Single crystalline silicon solar cells with rib structure

Yoshiba, Shuhei; Hirai, M.; Abe, Yusuke; Konagai, Makoto; Ichikawa, Yukimi

doi:10.1063/1.4976721

Cited by 12 publications

(5 citation statements)

References 5 publications

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“…The fabrication of the cell involves immersion in a mixed solution of KOH, water, and isopropanol to obtain a randomly distributed microgrooved surface texture, followed by the formation of top contacts (Ag) and bottom contacts (Al/Ag) using a screen printing process. Yoshiba et al 11 used Silvaco software to perform a two-dimensional device simulation in order to understand the device characteristics of an SCSSC with ridge structure. The use of KOH anisotropic etching means that the cross-sectional shape of the rib is an isosceles trapezoid, where the side legs form an angle of 54.7°with the lower base.…”

Section: Structure Of Single Crystalline Siliconmentioning

confidence: 99%

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Progress and Perspectives of Solar Cells: A Critical Review

Lin,

Zhang,

Yang

et al. 2023

Energy Fuels

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Solar technology refers to technology that uses solar radiation to generate electricity or utilize thermal energy. Solar energy is environmentally friendly, renewable, noiseless, and pollution-free and does not require fuel, making it a form of renewable energy. A solar cell (SC) comprises multiple thin layers of semiconductor materials. When sunlight shines on an SC, photons excite electrons in the semiconductor materials, generating an electric current. In recent years, there have been rapid advancements in SC research, primarily focused on improving efficiency and reducing costs. This article offers a comprehensive overview of the recent advancements in SC research. It summarizes the various types of SCs, including their structures, fabrication processes, and application areas. It then summarizes the bottleneck issues and solutions in the preparation of semiconductor materials for SCs, external environmental impacts, and cell stability. Finally, it discusses the opportunities and challenges of SCs. Although SC research still faces some difficulties, with continuous technological advancements, SCs will become an essential component of future clean energy.

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Section: Structure Of Single Crystalline Siliconmentioning

confidence: 99%

Section: Single Crystalline Silicon Scsmentioning

confidence: 99%

Progress and Perspectives of Solar Cells: A Critical Review

Lin,

Zhang,

Yang

et al. 2023

Energy Fuels

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“…The rib structure, in which the c-Si wafers are partially thinned except the rib regions, secures the mechanical strength of thin cells for practical uses. 41) Detailed simulation including light intensity distribution and carrier transport in the lateral direction is required to design a concrete structure of these types of PV cells.…”

Section: Impacts Of Electronic Properties On Pv Performancementioning

confidence: 99%

Crystalline silicon photovoltaic cells used for power transmission from solar-pumped lasers: II. Practical implementations

Takeda

Yamada

Ito

et al. 2018

Jpn. J. Appl. Phys.

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We have designed crystalline silicon photovoltaic (PV) cells used for power transmission from solar-pumped lasers (SPLs) emitting at 1064 nm. The practical light-trapping performance of the combination of a multilayered angle-selective filter on the front surface and a diffuse reflector on the rear surface was evaluated by ray-trace simulation, which was taken into account in device simulation. When the SPLs illuminate stationary PV cells or are connected using optical fibers and hence the incident angles to the PV cells are within 10°, a high laser-to-electricity conversion efficiency of around 50% would be feasible under 100 W/cm 2 laser illumination using the 50-µm-thick cells. For power transmission to moving objects such as electric vehicles, in which the incident angles change up to 30°, the efficiency of the 75-µm-thick cells is slightly lower because of the less significant light-trapping effect. To realize these high efficiencies, reduction of contact resistance and surface recombination velocity is required.

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“…This cell exhibits an open circuit voltage (V OC ) of 0.744 V. One route to higher V OC and efficiency is to decrease the Si−thickness for reduced bulk recombination when the Si surface is well passivated [6][7][8]. For example, V OC = 0.760 V was experimentally achieved by Herasimenka et al in a 50 µm thick c − Si single heterojunction (SHJ) solar cell [7].…”

Section: Introductionmentioning

confidence: 99%

Designing High-Efficiency Thin Silicon Solar Cells Using Parabolic-Pore Photonic Crystals

Bhattacharya

John

2018

Phys. Rev. Applied

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We demonstrate the efficacy of wave-interference based light-trapping and carrier transport in parabolic-pore photonic crystal, thin-crystalline silicon (c − Si) solar cells to achieve above 29% power conversion efficiencies. Using rigorous solution of Maxwell's equations through a standard finite difference time domain (FDTD) scheme, we optimize the design of the vertical-parabolic-pore photonic crystal (PhC) on a 10 µm thick c − Si to obtain a maximum achievable photocurrent density (MAPD) of 40.6 mA/cm 2 , beyond the ray optics, Lambertian light-trapping limit. For a slanted-parabolic-pore PhC, that breaks x − y symmetry, improved light-trapping occurs due to better coupling into parallel-to-interface refraction (PIR) modes. We achieve optimum MAPD of 41.6 mA/cm 2 for a tilt angle of 10 • with respect to the vertical axis of the pores. This MAPD is further improved to 41.72 mA/cm 2 by introducing a 75 nm SiO2 anti-reflection coating (ARC) on the top of the solar cell. We use this MAPD and associated charge-carrier generation profile as input for numerical solution of the Poisson's equation coupled with semiconductor drift-diffusion equations using a Shockley-Read-Hall and Auger recombination model. Using experimentally achieved surface recombination velocities of 10 cm/s, we identify semiconductor doping profiles that yield power conversion efficiency over 29%. Practical considerations of additional upper-contact losses suggest efficiencies close to 28%. This improvement beyond the current world record is largely due to an open-circuit voltage approaching 0.8 V enabled by reduced bulk recombination in our thin-silicon architecture while maintaining a high short-circuit current through wave-interference-based lighttrapping.

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Single crystalline silicon solar cells with rib structure

Cited by 12 publications

References 5 publications

Progress and Perspectives of Solar Cells: A Critical Review

Progress and Perspectives of Solar Cells: A Critical Review

Crystalline silicon photovoltaic cells used for power transmission from solar-pumped lasers: II. Practical implementations

Designing High-Efficiency Thin Silicon Solar Cells Using Parabolic-Pore Photonic Crystals

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