Fatigue degradation and electric recovery in Silicon solar cells embedded in photovoltaic modules

Paggi, Marco; Berardone, Irene; Infuso, Andrea; Corrado, Mauro

doi:10.1038/srep04506

Cited by 86 publications

(61 citation statements)

References 21 publications

(33 reference statements)

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“…The proposed method is applied to pre-cracked monocrystalline Si cells embedded in semi-flexible modules made of 2 rows of 5 cells (see [8] for more details). Loaded and unloaded conditions have been considered in order to change the stress field in the cells.…”

Section: Generalization Of the Electric Model In Case Of Cracksmentioning

confidence: 99%

“…According to this pure geometrical criterion which does not take into account neither physical mechanisms such as thermo-mechanical deformation, nor the fact that the cells are embedded in the composite PV module, worstcase scenarios have been predicted by considering all the experimentally detected [2] or numerically simulated [7] cracks as perfectly insulated lines. In reality, it is reasonable to expect intermediate configurations where cracks may partially conduct depending on the relative crack opening displacement at crack faces [8].…”

Section: Introductionmentioning

confidence: 99%

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A Generalized Electric Model for Mono and Polycrystalline Silicon in the Presence of Cracks and Random Defects

2014

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Section: Generalization Of the Electric Model In Case Of Cracksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Generalized Electric Model for Mono and Polycrystalline Silicon in the Presence of Cracks and Random Defects

2014

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“…12b). Such cracks are very harmful, since their electric resistance may increase under the action of mechanical loading and degrade with time due to thermoelastic effects [21][22][23].…”

Section: F Advanced Diagnostic Techniquesmentioning

confidence: 99%

A power and energy procedure in operating photovoltaic systems to quantify the losses according to the causes

et al. 2015

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Recently, after high feed-in tariffs in Italy, retroactive cuts in the energy payments have generated economic concern about several grid-connected photovoltaic (PV) systems with poor performance. In this paper the proposed procedure suggests some rules for determining the sources of losses and thus minimizing poor performance in the energy production. The on-site field inspection, the identification of the irradiance sensors, as close as possible the PV system, and the assessment of energy production are three preliminary steps which do not require experimental tests. The fourth step is to test the arrays of PV modules on-site. The fifth step is to test only the PV strings or single modules belonging to arrays with poor performance (e.g., I-V mismatch). The sixth step is to use the thermo-graphic camera and the electroluminescence at the PV-module level. The seventh step is to monitor the DC racks of each inverter or the individual inverter, if equipped with only one Maximum Power Point Tracker (MPPT). Experimental results on real PV systems show the effectiveness of this procedure.

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“…By reducing the thickness of the Si wafer it is still possible to fabricate semiflexible modules with high efficiency (B15-20%); however, bending radius o10 cm induces damage to the module. 69 To overcome the brittleness of large Si crystalline wafers, new concepts have been developed. The Si wafer is structured in very thin (1-2 mm) electrically-interconnected stripes allowing to dramatically reduce the bending radius to the cm scale without large decreases in PCE (module efficiency B18.3%).…”

Section: View Article Onlinementioning

confidence: 99%

Progress, challenges and perspectives in flexible perovskite solar cells

Giacomo

Fakharuddin

Jose

et al. 2016

Energy Environ. Sci.

372

257

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a Perovskite solar cells have attracted enormous interest since their discovery only a few years ago because they are able to combine the benefits of high efficiency and remarkable ease of processing over large areas. Whereas most of research has been carried out on glass, perovskite deposition and synthesis is carried out at low temperatures (o150 1C) to convert precursors into its final semiconducting form. Thus, developing the technology on flexible substrates can be considered a suitable and exciting arena both from the manufacturing view point (e.g. web processing, low embodied energy manufacturing) and that of the applications (e.g. flexible, lightweight, portable, easy to integrate over both small, large and curved surfaces). Research has been accelerating on flexible PSCs and has achieved notable milestones including PCEs of 15.6% on laboratory cells, the first modules being manufactured, ultralight cells with record power per gram ratios, and even cells made on fibres.Reviewing the literature, it becomes apparent that more work can be carried out in closing the efficiency gap with glass based counterparts especially at the large-area module level and, in particular, investigating and improving the lifetime of these devices which are built on inherently permeable plastic films. Here we review and provide a perspective on the issues pertaining progress in materials, processes, devices, industrialization and costs of flexible perovskite solar cells. Broader contextFor a number of years, solar cells had been considered as an inferior energy technology due to high cost -even in the renewable energy paradigm; however, more recently progress in materials processing and engineering of highly efficient and stable solar panels have helped them emerge as a frontline renewable energy technology with energy payback time that has been lowered from over a decade to a couple of years (at least in some parts of the world) during the last ten years. Commercial solar panels are typically manufactured on rigid platforms. Fabricating them on flexible substrates, such as transparent plastics and metallic foils, would enable effective harvesting of energy in a number of diverse areas from indoor electronics to automobiles and from building integrated photovoltaics to portable applications. Furthermore, it would open up web-based roll-to-roll fabrication conducive to massive throughputs. Solution processable perovskite solar cells offer promising opportunities towards this end. Being these cells the most efficient among the solution processable ones, with efficiency in their laboratory scale devices on par with the commercially available silicon and thin film counterparts, significant recent efforts devoted to their manufacturing on flexible substrates have seen efficiencies rise as high as 15.6% together with moderate stability. We approach the developments in this area by critically analyzing the factors affecting the final performance indicators such as efficiency, stability, and functionality and relate these to its proces...

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Fatigue degradation and electric recovery in Silicon solar cells embedded in photovoltaic modules

Cited by 86 publications

References 21 publications

A Generalized Electric Model for Mono and Polycrystalline Silicon in the Presence of Cracks and Random Defects

A Generalized Electric Model for Mono and Polycrystalline Silicon in the Presence of Cracks and Random Defects

A power and energy procedure in operating photovoltaic systems to quantify the losses according to the causes

Progress, challenges and perspectives in flexible perovskite solar cells

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