Optical Nanoantennas for Photovoltaic Applications

Duarte, Francisco; Torres, João Paulo N.; Baptista, António; Lameirinhas, Ricardo A. Marques

doi:10.3390/nano11020422

Cited by 24 publications

(27 citation statements)

References 41 publications

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“…This junction creates a charge separation of electron and holes and when the junction is formed, the large carrier concentration gradients cause the diffusion of carriers, i.e., holes diffuse from p-type semiconductors to n-type semiconductors and electrons diffuse from the way around. Because of the ionized impurity atoms, a layer without mobile charge carriers is formed when the electrons and holes diffuse across the junction, hence creating an electric field in this area which is called the depletion region (Batista et al, 2012); Soga et al, 2006;Duarte et al, 2021;Isabela et al, 2021;dos Santos et al, 2021).…”

Section: Electrical Properties Of a P-n Junctionmentioning

confidence: 99%

“…This current is called the photogenerated current IL, created by the generation of electron-hole pairs due to the incident light. This current is proportional to the light intensity Labouret et al (2010); Duarte et al (2021); Isabela et al (2021); dos Santos et al (2021). In that expression, Iis represents the inverse saturation current of the p-n junction, n its ideality-factor and Vt the thermal voltage.…”

Section: P-n Junctions As Solar Cellsmentioning

confidence: 99%

“…Most of the PV waste ends up in landfills and given the presence of numerous toxic materials, it can lead to a dangerous source of pollution, such as the pollution of ground waters. Despite the environmental hazardous materials, some of modules contain valuable metals such as Silver, Copper and Gold which can be extracted for re-fabrication purposes, therefore bringing an extra value for recycling these metals and materials Duarte et al (2021); dos Santos et al (2021); Durão et al (2020).…”

Section: Spin Off Evaporationmentioning

confidence: 99%

See 2 more Smart Citations

Wearable Photovoltaic Applications as Energy Sources for Everyday Devices

Ravasco¹,

Torres²,

Lameirinhas³

2021

American Journal of Engineering and Applied Sciences

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Solar technology since its first implementation for energy production has evolved in numerous directions to become part of a normal reality in future energy systems. The people's energetic consumption changed as well. In the present days, people use portable devices more than ever, such as mobile phones and laptops and to power these portable devices, batteries are used. But what if we did not use batteries? or what if we could just keep charging our portable devices on the go? Flexible solar cells' efficiency has been increasing throughout the years, especially the perovskite material that in the last years have reached a power conversion efficiency above the 20% mark. This opened the possibility to tackle other areas that traditional solar cells could not, including the possibility to use solar cells as a wearable source of power for our daily gadgets. Three types of materials will be shown as wearable solar cells and the evolution of perovskite material will be presented in order to set the state-of-art for future works in this domain.

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Section: Electrical Properties Of a P-n Junctionmentioning

confidence: 99%

Section: P-n Junctions As Solar Cellsmentioning

confidence: 99%

Section: Spin Off Evaporationmentioning

confidence: 99%

See 1 more Smart Citation

Wearable Photovoltaic Applications as Energy Sources for Everyday Devices

Ravasco¹,

Torres²,

Lameirinhas³

2021

American Journal of Engineering and Applied Sciences

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“…The performance analysis of a specific photovoltaic installation requires the creation of a set of dedicated models to describe different functions in the installation [24][25][26]. A photovoltaic installation usually consists of: photovoltaic panels, an inverter and power electronics systems that control the installation operation [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Reliability-Oriented Design of a Solar-PV Deployments

2021

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Increasing restrictions on the emission of greenhouse gases by the standards and the European Union’s policy aims at increasing the share of renewable energy sources in the energy mix of the Member States. Subsequently, we observe a rapid increase in the installed capacity of the renewable energy sources. Renewable energy sources are currently the fastest growing sectors of energy generation, specifically the photovoltaic sector. In 2005, the total installed capacity in photovoltaic installations in the European Union was about 2.17 GW, while in 2019 it was already over 130 GW. Currently, due to many forms of incentive governmental measures the construction of photovoltaic installations is rapidly increasing with installations mounted on private houses and buildings. The article presents selected issues concerning the failure modes of photovoltaic installations and a comparative assessment of the estimated and the real measured electrical production of an operational photovoltaic installation. The Solar-PV power plant design approach proposed in the paper considers the failure modes to enhance the plant’s reliability.

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“…Energy demand has been steadily increasing since the Industrial Revolution and should continue to increase, accompanied by global population growth [1][2][3][4][5]. Although renewable energy use is increasing globally, as of 2018 these sources of energy only accounted for less than 20% of the world's primary energy consumption [5].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Solar Cells with Integration of Optical Nanoantennas

Caetano¹,

Torres

Lameirinhas

2021

Nanomaterials

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The evolution of nanotechnology has provided a better understanding of light-matter interaction at a subwavelength scale and has led to the development of new devices that can possibly play an important role in future applications. Nanoantennas are an example of such devices, having gained interest in recent years for their application in the field of photovoltaic technology at visible and infrared wavelengths, due to their ability to capture and confine energy of free-propagating waves. This property results from a unique phenomenon called extraordinary optical transmission (EOT) where, due to resonant behavior, light passing through subwavelength apertures in a metal film can be transmitted in greater orders of magnitude than that predicted by classical theories. During this study, 2D and 3D models featuring a metallic nanoantenna array with subwavelength holes coupled to a photovoltaic cell are simulated using a Finite Element Tool. These models present with slight variations between them, such as the position of the nanoantenna within the structure, the holes’ geometry and the type of cell, in order to verify how its optical response is affected. The results demonstrate that the coupling of nanoantennas to solar cells can be advantageous and improve the capture and absorption of radiation. It is concluded that aperture nanoantennas may concentrate radiation, meaning that is possible to tune the electric field peak and adjust absorption on the main layers. This may be important because it might be possible to adjust solar cell performance to the global regions’ solar spectrum by only adjusting the nanoantenna parameters.

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Optical Nanoantennas for Photovoltaic Applications

Cited by 24 publications

References 41 publications

Wearable Photovoltaic Applications as Energy Sources for Everyday Devices

Wearable Photovoltaic Applications as Energy Sources for Everyday Devices

Reliability-Oriented Design of a Solar-PV Deployments

Simulation of Solar Cells with Integration of Optical Nanoantennas

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