Lamella Silicon Solar Cell under Both Temperature and Magnetic Field: Width Optimum Determination

Faye, Dibor; Gueye, Sega; Ndiaye, Mor; Ba, Mamadou Lamine; Diatta, Ibrahima; Traore, Youssou; Diop, Masse Samba; Diop, Gora; Diao, Amadou; Sissoko, G.

doi:10.4236/jemaa.2020.124005

Cited by 11 publications

(7 citation statements)

References 49 publications

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“…They carried the neutral zones on either side of the junction. If the device is insulated, a potential difference appears across the junction and if it is connected to an external electric charge, free electrons must pass through the charge to recombine with positive holes; thus, current can be generated from the cells under illumination [24].…”

Section: Methodsmentioning

confidence: 99%

Influence of Dust Deposition on the Electrical Parameters of Silicon-Based Solar Panels Installed in Senegal (Dakar Region)

Diop¹,

Diagne²,

Sambou³

et al. 2021

EPE

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In recent years, photovoltaic (PV) modules are widely used in many applications around the world. However, this renewable energy is plagued by dust, airborne particles, humidity, and high ambient temperatures. This paper studies the effect of dust soiling on silicon-based photovoltaic panel performance in a mini-solar power plant located in Dakar (Senegal, 14˚42'N latitude, 17˚28'W longitude). Results of the current-voltage (I -V) characteristics of photovoltaic panels tested under real conditions. We modeled a silicon-based PV cell in a dusty environment as a stack of thin layers of dust, glass and silicon. The silicon layer is modeled as a P-N junction. The study performed under standard laboratory conditions with input data of irradiation at 1000 W/m 2 , cell temperature at 25˚C and solar spectrum with Air Mass (AM) at 1.5 for the monocrystalline silicon PV cell (m-Si). The analysis with an ellipsometer of dust samples collected on photovoltaic panels allowed to obtain the refraction indices (real and imaginary) of these particles which will complete the input parameters of the model. Results show that for a photon flux arriving on dust layer of 70 μm (corresponding to dust deposit of 3.3 g/m 2 ) deposited on silicon-based PV cells, short circuit current decreases from 54 mA (for a clean cell) to 26 mA. Also, conversion efficiency decreases by 50% compared to clean cell and the cell fill factor decreases by 76% -50% compared to reference PV cell.

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Section: Methodsmentioning

confidence: 99%

Influence of Dust Deposition on the Electrical Parameters of Silicon-Based Solar Panels Installed in Senegal (Dakar Region)

Diop¹,

Diagne²,

Sambou³

et al. 2021

EPE

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“…-The magnetic field and temperature applied to front illuminated (n + -p-p + ) silicon solar cell [46].…”

Section: Optimum Thickness Determination Techniquementioning

confidence: 99%

A.C. Recombination Velocity as Applied to Determine n<sup>+</sup>/p/p<sup>+</sup> Silicon Solar Cell Base Optimum Thickness

Ndiaye¹,

Gueye²,

Sow³

et al. 2020

EPE

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This work deals with determining the optimum thickness of the base of an n + /p/p + silicon solar cell under monochromatic illumination in frequency modulation. The continuity equation for the density of minority carriers generated in the base, by a monochromatic wavelength illumination (λ), with boundary conditions that impose recombination velocities (Sf) and (Sb) respectively at the junction and back surface, is resolved. The ac photocurrent is deduced and studied according to the recombination velocity at the junction, to extract the mathematical expressions of recombination velocity (Sb). By the graphic technique of comparing the two expressions obtained, depending on the thickness (H) of the base, for each frequency, the optimum thickness (Hopt) is obtained. It is then modeled according to the frequency, at the long wavelengths of the incident light. Thus, Hopt decreases due to the low relaxation time of minority carriers, when the frequency of modulation of incident light increases.

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“…It is then analyzed at the high values of the junction recombination velocity (Sf) that impose the short circuit operating point to the solar cell. The expressions of the ac recombination velocity, are then deduced [41] [44] [45] [46] and their comparison by the graphic method [47] [48] [49] [50], leads to the determination of optimum thickness (Hopt(Dmax)) and modeled according to the frequency of resonance (ωr).…”

Section: Introductionmentioning

confidence: 99%

Diffusion Coefficient at Resonance Frequency as Applied to n+/p/p+ Silicon Solar Cell Optimum Base Thickness Determination

Ndiaye¹,

Gueye²,

Fall³

et al. 2020

JEMAA

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The modelling and determination of the geometric parameters of a solar cell are important data, which influence the evaluation of its performance under specific operating conditions, as well as its industrial development for a low cost. In this work, an n+/p/p+ crystalline silicon solar cell is studied under monochromatic illumination in modulation and placed in a constant magnetic field. The minority carriers' diffusion coefficient (D(ω, B), in the (p) base leads to maximum values (Dmax) at resonance frequencies (ωr). These values are used in expressions of AC minority carriers recombination velocity (Sb(Dmax, H)) in the rear of the base, to extract the optimum thickness while solar cell is subjected to these specific conditions. Optimum thickness modelling relationships, depending respectively on Dmax, ωr and B, are then established, and will be data for industrial development of low-cost solar cells for specific use.

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Lamella Silicon Solar Cell under Both Temperature and Magnetic Field: Width Optimum Determination

Cited by 11 publications

References 49 publications

Influence of Dust Deposition on the Electrical Parameters of Silicon-Based Solar Panels Installed in Senegal (Dakar Region)

Influence of Dust Deposition on the Electrical Parameters of Silicon-Based Solar Panels Installed in Senegal (Dakar Region)

A.C. Recombination Velocity as Applied to Determine n<sup>+</sup>/p/p<sup>+</sup> Silicon Solar Cell Base Optimum Thickness

Diffusion Coefficient at Resonance Frequency as Applied to n+/p/p+ Silicon Solar Cell Optimum Base Thickness Determination

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Lamella Silicon Solar Cell under Both Temperature and Magnetic Field: Width Optimum Determination

Cited by 11 publications

References 49 publications

Influence of Dust Deposition on the Electrical Parameters of Silicon-Based Solar Panels Installed in Senegal (Dakar Region)

Influence of Dust Deposition on the Electrical Parameters of Silicon-Based Solar Panels Installed in Senegal (Dakar Region)

A.C. Recombination Velocity as Applied to Determine n&lt;sup&gt;+&lt;/sup&gt;/p/p&lt;sup&gt;+&lt;/sup&gt; Silicon Solar Cell Base Optimum Thickness

Diffusion Coefficient at Resonance Frequency as Applied to n+/p/p+ Silicon Solar Cell Optimum Base Thickness Determination

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A.C. Recombination Velocity as Applied to Determine n<sup>+</sup>/p/p<sup>+</sup> Silicon Solar Cell Base Optimum Thickness