A Fairness-Aware and Privacy-Preserving Online Insurance Application System

Zhang, Aiqing; Bacchus, Abel; Lin, Xiaodong

doi:10.1109/glocom.2016.7841495

Cited by 8 publications

(2 citation statements)

References 8 publications

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“…The dominant recombination mechanism of carriers in the device is the Shockley-Read-Hall (SRH), which the surface recombination velocities of electrons and holes are set as S n = S p = 10 7 cm s −1 . The electrical parameters of PSC related to TiO 2 [27][28][29][30][31][32][33], perovskite [27,[34][35][36], CuSCN [37] and GeSe [14,38,39] can be observed in table 1.…”

Section: Electrical Modelmentioning

confidence: 99%

Efficiency enhancement of perovskite solar cells by designing GeSe nanowires in the structure of the adsorbent layer

et al. 2020

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In this paper, coupled optical and electrical simulations of perovskite solar cells (PSCs) are performed to optimize their basis output parameters and obtain the best power conversion efficiency (PCE) based on both the light absorption and carrier transport mechanisms. Due to the limitations of perovskite absorption in longer wavelengths, we used an extra photo-active material of GeSe with a narrower bandgap and a broader absorbing spectrum to increase the efficiency of the PSC. To prevent carrier transmission disorder that exists in the planar structure with two absorbing materials, GeSe was inserted into the main active layer in the form of nanowires (NWs). As a result, it improved the carrier transfer and open-circuit voltage (V oc ) in addition to the short-circuit current density (J sc ). The behavior of PSC with different sizes of GeSe NWs at the same density was investigated to determine the appropriate size of NWs and achieve the highest PCE. In the optimal structure with 50 nm diameter NWs, J sc and PCE of the cell are 22.96 mA cm −2 and 18.97%, which are improvements of 39% and 50%, respectively, compared to the planar structure studied at the beginning of the paper.

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Section: Electrical Modelmentioning

confidence: 99%

Efficiency enhancement of perovskite solar cells by designing GeSe nanowires in the structure of the adsorbent layer

et al. 2020

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“…The trap-assisted recombination model is used to simulate the recombination rate within bulk materials, which is directly related to the volume of the layers. In Table 1, Ꜫr denotes the relative permittivity Nc and Nv are effective conduction band and valance band densities, µn and µp are electron and hole mobilities, χ is electron affinity, Eg is the band gap, NA and ND are acceptor and donor densities, and τp, τn are the life times of hole and electron [51][52][53][54][55][56][57][58][59][60][61][62][63][64][65].…”

Section: Simulation Detailsmentioning

confidence: 99%

Morphological investigation and 3D simulation of plasmonic nanostructures to improve the efficiency of perovskite solar cells

Mohammadi¹

2023

Preprint

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The process of absorbing light in perovskite solar cells (PSC) is one of the effective factors in improving the performance of this type of cells. Using arrays of metal nanostructures on semiconductors such as perovskite (CH3NH3PbI3), the amount of light absorption in these layers is significantly increased. Metal nanostructures have been considered for their ability to excite plasmons (Collective oscillations of free electrons). Noble metal nanoparticles placed inside solar cells, by increasing the scattering of the incident light, effectively increase the optical absorption inside PSCs. Increasing the optical absorption increases the electric current generated in the photovoltaic device. In this study, by calculating the cross-sectional area of dispersion and absorption on gold (Au) nanoparticles, the effects of the position of nanoparticles in the active layer and their morphology on the increase of absorption within the PSC were investigated. The proper position of the plasmonic nanoparticle was obtained in the middle of the active layer. In a three-dimensional (3D) simulation, the proper position of the plasmonic nanoparticle was obtained in the middle of the active layer. Then, three different morphologies of nano-sphere, nano-star and nano-cubes were investigated, and the short-circuit currents (Jsc) for these three nanostructures were 19.01 (mA/cm2), 18.66 (mA/cm2) and 20.03(mA/cm2) respectively. In this study, the best morphology of the nanostructure according to the Jsc was related to the nano-cube, in which the device power conversion efficiency (PCE) was equal to 16.20%, which is about 15% better than the PSC with the planar architecture.

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Effects of the location and size of plasmonic nanoparticles (Ag and Au) in improving the optical absorption and efficiency of perovskite solar cells

Mohammadi

Eskandari

Fathi

2021

Journal of Alloys and Compounds

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A Fairness-Aware and Privacy-Preserving Online Insurance Application System

Cited by 8 publications

References 8 publications

Efficiency enhancement of perovskite solar cells by designing GeSe nanowires in the structure of the adsorbent layer

Efficiency enhancement of perovskite solar cells by designing GeSe nanowires in the structure of the adsorbent layer

Morphological investigation and 3D simulation of plasmonic nanostructures to improve the efficiency of perovskite solar cells

Effects of the location and size of plasmonic nanoparticles (Ag and Au) in improving the optical absorption and efficiency of perovskite solar cells

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