Highly efficient multifunctional frosted luminescent solar concentrators with zero-energy nightscape lighting

Zhang, Yi; Zheng, Zida; Cao, Xiudong; Gu, Gangwei; Gan, Zhixing; Huang, Rui; Guo, Yanqing; Hou, Dan; Zhang, Xiaowei

doi:10.1039/d2ta05128a

Cited by 11 publications

(2 citation statements)

References 45 publications

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“…Extending the function of the luminescent layer is a feasible strategy to break the application limits of LSCs in selfpowered devices, which means introducing additional stimulus feedback to the original solar-only response nature, thus achieving multifunctional LSCs for multitasking purposes in self-powered IoT systems. However, it is rarely reported for the multifunctional LSCs during the 40 years that LSCs have been proposed, [6][7][8][9][10] and the most attention is focused on improving the photovoltaic performance of LSCs. [11][12][13][14][15][16][17] Although some practical applications based on LSCs have been reported in recent years, for example, the LSCs greenhouse, [18] hydrogen generation, [19] and the noise barrier panels, [20] the LSCs in these reported works are not compact devices, that is, the luminescent layer only undertakes the photoluminescence (PL) process, while the preparation and application of multifunctional LSCs still lack demonstration.…”

Section: Introductionmentioning

confidence: 99%

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

Xia

Sun

Zhou

et al. 2023

Advanced Energy Materials

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

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Section: Introductionmentioning

confidence: 99%

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

Xia

Sun

Zhou

et al. 2023

Advanced Energy Materials

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“…In contrast to reabsorption and re-emission, which can be directly evaluated by the measurable PLQY and absorption coefficient, the scattering coefficient, which is a measure of the ability of scattering, cannot be directly measured. Although the approach used to estimate the Rayleigh scattering coefficient of the LSC has been reported, , the method for estimating the Mie scattering coefficient of the LSC is rarely reported, despite the fact that it has an important impact on the LSC performance, − especially when the sizes of fluorophores are close to the wavelength of the light. It is still challenging to characterize the Mie scattering due to the following reasons.…”

Section: Introductionmentioning

confidence: 99%

Quantifying Mie Scattering in Luminescent Solar Concentrators for Improved Performance

et al. 2023

Self Cite

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Luminescent solar concentrators (LSCs) are waveguiding devices that collect solar light to supplement photovoltaic devices. Scattering in waveguides is critical to the LSC performance, but it is challenging to quantify its contribution, severely hindering the development of LSCs. In this work, we developed an analytical approach to quantify the Mie scattering coefficient (αs) and anisotropy factor (g) in LSCs. By using the αs and g, we conduct theoretical calculation and Monte Carlo ray-tracing simulation to estimate the optical properties and optical efficiency of LSCs based on Gd1.5Y1.5Al5O12:Ce3+ phosphors. In all cases, both the calculated and simulated results agree well with the experimental observations, evidencing the feasibility of this approach. According to our model, scattering in the waveguide improves LSC performance by rerouting incident photons propagation to the edges but degrades LSC performance by redirecting radiated photons into the escape cone. We demonstrate that the enhancement of scattering increases both the scattering gain and loss as well as improves the absorption of LSCs. Finally, an external quantum efficiency (η ext) of 4.2% for a 20 × 20 cm2 LSC is achieved by optimizing the scattering. This work provides quantitative guidelines for estimating the scattering in LSCs, which will guide future research on LSC designs.

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

Xia,

Sun,

Guo

et al. 2024

Adv Funct Materials

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

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Highly efficient multifunctional frosted luminescent solar concentrators with zero-energy nightscape lighting

Abstract: Luminescent solar concentrators (LSCs) are receiving increasing attention as photovoltaic (PV) modules to replace glass for seamless integration into the urban architectural landscape. The glass facades exhibiting different transparencies are...

Cited by 11 publications

References 45 publications

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

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

Quantifying Mie Scattering in Luminescent Solar Concentrators for Improved Performance

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

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