Efficiency improvement of luminescent solar concentrators using upconversion nitrogen-doped graphene quantum dots

Saeidi, Sahar; Rezaei, Behzad; Irannejad, Neda; Ensafi, Ali A.

doi:10.1016/j.jpowsour.2020.228647

Cited by 28 publications

(12 citation statements)

References 32 publications

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“…GQDs doped with other elements, such as nitrogen, have received more attention due to their more easily tunable absorption/emission properties . Saeidi et al improved LSC performance using NGQDs instead of pristine GQDs . An NGQDs-doped LSC was fabricated by infusing NGQDs into poly(methyl methacrylate) (PMMA).…”

Section: Application Of Cqdsmentioning

confidence: 99%

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Carbon-Based Quantum Dots for Photovoltaic Devices: A Review

Kim

Dash

Kumar

et al. 2021

ACS Appl. Electron. Mater.

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Interest in carbon quantum dots (CQDs) has recently boomed due to their potential to enhance the performance of various solar technologies as nontoxic, naturally abundant, and cleanly produced nanomaterials. CQDs and their other variations, such as nitrogen-doped carbon quantum dots (NCQDs) and graphene quantum dots (GQDs), have improved the performance of luminescent solar concentrators (LSCs) and photovoltaic (PV) cells due to their excellent optical properties. As fluorophores in LSCs, CQDs are mostly transparent to visible light and have absorption/re-emission spectra that can be easily controlled. The outstanding optical properties of CQDs make them promising materials to replace expensive, heavy-metal-based fluorophores. Various CQDs have also been used as or doped into the photoanode, counter electrode, hole transport layer (HTL), and electron transport layer (ETL) of dye-sensitized solar cells (DSSCs), organic solar cells (OSC), perovskite solar cells (PSCs), and other PV cell configurations. The addition of CQDs into the various solar cell components has reduced electron recombination, increased charge density, and boosted electron mobility, improving the performance of the PV cells. Enhancing the power conversion efficiency (PCE) of photovoltaic devices is essential in propagating green energy technology. Thus, CQDs offer an affordable, safe, and environmentally friendly method to advance photovoltaic performance.

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Section: Application Of Cqdsmentioning

confidence: 99%

“…120 Saeidi et al improved LSC performance using NGQDs instead of pristine GQDs. 121 An NGQDs-doped LSC was fabricated by infusing NGQDs into poly(methyl methacrylate) (PMMA). The NGQDs absorbed 52% of the solar spectrum with a high PLQY of 65%, significantly higher than bare GQDs.…”

Section: Application Of Cqdsmentioning

confidence: 99%

Carbon-Based Quantum Dots for Photovoltaic Devices: A Review

Kim

Dash

Kumar

et al. 2021

ACS Appl. Electron. Mater.

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“…The next generation smart greenhouse and PV modules would be defined by innovations in carbon allotrope-based materials such as fullerenes (Emmott et al, 2015), carbon nanotubes (CNTs) (Ong et al, 2010;Blackburn, 2017;Celik et al, 2017;Ghalandari et al, 2020), and graphene (Saeidi et al, 2020). The proposal is validated by the limits of Pb-based QDs, which had critical shortcomings owing to surface oxidation, ambient degradation, inadequate stability, and loss of performance.…”

Section: Fullerene-based and Graphene-based Pv Materials For Smart Greenhouse Coversmentioning

confidence: 99%

“…Graphene-based QDs had a photoluminescence (PL) quantum yield of 65% due to a significant reduction in reabsorption losses (Saeidi et al, 2020). Apart from the low reabsorption losses reported by Saeidi et al (2020) synthesized thermotropic hydrogel-graphene oxide molecules with auto-adjust transparency-a desirable characteristic for dual-controlled smart glasses (Chou et al, 2017). The graphene oxide screened sunlight irradiation entering a building and converted photoenergy into thermal energy.…”

