A comprehensive investigation of the potential of metal assisted chemical etched (MACE) nano-textures over conventional micron-sized iso-textures for industrial silicon solar cell applications

Sreejith, K.; Sharma, A. K.; Basu, Prabir K.; Kottantharayil, Anil

doi:10.1016/j.solener.2021.10.035

Cited by 10 publications

(4 citation statements)

References 44 publications

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“…Several review articles are available on this topic 1 – 7 Those attempts include surface nano-texturing, 8 , 9 embedded light scatterers, 10 – 12 excitation of localized surface plasmons, 13 – 15 antireflection coating with nano-structures, 16 – 20 and so on. There also have been works where photovoltaic active layers were made with certain specific shapes to improve light coupling and retention.…”

Section: Introductionmentioning

confidence: 99%

Hemispherical-shell-shaped organic photovoltaic cells for absorption enhancement and improved angular coverage

Hah

2024

J. Photon. Energy

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A hemispherical shell shape is proposed for an organic photovoltaic cell structure, aiming at enhancing both light absorption and angular coverage. Three-dimensional finite element analysis method is used to study the absorption spectra within the hemispherical-shell-shaped active layer. The study reveals that the proposed structure can result in 66% and 36% of absorption improvements compared to a flatstructured device when the incoming light is transverse electric (TE)-and transverse magnetic (TM)-polarized, respectively. It is also learned that the proposed hemispherical shell structure has absorption improvement as high as 13% (TE) and 21% (TM) when compared to the previously reported semicylindrical shell structure. The angular coverage of the proposed structure is improved as well, reaching 81 deg (TE) and 82 deg (TM), which becomes quite useful for the wearable electronics applications where the incidence angle can vary in a random manner. These improvements can be attributed to better light coupling and guiding through the active layer made possible by the hemispherical shell shape of the device.

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Section: Introductionmentioning

confidence: 99%

Hemispherical-shell-shaped organic photovoltaic cells for absorption enhancement and improved angular coverage

Hah

2024

J. Photon. Energy

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“…In state-of-the-art silicon solar cells, the reflectance losses have been mitigated by utilizing surface nanostructures [i.e., black silicon (b-Si)], which enable a drastic decrease in total reflectance (R) over a wide wavelength range (200-1000 nm) [7], [8], [9]. While there are different methods for the fabrication of surface nanostructures, in photovoltaics, the metal-assisted chemical etching (MACE; also known as MacEtch or MCCE) technique has turned out to be the most attractive, as it is a simple, cost-efficient, and crystal-damagefree process that has been shown to be easy to scale-up industrially [10], [11], [12], [13], [14], [15]. MACE should, therefore, offer an attractive means to reduce the reflectance losses also in industrial photodiodes.…”

Section: Introductionmentioning

confidence: 99%

Excellent Responsivity and Low Dark Current Obtained With Metal-Assisted Chemical Etched Si Photodiode

et al. 2023

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Metal-assisted chemical etched (MACE; also known as MacEtch or MCCE) nanostructures are utilized widely in the solar cell industry due to their excellent optical properties combined with a simple and cost-efficient fabrication process. The photodetection community, on the other hand, has not shown much interest toward MACE due to its drawbacks, including insufficient surface passivation, increased junction recombination, and possible metal contamination, which are especially detrimental to p-n photodiodes. Here, we aim to change this by demonstrating how to fabricate high-performance MACE p-n photodiodes with above 90% external quantum efficiency (EQE) without external bias voltage at 200-1000 nm and dark current less than 3 nA/cm 2 at −5 V using industrially applicable methods. The key is to utilize an induced junction created by an atomic layer deposited (ALD) highly charged Al 2 O 3 thin film that simultaneously provides efficient field-effect passivation and full conformality over the MACE nanostructures. Achieving close to ideal performance demonstrates the vast potential of MACE nanostructures in the fabrication of high-performance low-cost p-n photodiodes.

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“…By designing appropriate surface micro-textures, the friction and wear characteristics of materials can be effectively improved, and their corrosion resistance, oxidation resistance and biocompatibility can be enhanced. Surface microstructures on metal surfaces have also been widely used in the industrial field (Sreejith et al , 2021; Du et al , 2023) and the medical and health field (Desrousseaux et al , 2013).…”

Section: Introductionmentioning

confidence: 99%

Optimization design of irregular grooved texture on the surface of sliding pair based on adaptive genetic algorithm

Shen,

Li,

et al. 2023

ILT

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Purpose This study aims to investigate the effects of irregular groove textures on the friction and wear performance of sliding contact surfaces. These textures possess multiple depths and asymmetrical features. To optimize the irregular groove texture structure of the sliding contact surface, an adaptive genetic algorithm was used for research and optimization purposes. Design/methodology/approach Using adaptive genetic algorithm as an optimization tool, numerical simulations were conducted on surface textures by establishing a dimensionless form of the Reynolds equation and setting appropriate boundary conditions. An adaptive genetic algorithm program in MATLAB was established. Genetic iterative methods were used to calculate the optimal texture structure. Genetic individuals were selected through fitness comparison. The depth of the groove texture is gradually adjusted through genetic crossover, mutation, and mutation operations. The optimal groove structure was ultimately obtained by comparing the bearing capacity and pressure of different generations of micro-convex bodies. Findings After about 100 generations of iteration, the distribution of grooved textures became relatively stable, and after about 320 generations, the depth and distribution of groove textures reached their optimal structure. At this stage, irregular texture structures can support more loads by forming oil films. Compared with regular textures, the friction coefficient of irregular textures decreased by nearly 47.01%, while the carrying capacity of lubricating oil films increased by 54.57%. The research results show that irregular texture structures have better lubrication characteristics and can effectively improve the friction performance of component surfaces. Originality/value Surface textures can enhance the friction and lubrication performance of metal surfaces, improving the mechanical performance and lifespan of components. However, surface texture processing is challenging, as it often requires multiple experimental comparisons to determine the optimal texture structure, resulting in high trial-and-error costs. By using an adaptive genetic algorithm as an optimization tool, the optimal surface groove structure can be obtained through simulation and modeling, effectively saving costs in the process.

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A comprehensive investigation of the potential of metal assisted chemical etched (MACE) nano-textures over conventional micron-sized iso-textures for industrial silicon solar cell applications

Cited by 10 publications

References 44 publications

Hemispherical-shell-shaped organic photovoltaic cells for absorption enhancement and improved angular coverage

Hemispherical-shell-shaped organic photovoltaic cells for absorption enhancement and improved angular coverage

Excellent Responsivity and Low Dark Current Obtained With Metal-Assisted Chemical Etched Si Photodiode

Optimization design of irregular grooved texture on the surface of sliding pair based on adaptive genetic algorithm

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