The window layers effect on the hardness improvement of space solar cells exposed to the 1 MeV electron irradiations

Mir, Y.; Amine, A.; Bouabdellaoui, Mohammed; Zazi, K.; Zazoui, M.

doi:10.1007/s11082-013-9735-8

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…The significant diffraction resonance occur is required that the photonic crystal period (indicated by as shown in Fig. 1, ) is larger than wavelength of light in the active layer , i.e., , where represents the refractive index of active material at that particular wavelength [27] . For D < 2 μm, corresponding to smaller period, solar cells exhibit weak diffraction resonance resulting in high surface reflection in the long wavelength range of 0.85-0.9 μm, and the maximum reflection reaches 60%.…”

Section: Resultsmentioning

confidence: 99%

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Nano-sphere surface arrays based on GaAs solar cells

Peng

Gong

et al. 2020

J. Semicond.

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In this paper, we present our efforts on simulating and analyzing the effect of two-dimensional nano-sphere surface array on the characteristic of GaAs solar cells. Based on the scattering and diffraction theory of the photonic crystals, the simulation results show that the distance of adjacent nano-spheres (D) has the pronounced influence on the conversion efficiency and exhibits much poor tolerance, the absolutely conversion efficiency is reduced by exceeding of 2% as the D varies from 0 to 1 μm, in addition, the lower conversion efficiency (< 18%) is exhibited and almost remains unaltered when theD is of > 2 μm. The radius (R) of nano-spheres demonstrates much great tolerance. For D = 0, the solar cells exhibit high conversion efficiency (> 20%) and the efficiency is only varied by less than 1% whenR is varied in a very wide region of 0.3–1.2 μm. One can also find out that there is good tolerance for efficiency around the optimal value of refractive index and there is only about 0.2% decrease in final cell efficiency for around ±24% variation in the optimal values, which implys that it does not demand high precision processing equipment and the whole nano-sphere array could be fully complemented using self-assembled chemical methods.

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Section: Resultsmentioning

confidence: 99%

“…1. The wavelength dependent material parameters are considered for GaAs and AlGaAs [26] and Al [27] .…”

Section: Solar Cell Structurementioning

confidence: 99%

Nano-sphere surface arrays based on GaAs solar cells

Peng

Gong

et al. 2020

J. Semicond.

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“…In precedent work, taking into consideration the physics of the window emitter hetero-interface, we have investigated the effect of the normal window layer on solar cells degradation through its own parameters [4] [5]. This new approach which has been proved theoretically and experimentally is used to deduce the relationship between electron and hole minority-carrier lifetime.…”

Section: Introductionmentioning

confidence: 99%

“…This new approach which has been proved theoretically and experimentally is used to deduce the relationship between electron and hole minority-carrier lifetime. This paper is an extension and amelioration to what have been tackled about window and prediction of solar cell device parameters [5]. This is through the numerical simulation by rewriting the calculation principle in solar cells with different window structures, by taking into account the gradual band profile window emitter hetero-interface.…”

Section: Introductionmentioning

confidence: 99%

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Gradual Band Energy to Passivate the Window Layer in Solar Cells

Amine¹,

Bouabdellaoui²,

Zaz³

et al. 2017

SGRE

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The passivation layers at the front of the cell are often referred as to the window layer because it must be transparent so as the solar cell has a high efficiency. In this work, numerical simulation has been proposed to study the effect of the AlGaAs gradual and normal windows on the cell sensitivity to the electron irradiation so as to passivate the solar cell. To expect the effect of gradual window layers, the J-V and P-V characteristics are confirmed better energy conversion performance of the illuminated solar cells after irradiation.The short circuit current J sc and the open circuit voltage V oc are evaluated for different electron irradiation fluencies. The results show how the gradual window layer improves resistance to electron irradiation through its own parameters.

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Bose–Einstein condensation of light in a semiconductor quantum well microcavity

Schofield,

Fu,

Clarke

et al. 2024

Nat. Photon.

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When particles with integer spin accumulate at low temperature and high density, they undergo Bose–Einstein condensation (BEC). Atoms, magnons, solid-state excitons, surface plasmon polaritons and excitons coupled to light exhibit BEC, which results in high coherence due to massive occupation of the respective system’s ground state. Surprisingly, photons were shown to exhibit BEC recently in organic-dye-filled optical microcavities, which—owing to the photon’s low mass—occurs at room temperature. Here we demonstrate that photons within an inorganic semiconductor microcavity also thermalize and undergo BEC. Although semiconductor lasers are understood to operate out of thermal equilibrium, we identify a region of good thermalization in our system where we can clearly distinguish laser action from BEC. Semiconductor microcavities are a robust system for exploring the physics and applications of quantum statistical photon condensates. In practical terms, photon BECs offer their critical behaviour at lower thresholds than lasers. Our study shows two further advantages: the lack of dark electronic states in inorganic semiconductors allows these BECs to be sustained continuously; and quantum wells offer stronger photon–photon scattering. We measure an unoptimized interaction parameter ($$\tilde{{{{{g}}}}}$$ g ̃ ≳ 10–3), which is large enough to access the rich physics of interactions within BECs, such as superfluid light.

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The window layers effect on the hardness improvement of space solar cells exposed to the 1 MeV electron irradiations

Cited by 5 publications

References 13 publications

Nano-sphere surface arrays based on GaAs solar cells

Nano-sphere surface arrays based on GaAs solar cells

Gradual Band Energy to Passivate the Window Layer in Solar Cells

Bose–Einstein condensation of light in a semiconductor quantum well microcavity

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