Section: Fullerene-based and Graphene-based Pv Materials For Smart Greenhouse Coversmentioning

confidence: 99%

Smart and Solar Greenhouse Covers: Recent Developments and Future Perspectives

et al. 2021

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The examination of recent developments and future perspectives on smart and solar greenhouse covers is significant for commercial agriculture given that traditional greenhouse relied on external energy sources and fossil fuels to facilitate lighting, heating and forced cooling. The aim of this review article was to examine smart and solar materials covering greenhouse. However, the scope was limited to intelligent PhotoVoltaic (PV) systems, optimization of some material properties including smart covers, heat loading and the use of Internet of Things (IoT) to reduce the cost of operating greenhouse. As such, the following thematic areas were expounded in the research; intelligent PV systems, optimization of the Power Conversion Efficiency (PCE), Panel Generator Factor (PGF) and other material properties, heat loading future outlook and perspectives. The intelligent PV section focused on next-generation IoT and Artificial Neural Networks (ANN) systems for greenhouse automation while the optimization of material parameters emphasized quantum dots, semi-transparent organic solar cells, Pb-based and Pb-based PVs and three dimensional (3D) printing. The evaluation translated to better understanding of the future outlook of the energy-independent greenhouse. Greenhouse fitted with transparent PV roofs are a sustainable alternative given that the energy generated was 100% renewable and economical. Conservative estimates further indicated that the replacement of conventional sources of energy with solar would translate to 40–60% energy cost savings. The economic savings were demonstrated by the Levelized cost of energy. A key constraint regarded the limited commercialization of emerging innovations, including transparent and semitransparent PV modules made of Pb-quantum dots, and amorphous tungsten oxide (WO3) films, with desirable electrochromic properties such as reversible color changes. In addition to intelligent energy harvesting, smart IoT-based materials embedded with thermal, humidity, and water sensors improved thermal regulation, frost mitigation and prevention, and the management of pests and disease. In turn, this translated to lower post-harvest losses and better yields and revenues.

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“…Inorganic, shelled QD nanocrystals such as CdSe/CdS core/shell QDs and PbS/CdS core/shell QDs exhibited large Stokes shifts and high photoluminescent quantum yields (PLQYs) [58–61] . Organic QDs such as carbon quantum dots (CQDs) [62–64] and graphene quantum dots (GQDs) [65–68] are promising nanoparticles for their natural abundance, high photostability, and photoconversion capabilities. The doping of QDs with other compounds such as organic dyes such as Coumarin or metals such as Cu has resulted in improved optical efficiencies by reducing reabsorption losses and controlling the frequencies of re‐emitted light [69–75] .…”

Section: Introductionmentioning

confidence: 99%

Review on Colloidal Quantum Dots Luminescent Solar Concentrators

et al. 2021

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Luminescent solar concentrators (LSCs) have recently gained popularity as an effective solution to increase solar energy conversion. Utilizing LSCs together with solar cells can generate more energy at a lower cost than using only solar cells. LSCs operate by utilizing luminophores, molecules that absorb incident solar irradiation and re‐emit photons, and waveguides that redirect emitted photons to the edges of a glass or polymer slab at high concentrations. Many quantum dots (QDs) have been the focus of much research as luminophores for LSCs, owing to their high quantum yields (QYs), controllable absorption/emission spectra, good stability, and ease of synthesis. Various QDs, such as CdSe, PbS, CdS, AgInS2, Si, and C, have been modified to enhance their optical performances in LSCs, often measured by their optical efficiencies, internal/external quantum efficiencies, and power conversion efficiencies. This review appraises the latest developments in colloidal QDs—basic QDs, doped QDs, core/shell QDs, hybrid QDs, and Si‐based QD—for their applications in LSCs. Other factors that enhance an LSC's efficiency, such as altering the polymer matrix and using distributed Bragg reflectors, are discussed. The development of highly efficient, QD‐based LSCs will be essential for increasing solar energy production worldwide.

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Efficiency improvement of luminescent solar concentrators using upconversion nitrogen-doped graphene quantum dots

Cited by 28 publications

References 32 publications

Carbon-Based Quantum Dots for Photovoltaic Devices: A Review

Carbon-Based Quantum Dots for Photovoltaic Devices: A Review

Smart and Solar Greenhouse Covers: Recent Developments and Future Perspectives

Review on Colloidal Quantum Dots Luminescent Solar Concentrators

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