Optical absorption enhancement in silicon nanohole arrays for photovoltaics

Chen, Ting-Gang; Chang, F. C.; Huang, Bo-Yu; Yu, Peichen

doi:10.1109/pvsc.2011.6186541

Cited by 2 publications

(2 citation statements)

References 7 publications

(7 reference statements)

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“…In this study, we proposed a reflective meta-deflector composed of silicon nanohole arrays with anti-damage potential. Unlike the nanoholes for enhanced absorption in photovoltaics [36,37], by tuning the electric-field energy into the air zone, the in-air electric field does not interact with the silicon material directly, attenuating the optothermal effect that causes laser damage. The rules of tuning the reflectance, phase, and field distribution through the geometrical parameters are investigated numerically.…”

Section: Introductionmentioning

confidence: 99%

Meta-Deflectors Made of Dielectric Nanohole Arrays with Anti-Damage Potential

Tang

et al. 2021

Photonics

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In intense-light systems, the traditional discrete optical components lead to high complexity and high cost. Metasurfaces, which have received increasing attention due to the ability to locally manipulate the amplitude, phase, and polarization of light, are promising for addressing this issue. In the study, a metasurface-based reflective deflector is investigated which is composed of silicon nanohole arrays that confine the strongest electric field in the air zone. Subsequently, the in-air electric field does not interact with the silicon material directly, attenuating the optothermal effect that causes laser damage. The highest reflectance of nanoholes can be above 99% while the strongest electric fields are tuned into the air zone. One presentative deflector is designed based on these nanoholes with in-air-hole field confinement and anti-damage potential. The 1st order of the meta-deflector has the highest reflectance of 55.74%, and the reflectance sum of all the orders of the meta-deflector is 92.38%. The optothermal simulations show that the meta-deflector can theoretically handle a maximum laser density of 0.24 W/µm2. The study provides an approach to improving the anti-damage property of the reflective phase-control metasurfaces for intense-light systems, which can be exploited in many applications, such as laser scalpels, laser cutting devices, etc.

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Section: Introductionmentioning

confidence: 99%

Meta-Deflectors Made of Dielectric Nanohole Arrays with Anti-Damage Potential

Tang

et al. 2021

Photonics

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“…Ordered quasi-1D Si nanostructures can be also applied to Si solar cells based on radial junctions [25,[87][88][89][90]: such a geometry enables an independent optimization of the design requirements for light absorption and carrier extraction, which are the two key conditions for efficient energy conversion in a solar cell [91,92]. The 1D structures can be categorized as "positive" structures with respect to substrate, namely, structures coming out from substrates to free space, such as wires and rods, and "negative" structures, which are embedded into the substrate, like, for example, nanopores or nanoholes (NHs) [93][94][95][96]. The negative structures maintain all the advantages of the positive structures, such as optical absorption tunability and light/carrier decoupling, and in addition they exhibit an important advantage: the increased robustness to the mechanical stress.…”

Section: Applications To Devicesmentioning

confidence: 99%

Towards Ordered Silicon Nanostructures through Self‐Assembling Mechanisms and Processes

Puglisi

2015

Journal of Nanomaterials

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The design and development of innovative architectures for memory storage and energy conversion devices are at the forefront of current research efforts driving us towards a sustainable future. However, issues related to the cost, efficiency, and reliability of current technologies are still severely limiting their overtake of the standard designs. The use of ordered nanostructured silicon is expected to overcome these limitations and push the advancement of the alternative technologies. Specifically, self-assembling of block copolymers has been recognized as a promising and cost-effective approach to organize silicon nanostructures. This work reviews some of the most important findings on block copolymer self-assembling and complements those with the results of new experimental studies. First of all, a quantitative analysis is presented on the ordering and fluctuations expected in the synthesis of silicon nanostructures by using standard synthesis methods like chemical vapour deposition. Then the effects of the several parameters guiding the ordering mechanisms in the block copolymer systems, such as film thickness, molecular weight, annealing conditions, solvent, and substrate topography are discussed. Finally, as a proof of concept, an in-house developed example application to solar cells is presented, based on silicon nanostructures resulting from self-assembling of block copolymers.

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Optical absorption enhancement in silicon nanohole arrays for photovoltaics

Cited by 2 publications

References 7 publications

Meta-Deflectors Made of Dielectric Nanohole Arrays with Anti-Damage Potential

Meta-Deflectors Made of Dielectric Nanohole Arrays with Anti-Damage Potential

Towards Ordered Silicon Nanostructures through Self‐Assembling Mechanisms and Processes

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