The TM set of modes issued, from the magnetic wall cavity model, are used to expand the unknown currents on the circular patch. The radiation patterns are expressed regarding the transforms of the currents. The convergence of the method is proven by calculating the resonant frequencies, half-power bandwidths, and quality factors for several configurations. The computed results are found to be in excellent agreement with those observed in the literature. The numerical results obtained show that the bandwidth increases with the increase in the thickness of the suspended or composite substrates, especially for low permittivity of the second layer. Also, it is demonstrated that the resonant frequencies of the circular microstrip patch on suspended and composite substrates can be adjusted to obtain the maximum operating frequency of the antenna. Finally, the effect of the presence of the second layer under the circular patch on the radiation patterns is also investigated.

In this paper, a new approach based on ZnO/Silicon interface engineering aspect is proposed to enhance the absorbance performance for n-ZnO/p-Si hetero-junction based solar cell. The merits of using grooves morphology in the ZnO/Silicon interface to improve the photovoltaic performance are investigated numerically using accurate solutions of Maxwell's equations. It is found that the proposed interface morphology arises the optical confinement effect which can efficiently improve the device optical performance. Besides, the proposed structure exhibits superior photovoltaic performance and offers improved absorbance behavior as compared to the conventional counterpart. Moreover, the introduced grooves in the n-ZnO/p-Si interface play a crucial role in increasing the light absorbance through modulating the electric field behavior inside the absorber region. These characteristics not only underline the enhanced optical behavior of the investigated structure but also bring the possibility of overcoming the tradeoff between the high efficiency and the low fabrication cost. This makes the proposed n-ZnO/p-Si hetero-junction solar cell with interface texturization a potential alternative for developing high-performance solar cell with low manufacturing cost.

In this paper, a new approach based on ZnO/Silicon interface engineering aspect is proposed to enhance the absorbance performance for n-ZnO/p-Si hetero-junction based solar cell. The merits of using grooves morphology in the ZnO/Silicon interface to improve the photovoltaic performance are investigated numerically using accurate solutions of Maxwell's equations. It is found that the proposed interface morphology arises the optical confinement effect which can efficiently improve the device optical performance. Besides, the proposed structure exhibits superior photovoltaic performance and offers improved absorbance behavior as compared to the conventional counterpart. Moreover, the introduced grooves in the n-ZnO/p-Si interface play a crucial role in increasing the light absorbance through modulating the electric field behavior inside the absorber region. These characteristics not only underline the enhanced optical behavior of the investigated structure but also bring the possibility of overcoming the tradeoff between the high efficiency and the low fabrication cost. This makes the proposed n-ZnO/p-Si hetero-junction solar cell with interface texturization a potential alternative for developing high-performance solar cell with low manufacturing cost.

In this paper, a new approach based on ZnO/Silicon interface engineering aspect is proposed to enhance the absorbance performance for n-ZnO/p-Si hetero-junction based solar cell. The merits of using grooves morphology in the ZnO/Silicon interface to improve the photovoltaic performance are investigated numerically using accurate solutions of Maxwell's equations. It is found that the proposed interface morphology arises the optical confinement effect which can efficiently improve the device optical performance. Besides, the proposed structure exhibits superior photovoltaic performance and offers improved absorbance behavior as compared to the conventional counterpart. Moreover, the introduced grooves in the n-ZnO/p-Si interface play a crucial role in increasing the light absorbance through modulating the electric field behavior inside the absorber region. These characteristics not only underline the enhanced optical behavior of the investigated structure but also bring the possibility of overcoming the tradeoff between the high efficiency and the low fabrication cost. This makes the proposed n-ZnO/p-Si hetero-junction solar cell with interface texturization a potential alternative for developing high-performance solar cell with low manufacturing cost.

In this paper, a new approach based on optimized intermediate metallic thin film engineering aspect is proposed to improve the absorption behavior for amorphous-Silicon (a-Si:H) p-i-n Solar Cell. The overall solar cell optical performance comparison between the conventional design and a proposed design including three different intermediate metallic layers (Au, Ag and Ti) is carried out numerically using accurate solutions of Maxwell’s equations. It is found that the proposed design with intermediate metallic sub-layers’ engineering provides superior integral absorption in comparison to that offered by the conventional structure. Therefore, the introduced intermediate metallic layers play a paramount role in increasing the light absorbance and modulate the electric field in the intrinsic region, where more light can be absorbed again by a-Si in the near infrared and infrared-regions using titanium as intermediate metallic layers. Furthermore, a hybrid computation based on combined numerical- metaheuristic modeling approach is proposed to boost the solar cell performance by optimizing the intermediate metallic layers. The obtained results indicate the advantage of the proposed design methodology in improving the amorphous solar cell performances.