3D determination of the minority carrier lifetime and the p-n junction recombination velocity of a polycrystalline silicon solar cell

Sam, Raguilignaba; Zouma, Bernard; Zougmoré, François; Koalaga, Zacharie; Zoungrana, Martial; Zerbo, Issa

doi:10.1088/1757-899x/29/1/012018

Cited by 10 publications

(10 citation statements)

References 7 publications

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“…The experimental set-up is composed of: a mono-facial silicon solar cell manu- The experimental system principle operating is the same described by Sam et al and R. Sam et al [9] [10]. In additional, we consider the stroboscope flash is near of AM1.5 spectrum and the solar in operating conditions where there are not others fields.…”

Section: Methodsmentioning

confidence: 99%

Experimental Measurement of Minority Carriers Effective Lifetime in Silicon Solar Cell Using Open Circuit Voltage Decay under Magnetic Field in Transient Mode

Diasso¹,

Sam²,

Zouma³

et al. 2020

SGRE

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This manuscript presents a simple method for excess minority carriers' lifetime measurement within the base region of p-n junction polycrystalline solar cell in transient mode. This work is an experimental transient 3-Dimensionnal study. The magnitude of the magnetic field B is varied from 0 mT to 0.045 mT. Indeed, the solar cell is illuminated by a stroboscopic flash with air mass 1.5 and under magnetic field in transient state. The experimental details are assumed in a figure. The procedure is outlined by the Open Circuit Voltage Decay analysis. Effective minority carrier lifetime is calculated by fitting the linear zone of the transient voltage decay curve because linear decay is an ideal decay. The kaleidagraph software permits access to the slope of the curve which is inversely proportional to the lifetime. The external magnetic effects on minority carriers' effective lifetime is then presented and analyzed. The analysis shows that the charge carrier's effective lifetime decrease with the magnetic field increase.

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Section: Methodsmentioning

confidence: 99%

Experimental Measurement of Minority Carriers Effective Lifetime in Silicon Solar Cell Using Open Circuit Voltage Decay under Magnetic Field in Transient Mode

Diasso¹,

Sam²,

Zouma³

et al. 2020

SGRE

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“…Fig. 1: A model of grain in the polycrystalline sample  The electric field of crystal lattice is negligible (Sam et al, 2012).  Only the contribution of the base in the process of generation is considered.…”

Section: Methodsmentioning

confidence: 99%

External Magnetic Field and Air Mass Effects on Carrier’s Effective Lifetime of a Bifacial Solar Cell under Transient State

Diasso¹,

Sam²,

Zougmore³

2020

RJASET

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This paper presents a theoretical study of the external magnetic field and the air mass effects on the carrier density, the transient open circuit voltage decay and the effective minority carrier's lifetime in a polycrystalline silicon solar cell. From a theoretical approach based on the columnar model of the grains and the quasi-neutral base, the three-dimensional diffusion equation is established and the boundaries conditions are defined in order to use Green's functions to solve this equation. New analytical expressions of carrier's density and transient voltage are also found. The magnetic field and the air mass impacts on transient electrons density and transient open circuit voltage are then analyzed. The effective minority carrier lifetime is extracted from the curve versus time of transient open circuit voltage decay for different values of magnetic field and air mass.

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“…At the junction z = 0 A solution of equation 1is given by expression (11) according to the author of the reference [16].…”

Section: Diffusion Equation Resolutionmentioning

confidence: 99%

Effects of External Magnetic Field and Air Mass on Space Charge Region Width Extension of a Bifacial Solar Cell Front Side Illumination

Diasso¹,

Sam²,

Traoré³

et al. 2020

IJEPE

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The environmental and economical merits of converting solar energy into electricity via photovoltaic cells have caused an ever increasing interest among developed and developing countries to allocate more budget on photovoltaic systems in order to boost up their efficiency in recent years. Besides the material and design parameters, there are several external factors such as magnetic field, air mass, intense light, external electric field, solar spectrum…. that can influence the PV cell's performance. There have been a handful of studies conducted on the effect of various influential parameters on the efficiency and performance of photovoltaic cells; however none has taken these two parameters (magnetic field and air mass) into account simultaneously. In this 3D study the effects of magnetic field and the air mass illumination on space charge region width extension of a bifacial polycristalline solar cell front side illumination will be elaborated. Based on the columnar model of the grain and the quasi-neutral base, the continuity equation is established and the boundaries conditions are defined in order to use Green's functions to solve this equation. New analytical expression of charge carriers' density is found and the diffusion capacitance to the junction is calculated. The normalized carriers' density plot versus base depth and magnetic field with various air mass illumination are presented and analyzed. The effects of magnetic field and air mass illumination on space charge region width extension are then deducted. The influences of magnetic field and air mass illumination on the junction capacitance and on the reverse of junction capacitance are also shown and analyzed.

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3D determination of the minority carrier lifetime and the p-n junction recombination velocity of a polycrystalline silicon solar cell

Cited by 10 publications

References 7 publications

Experimental Measurement of Minority Carriers Effective Lifetime in Silicon Solar Cell Using Open Circuit Voltage Decay under Magnetic Field in Transient Mode

Experimental Measurement of Minority Carriers Effective Lifetime in Silicon Solar Cell Using Open Circuit Voltage Decay under Magnetic Field in Transient Mode

External Magnetic Field and Air Mass Effects on Carrier’s Effective Lifetime of a Bifacial Solar Cell under Transient State

Effects of External Magnetic Field and Air Mass on Space Charge Region Width Extension of a Bifacial Solar Cell Front Side Illumination

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