High-loading of organosilane-grafted carbon dots in high-performance luminescent solar concentrators with ultrahigh transparency

Nano Energy, Journal Year: 2023, Volume and Issue: 115, P. 108674 - 108674

Published: July 10, 2023

Carbon dots (CDs) generally suffer from aggregation-induced fluorescence quenching effect in solid-state, which significantly limits their application photoelectric devices. Due to this effect, it is a great challenge achieve high-transparency and high-performance luminescent solar concentrators (LSCs) based on CDs. Here, the synthesis of organosilane-grafted carbon (Si-CDs) rationally designed by hydrothermal method using anhydrous citric acid, ethanolamine KH-792 as reaction precursors. The obtained Si-CDs can be uniformly dispersed polyvinyl alcohol (PVA) matrix through dehydration condensation hydrogen bonding between silicon hydroxyl group PVA. Based property, Si-CDs/PVA thin-film LSCs (5 × 5 0.2 cm3) with ultrahigh CD loading (25 wt%) high transparency fabricated, exhibiting excellent absorption UV spectral region about 90% transmission visible range. Furthermore, power conversion efficiency (PCE) reach 2.09% under standard light shows stability even over 12 weeks. This synthetic design expected beneficial for future development paves way CDs-based

Language: Английский

---

Highly efficient and high color rendering index multilayer luminescent solar concentrators based on colloidal carbon quantum dots

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 481, P. 148441 - 148441

Published: Dec. 31, 2023

Language: Английский

---

Certification Grade Quantum Dot Luminescent Solar Concentrator Glazing with Optical Wireless Communication Capability for Connected Sustainable Architecture

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(16)

Published: Feb. 8, 2024

Abstract Energy sustainability and interconnectivity are the two main pillars on which cutting‐edge architecture is based require realization of energy intelligent devices that can be fully integrated into buildings, capable meeting stringent regulatory requirements operating in real‐world conditions. Luminescent solar concentrators, particularly those near‐infrared emitting reabsorption‐free quantum dots, considered good candidates for semi‐transparent photovoltaic glazing, but despite important advances optical property engineering strategies, studies finished suitable operation still lacking. In this paper, first example a assembled dot luminescent concentrator‐based glazing demonstrated meets all international standards building elements. It also shown these functioning as efficient Visible Light Communication (VLC) receivers even under full sunlight, thus combining wireless connectivity functions realistic solution smart, sustainable buildings.

Language: Английский

---

Luminescent Solar Concentrator with Advanced Structure for Reabsorption Loss Suppression and Synergistic Energy Harvesting

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(36)

Published: March 3, 2024

Abstract As large‐area and optically transparent photon harvesting devices, luminescent solar concentrators (LSCs) are promising candidates for building‐integrated photovoltaics owing to their high transmittance resistance shadowing effects existing in cells. Up now, there still many challenges the practical application of LSCs: 1) Reabsorption loss is inevitable during photoluminescence transmission due indirect illumination cells LSC system. 2) Satisfactory energy cannot be achieved rainy conditions substantial attenuation incident light intensity. 3) Evaporation residue on surface LSCs leads device performance degradation. Pioneering researches feasible strategies reabsorption suppression, days as well self‐cleaning property lacking demonstration. In this work, suppressed based advanced structural with universally applicable optical spacer layer. Then integrated droplet‐based electricity generator (DEG) proposed first time. Such DEG‐LSCs not only realize synergistic raindrop energy, but also possess properties. Finally, a self‐powered temperature humidity sensing system designed demonstrated provide ideas intelligent buildings.

Language: Английский

---

Efficient luminescent solar concentrators based on solvent polarity induced multiple-colored carbon dots

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 774 - 782

Published: Jan. 22, 2025

Language: Английский

---

Perovskite Nanocrystals: Opportunities in Luminescent Solar Concentrators

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(40)

Published: June 28, 2024

Abstract Luminescent solar concentrators (LSCs) are complementary sunlight collectors for photovoltaics (PVs). Emissive fluorophores embedded in a transparent waveguide collect radiation over large area and convert it into luminescence directed to the PV cells that frame waveguide's edges. Among various fluorophores, perovskite nanocrystals (PNCs) show considerable potential LSCs thanks their wide size/composition/shape tunable broad absorption spectrum ranging from UV near‐infrared, which significantly overlaps with spectrum. They also feature high brightness photoluminescence quantum yield of up 100% ease fabrication through wet chemistry approaches. In addition, PNCs can be engineered minimize absorption/emission overlap, is key suppressing energy losses caused by reabsorption. Here, structure properties then correlate them LSC performance presented. The synthesis using wet‐chemistry approaches summarize latest developments PNCs‐based LSCs, categorized engineering strategies design configurations critically reviewed. Finally, described major challenges perspectives future work, outlining rational design, synthesis, PNC loading, surface engineering, machine‐learning‐based tuning PNC‐LSC.

