Earth abundant colloidal carbon quantum dots for luminescent solar concentrators

Liu, Guiju; Wang, Xiaohan; Han, Guangting; Yu, Jianyong; Zhao, Hongbin

doi:10.1039/d0ma00181c

Cited by 42 publications

(40 citation statements)

References 151 publications

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“…During last twenty years, there are many methods, which have been reported for the preparation of colloidal C-dots, [26,27] such as hydrothermal/solvothermal synthesis, [28][29][30][31][32] solid-state vacuum heating, [12] microwave-assisted synthesis, [33][34][35][36] and pyrolysis carbonization approach (Figure 1). [37 ] These wet-chemistry methods are very effective for reproducible synthesis of the colloidal C-dots, because they can control the structure and surface functional groups of the C-dots by controlling the types of precursors, reaction temperature and solvents.…”

Section: Synthesis Methods Of Qdsmentioning

confidence: 99%

“…[3] Compared to inorganic quantum dots (QDs), carbon QDs (C-dots) have attracted a lot of attentions due to their unique properties, [4] such as high quantum yield, [5] good photo-and chemical-stability, [6,7] low-cost, [8,9] low-toxicity [10,11] and easy synthesis with earth-abundant precursors. [12] Because of their excellent properties, [13,14] they have been widely used as building blocks for various types of optoelectronic devices, [15] such as luminescent solar concentrators, [16,17] light emitting devices and photoelectrochemical devices. [18][19][20][21][22] For example, Wang et al studied the photocatalytic process of composite materials of C-dots and found that the electron transfer performance of C-dots cannot only improve the catalytic performance of semiconductor photocatalysts, but also improve its stability; [23] Lu et al described the upconversion photoluminescent properties of colloidal C-dots.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Colloidal Carbon Quantum Dots

Zhou¹,

Ren²,

Zhang³

et al. 2021

General Chemistry

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Carbon quantum dots (C-dots) are emerging semiconductor nanomaterials consisting of earth-abundant C, O, and N elements. C-dots have many advantages such as high quantum yield, good photoand chemical-stability, low-cost, low-toxicity and easy synthesis with earth-abundant precursors. In this minireview, we summarized and updated the most recent research works for the synthesis of the fluorescent and phosphorescent C-dots. In the end, we also give our owner views for the challenges and research directions for C-dots.

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Section: Synthesis Methods Of Qdsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Colloidal Carbon Quantum Dots

Zhou¹,

Ren²,

Zhang³

et al. 2021

General Chemistry

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“…[65] In addition, the performance of CDs as luminescent solar concentrators has also attracted a lot of interest. [66] Reports on supramolecular immobilization of CDs on carbon nanotubes [67] and graphene oxide [68] have also demonstrated the occurrence of photoinduced electron-transfer phenomena from the 0D photoexcited CDs to the 1D CNTs and 2D graphene. Interfacing CDs with carbon nanostructures (graphene, nanotubes, etc.)…”

Section: Supramolecular Functionalization Of As-derived Cdsmentioning

confidence: 99%

Interfacing Carbon Dots for Charge‐Transfer Processes

Stergiou

Tagmatarchis

2021

Small

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Carbon dots (CDs) are a booming material and the most recent incomer in the big family of carbon nanostructures. Specifically, CDs are nanosized fluorescent core‐shell nanoparticles with tunable absorption and emission spectra, with high solubility in aqueous media and common organic solvents. Herein, the origins and the development of these unique nanoscale structures are discussed, key synthetic routes are briefly described, and the utilization of CDs in light‐induced charge‐transfer schemes is mainly focused upon. Beyond the impact of the CD's surface on the photoluminescence properties, functionalization, by covalent or supramolecular means, permits controllable incorporation of new functionalities with novel photophysical properties. Furthermore, the dual nature of CDs as electron donating or electron accepting species, unveiled upon interfacing them with organic chromophores, highlights their potentiality in managing diverse charge‐transfer processes. Novel mechanisms, such as symmetry‐breaking photoinduced charge‐transfer can be activated upon covalent functionalization of CDs with organic dyes. Without a doubt, participation of CDs in energy conversion schemes opens up a wide avenue that may lead to the development of novel prototype devices suitable for technological applications and related to photonics and optoelectronics.

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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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Earth abundant colloidal carbon quantum dots for luminescent solar concentrators

Abstract: We reviewed the synthetic strategies, structure and properties of C-dots, and summarized the recent progress of C-dots based luminescent solar concentrators.

Cited by 42 publications

References 151 publications

Synthesis of Colloidal Carbon Quantum Dots

Synthesis of Colloidal Carbon Quantum Dots

Interfacing Carbon Dots for Charge‐Transfer Processes

Review on Colloidal Quantum Dots Luminescent Solar Concentrators

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