Laser assisted glass frit sealing for production large area DSCs panels

Ivanou, Dzmitry; Santos, Rui M; Maçaira, José; Andrade, Luísa; Mendes, Adélio

doi:10.1016/j.solener.2016.06.043

Cited by 22 publications

(26 citation statements)

References 38 publications

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“…However, the traditionally applied thermopressing method requires high temperatures not applicable with all the DSC materials (Chiang, Chen, & Liu, ; Fakharuddin et al, ). Laser‐assisted glass‐frit sealing demonstrated on single cells and panels circumvents this problem (Ivanou, Santos, Maçaira, Andrade, & Mendes, ; Maçaira, Andrade, & Mendes, ) with good stability results (Maçaira et al, ), which proves that suppressing external aging mechanisms by high‐quality sealing can greatly extend the lifetime. However, the bulky glass substrates are a significant cost‐factor (Fakharuddin et al, ), not to mention that they are not applicable for flexible DSCs.…”

Section: Sealing Of Flexible Dye Solar Cellsmentioning

confidence: 99%

Recent progress in flexible dye solar cells

Miettunen

Vapaavuori

Poskela

et al. 2018

WIREs Energy & Environment

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Flexible dye‐sensitized solar cells are an intriguing photovoltaic technology, especially from the point of view of integration of photovoltaics into everyday objects, owing to these solar cells conforming easily to different nonplanar geometries and low‐intensity lighting conditions. However, the commercialization of these devices has not yet fully taken off due to few persisting gaps in the optimization of employed materials and processes. Herein, we focus on the recent progress on flexible dye sensitized solar cells, and how obstacles to larger‐scale production have been removed. There have been major advancements in diverse roll‐to‐roll compatible preparation methods of various cell layers, as well as in understanding the corrosion of metal electrodes in liquid electrolyte. We also pinpoint the remaining challenges for full commercialization of these technologies, one of which is reaching long‐term stability in which case sealing of the flexible device plays a major role. Furthermore, environmental considerations such as the life cycle assessment and the use of more sustainable materials in solar cell preparation are discussed. This article is categorized under: Energy Research & Innovation > Science and Materials Photovoltaics > Science and Materials

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Section: Sealing Of Flexible Dye Solar Cellsmentioning

confidence: 99%

Recent progress in flexible dye solar cells

Miettunen

Vapaavuori

Poskela

et al. 2018

WIREs Energy & Environment

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“…After Grätzel introduced the DSSC technology, only a handful of reports actually show testing of DSSC outdoors . In general, outdoor testing is quite rare for the third generation photovoltaics, for instance regarding perovskite solar cells only two studies were found and both were quite short (days to weeks) .…”

Section: Introductionmentioning

confidence: 99%

“…Mostly, the DSSC outdoor studies demonstrate manufacturing a module with larger size and its ability to function in power generation, but there are also studies of single cells. The typical aging time scale is several months , but there are also studies where cells have been outdoors for only few days to weeks or much longer tests from one to 2.5 years . Locations of the studies limit on rather narrow longitude range from 21°N to 48°N (Table ) and studies are mostly rather close to sea level with maximum altitude around 300 m. The typical climate conditions are subtropical and mostly sunny, ranging from dry to humid.…”

Section: Introductionmentioning

confidence: 99%

“…Besides tracking the weather conditions, it is important to consider the operational state of the cells. To best reflect the operational conditions as suggested in the ISOS‐O‐3 standard, the cells should be kept in at the maximum power state: eight studies had the cells or panels operating at maximum power point and two of them had another set of cells at open circuit. Many studies also fail to report the operation regime of the tested cell or panel during the test, which is a major deficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies also fail to report the operation regime of the tested cell or panel during the test, which is a major deficiency. On a positive note, IV measurements for the cells or panels are mostly performed regularly and often enough which is a key issue listed also in ISOS standards.…”

Section: Introductionmentioning

confidence: 99%

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Testing dye‐sensitized solar cells in harsh northern outdoor conditions

Lepikko

Miettunen

Poskela

et al. 2018

Energy Science & Engineering

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Here, we report on the behavior of dye solar cells in real‐life weather conditions from a northern outdoor test covering for the first time cell performance measurements in harsh conditions with varying weather from mildly warm conditions to freezing and snowy. The effect of different weather conditions on the cell performance is quantitatively investigated by using correlations coefficients of weather parameters to cell performance. No degradation was observed during the frosty period, but instead during the warmer, rainy periods with high moisture levels. Nevertheless, after 6 weeks of outdoor testing in varying harsh conditions, the cells maintained on average 88% of their initial efficiency. Tracking the cell performance during the aging showed that the test cells generated roughly as much current at subzero temperatures as at warmer temperatures. Investigations of the degradation reactions revealed that while photoelectrode degradation was the main cause of degradation during this test, the loss of charge carriers, which had only a minor effect on performance during the test, would likely become a major degradation factor during the next 1000 h of testing. Furthermore, the test showed that the cells even doubled their efficiency in low light intensity conditions compared with the standard reporting conditions. Thus, the overall conversion efficiency during the whole experiment reached up to 50% higher values compared with the results in standard testing conditions.

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Recent Progress in High-Efficiency Transparent Vacuum Insulation Technologies for Carbon Neutrality

Jung,

Kim,

2024

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Enhancing energy efficiency in buildings is a pivotal strategy for reducing energy consumption and mitigating greenhouse gas emissions. As part of global efforts to achieve carbon neutrality by 2050, there is a heightened focus on improving window insulation because windows are a significant source of thermal loss, representing nearly 40% of a building's heat dissipation. This study explores the development and application of vacuum insulation glazing (VIG), a cutting-edge insulation technology, to substantially reduce heat transfer through windows, thereby contributing to building energy savings. With its superior insulation performance, achieving thermal transmittance levels around 0.5W/m2·K, VIG technology presents a promising advancement over traditional double-glazed or gas-filled insulating glass units (IGUs). However, the adoption of VIG is challenged by economic factors, with costs significantly higher than standard IGUs and triple-glazed windows meeting passive house standards. The production of VIG, characterized by lengthy evacuation times and high processing temperatures, contributes to its elevated price. This research identifies the potential for cost reduction through optimizing manufacturing processes, including using low-melting-point solders for hermetic sealing and localized heating techniques to shorten production times. Despite the high initial cost, the potential for integrating VIG with other smart technologies suggests a promising future for achieving carbon neutrality in buildings. The study calls for further research and standardization in VIG production to overcome current technical and economic barriers, paving the way for its wider adoption and realizing next-generation energy-efficient building materials.

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Laser assisted glass frit sealing for production large area DSCs panels

Cited by 22 publications

References 38 publications

Recent progress in flexible dye solar cells

Recent progress in flexible dye solar cells

Testing dye‐sensitized solar cells in harsh northern outdoor conditions

Recent Progress in High-Efficiency Transparent Vacuum Insulation Technologies for Carbon Neutrality

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