Language: Английский

---

Transparent and colour-neutral luminescent solar concentrators using bright Eu³⁺ supramolecular cages towards photovoltaic windows

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(34), P. 22516 - 22527

Published: Jan. 1, 2024

Colourless luminescent solar concentrators based on highly efficient Eu 3+ luminophores are reported as potential building integrated photovoltaic materials endowed with market-level aesthetic quality and remarkable UV blocking properties.

Language: Английский

---

Luminescent Solar Concentrators with Dual Functions of Photovoltaic and Piezoelectric Properties for Wireless Self‐Powered Speed Measurement

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(35)

Published: July 26, 2023

Abstract The solar‐only response nature limits the luminescent solar concentrators (LSCs) to harvesting rather than responding other stimuli, which restricts role of LSCs energy supply in self‐powered internet things (IoT) systems, and application potential devices has been seriously overlooked. In this work, with photovoltaic piezoelectric features are proposed for first time, extending scenario sensors pressure responsiveness. layer perovskite‐polymer composite film is prepared via situ blade coating polymer matrix poly(vinylidenefluoride‐trifluoroethylene) (P(VDF‐TrFE)). P(VDF‐TrFE) possesses stronger DMF adsorption capacity higher electroactive phase content a conventional poly(vinylidene fluoride) (PVDF), not only reduces residual‐solvent‐induced defects perovskite luminophores, but also brings sensitive LSCs. dual‐functional achieve power conversion efficiency 1.01% output voltage 0.95 V can be obtained even at low 0.16 kPa. A speed measurement system demonstrated, actual carried out. Such show great electrical devices, applied low‐energy‐consumption IoT systems commercial smart home products.

Language: Английский

---

Environmental Effects on the Performance of Quantum Dot Luminescent Solar Concentrators

ACS Photonics, Journal Year: 2023, Volume and Issue: 10(8), P. 2987 - 2993

Published: July 28, 2023

Luminescent solar concentrators (LSCs) are all-photonic, semitransparent devices with great potential in the emerging fields of building-integrated photovoltaics and agrivoltaics. Over past decade, particularly advent quantum dot (QD) LSCs, tremendous progress has been made terms photovoltaic efficiency device size by increasing spectral coverage suppressing reabsorption losses. Despite these advances LSC design, effects environmental conditions such as rain, dust, dirt deposits, which ubiquitous both urban agricultural environments, on performance have largely overlooked. Here, we address issues systematically investigating harvesting waveguiding capability state-of-the-art QD-LSCs, namely, presence airborne pollutants (dust), water droplets, dried deposits. Our results show that dust is unexpectedly insignificant for concentrated luminescence only reduces through a shadowing effect when deposited outer surface, while accumulation inner side increases output power due to backscattering transmitted sunlight. Water other hand, do not dim incident sunlight, but detrimental forming an optical interface LSC. Finally, mimic evaporation residues heavy rain or humidity, worst all, combining shading waveguide These relevant design application-specific surface functionalization/protection strategies real modules.

Language: Английский

---

Engineering the Optical Properties of Eco‐Friendly CuGaS₂/ZnS and CuGaInS₂/ZnS Core/Shell Quantum Dots for High‐Performance Tandem Luminescent Solar Concentrators

Solar RRL, Journal Year: 2023, Volume and Issue: 7(22)

Published: Sept. 17, 2023

Herein, highly luminescent eco‐friendly CuGaS 2 /ZnS (CGS/ZnS) and CuGaInS (CGIS/ZnS) core/shell quantum dots (QDs) are rationally prepared for solar concentrator (LSC) application. It is demonstrated that the optical properties of these QDs can be tailored by engineering ZnS shell thickness, leading to large Stokes shifts high‐photoluminescence yields up 94.6%. As‐synthesized with optimized employed fabricate LSCs (5 × 5 0.5 cm 3 ) using glasses as waveguides, wherein individual CGS/ZnS CGIS/ZnS QD‐based LSCs, respectively, exhibit an efficiency ( η opt ≈3.26% 6.53% under AM1.5G illumination (100 mW −2 ). Remarkably, a tandem QDs‐LSC integrated via vertical stacking top yellow‐emitting bottom red‐emitting delivers high 9.94%, which is, ≈3 1.5 times higher than QDs‐LSCs comparable various best‐reported QDs‐LSCs. The results indicate environment‐benign I–III–VI engineered LSC architectural design promising develop future cost‐effective high‐performing building‐integrated photovoltaics.

Language: Английский

---