The PV‐FIBRE concentrator: a system for indoor operation of 1000X MJ solar cells

Antón, Ignacio; Silva, D.; Sala, Gabriel; Bett, Andreas W.; Siefer, Gerald; Luque-Heredia, I.; Trebst, T.

doi:10.1002/pip.745

Cited by 17 publications

(11 citation statements)

References 15 publications

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“…This determined that optical fibers have historically been used in telecommunication and sensing systems to transmit signals in the infrared domain [126][127][128][129]. However, the recent technological advances in fields like UV photolithography [130,131], laser surgery [132][133][134], and fiberbased photovoltaics [135][136][137][138][139][140][141] have given a new impulse towards the development of waveguides able to withstand the damaging effects of high-energy photons and maintain a high transmittance of UV and optical signals.…”

Section: Photodarkening In Optical Fibersmentioning

confidence: 99%

Intrinsic Point Defects in Silica for Fiber Optics Applications

2021

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Due to its unique properties, amorphous silicon dioxide (a-SiO2) or silica is a key material in many technological fields, such as high-power laser systems, telecommunications, and fiber optics. In recent years, major efforts have been made in the development of highly transparent glasses, able to resist ionizing and non-ionizing radiation. However the widespread application of many silica-based technologies, particularly silica optical fibers, is still limited by the radiation-induced formation of point defects, which decrease their durability and transmission efficiency. Although this aspect has been widely investigated, the optical properties of certain defects and the correlation between their formation dynamics and the structure of the pristine glass remains an open issue. For this reason, it is of paramount importance to gain a deeper understanding of the structure–reactivity relationship in a-SiO2 for the prediction of the optical properties of a glass based on its manufacturing parameters, and the realization of more efficient devices. To this end, we here report on the state of the most important intrinsic point defects in pure silica, with a particular emphasis on their main spectroscopic features, their atomic structure, and the effects of their presence on the transmission properties of optical fibers.

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Section: Photodarkening In Optical Fibersmentioning

confidence: 99%

Intrinsic Point Defects in Silica for Fiber Optics Applications

2021

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“…1. A sunlight concentrator based on the "fiber optic concentrator" concept (Antón et al, 2007;Arnaoutakis et al, 2013) (Fig. la) can be used for keeping the SISTPV unit vertically oriented during the full day.…”

Section: System Descriptionmentioning

confidence: 99%

Steady state analysis of a storage integrated solar thermophotovoltaic (SISTPV) system

2013

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This paper presents the theoretical analysis of a storage integrated solar thermophotovoltaic (SISTPV) system operating in steady state. These systems combine thermophotovoltaic (TPV) technology and high temperature thermal storage phase-change materials (PCM) in the same unit, providing a great potential in terms of efficiency, cost reduction and storage energy density. The main attraction in the proposed system is its simplicity and modularity compared to conventional Concentrated Solar Power (CSP) technologies. This is mainly due to the absence of moving parts. In this paper we analyze the use of Silicon as the phase change material (PCM). Silicon is an excellent candidate because of its high melting point (1680 K) and its very high latent heat of fusion of 1800 kJ/kg, which is about ten times greater than the conventional PCMs like molten salts. For a simple system configuration, we have demonstrated that overall conversion efficiencies up to ~35% are approachable. Although higher efficiencies are expected by incorporating more advanced devices like multijunction TPV cells, narrow band selective emitters or adopting near-field TPV configurations as well as by enhancing the convective/conductive heat transfer within the PCM. In this paper, we also discuss about the optimum system configurations and provide the general guidelines for designing these systems. Preliminary estimates of night time operations indicate it is possible to achieve over 10 h of operation with a relatively small quantity of Silicon.

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“…It guarantees that the circular sectors are receiving the same amount of light due to their radial distribution although the spot of light is not fully covering the receiver surface (Figure 2). The proposed solution is valid not only for very large collectors but also for medium or small size continuous parabolic dishes 2, which can be manufactured at lower cost than facet mirrors. Two prototypes have been built and tested.…”

Section: Introductionmentioning

confidence: 99%

Radial CPV receiver

Vivar

Antón

Sala

2010

Progress in Photovoltaics

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Concentration Photovoltaic (CPV) parabolic dishes uses to concentrate the sunlight creating a spot of light with radial symmetry, which does not match with the conventional rectangular solar cells receivers. Our approach for reducing the severe optical mismatch consists of using a receiver with radial arrangement of the cells into circular sectors that can minimise the current mismatch. It guarantees that the circular sectors are receiving the same amount of light due to their radial distribution. On the other hand, when tracking errors move the focus off the central position, interconnection of opposite circular sectors in parallel can compensate the current mismatch and so the power losses are significantly reduced.

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The PV‐FIBRE concentrator: a system for indoor operation of 1000X MJ solar cells

Cited by 17 publications

References 15 publications

Intrinsic Point Defects in Silica for Fiber Optics Applications

Intrinsic Point Defects in Silica for Fiber Optics Applications

Steady state analysis of a storage integrated solar thermophotovoltaic (SISTPV) system

Radial CPV receiver

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