2 天之前· Our innovative metamaterial-based solar absorber, with a total thickness of just 280 nm, demonstrates exceptional thinness. This ultra-thin metamaterial solar selective absorber achieves near-perfect absorption across the visible to near-infrared spectrum, boasting a record-high solar absorption efficiency of 95% and a low thermal emittance of 3.6% at 100°C.
However, the methods to achieve cost-effective light absorbers are still challenging. Here we present a perfect broadband solar absorber for efficient photothermal conversion of sunlight employing a low-cost ultraviolet laser-induced graphene (UV-LIG) prepared on a polymer material using the conventional direct laser writing method.
Sunlight absorbing is considered as the heart of the SSGS. As mentioned, sunlight consists of a wide range of electromagnetic waves with varying wavelengths, covering a small portion of the ultraviolet, full range of visible, and near-infrared regions. Different types of photothermal materials have been used in these systems.
Cellulose dip-coated with carbon black was adopted as the light absorber. The light absorber was wrapped onto cotton core and fixed onto thermal insulator of polystyrene foam, which spatially separated the bulk water and the evaporation surface.
Because of the importance of the light absorber, all absorber types are studied which are graphene, graphite, carbon, carbon nanotube (CNT), carbonized wood, plants, polymers, and plasmonic nanoparticles (NPs). 2. History of solar steam generation
The last category of light absorbers in SSGS which has been recently welcomed by researchers is polymeric one. Polymeric absorbers have high efficiencies and one of the essential features that distinguish them from the previous categories is their high stability and resistance to destruction.
Surprisingly, around 100% absorption of sunlight has been reported ( He et al., 2020a, Xue et al., 2017 ). In addition to the variety absorbers, different architectures have been proposed to enhance the light harvesting, inhibit the heat losses, and desired water managing, giving rise to the WER.
2 · Our innovative metamaterial-based solar absorber, with a total thickness of just 280 nm, demonstrates exceptional thinness. This ultra-thin metamaterial solar selective absorber achieves near-perfect absorption across the visible to near-infrared spectrum, boasting a record-high solar absorption efficiency of 95% and a low thermal emittance of 3.6% at 100°C.
Designing flexible CNT/CNF films with highly light-absorbing for solar energy harvesting: Seawater desalination, photothermal power generation and light- driven actuators Author links open overlay panel Yinan Li a b, Jun Wang a b, Chenglong Fu a b, Liulian Huang a b, Lihui Chen a b, Yonghao Ni c 1, Qinghong Zheng a b 1
The organic solar cells (OSCs) use phase-separated mixtures of various materials in a BHJ architecture in order to absorb light and split the exciton into hole-electron pairs at the interface between the two (or three) materials. They thus fall between limits of crystalline solar-cell materials and photosynthesis. In general an OSC use n-type and p-type layers which …
In this review, we will report the recent progress in solar absorber material design based on various photothermal conversion mechanisms, evaluate the prerequisites in terms of optical, thermal and …
2 · Our innovative metamaterial-based solar absorber, with a total thickness of just 280 nm, demonstrates exceptional thinness. This ultra-thin metamaterial solar selective absorber …
DOI: 10.2139/ssrn.4358206 Corpus ID: 256890337; Designing Flexible Cnt/Cnf Films with Highly Light-Absorbing for Solar Energy Harvesting: Seawater Desalination, Photovoltaic Power Generation and Light- Driven Actuators
In order to develop new high-efficiency photothermal conversion materials, we propose and numerically verify a rectangular layered cavity metasurface (RLCM) for efficient …
A novel all-solid-state, hybrid solar cell based on organic-inorganic metal halide perovskite (CH 3 NH 3 PbX 3) materials has attracted great attention from the researchers all over the world and is considered to be one of the top 10 scientific breakthroughs in 2013.The perovskite materials can be used not only as light-absorbing layer, but also as an electron/hole transport layer due to …
Generally, solar-thermal conversion is a processing technology that converts solar energy into heat by using light-absorbing photothermal materials [13]. Moreover, due to the unpredictability and intermission of solar radiation in time and space, thermal energy storage has been combined with solar-thermal conversion to overcome the gap between supply and …
Here we present a perfect broadband solar absorber for efficient photothermal conversion of sunlight employing a low-cost ultraviolet laser-induced graphene (UV-LIG) prepared on a polymer material using the conventional direct laser writing method.
This paper reviews the progress made in solar power generation by PV technology. ... The semiconductor device that transforms solar light in electrical energy is termed as ''Photovoltaic cell'', and the phenomenon is named as ''Photovoltaic effect''. To size a solar PV array, cells are assembled in form of series-parallel configuration for requisite energy [37], …
The generated Ti 2 O 3 NPs were capable of absorbing 92.5% of incident light over the whole solar spectrum and converted almost 100% of absorbed photon energy into heat, thus making it a brilliant photothermal material for solar energy conversion.
The typical structure of solar steam generators has a photothermal material as the light absorber that plays a vital role in the process. Thus far, different natural and synthetic kinds of materials with the impressive ability of sunlight absorption have been considered for the fabrication of SSGSs.
The alternating layers of dielectrics and metals in the optical microcavity structures can effectively absorb solar energy. Incident light, upon striking the dielectric layer and undergoing refraction, partially transmits to the metal layer for absorption.
CBP-CuO and CBP were used as photothermal materials to absorb and convert solar heat for thermoelectric effect power generation, and the maximum power generation in the thermoelectric effect power generation test reached 57.459 mV and 57.427 mV respectively. The maximum output power of CBP-CuO is 51.7131 mW. CBP-CuO provides a new idea for …
The generated Ti 2 O 3 NPs were capable of absorbing 92.5% of incident light over the whole solar spectrum and converted almost 100% of absorbed photon energy into …
In this review, we will report the recent progress in solar absorber material design based on various photothermal conversion mechanisms, evaluate the prerequisites in terms of optical, thermal and wetting properties for efficient solar-driven water vaporization, classify the systems based on different photothermal evaporation ...
Photothermal materials often prioritize solar absorption while neglecting thermal radiation losses, which diminishes thermal radiation conversion efficiency. This study addresses this gap by introducing a germanium (Ge) subwavelength structure (SWS) designed to optimize both solar absorption and infrared emissivity. Using a self ...
This work focuses on the direct solar steam generation. In this regard, the materials, mechanisms, and structures used for desalinating water through the production of steam by solar energy are reviewed. Because of the importance of the light absorber, all absorber types are studied which are graphene, graphite, carbon, carbon nanotube (CNT ...
The successful application of TPyP in water evaporation and power generation effectively addresses the difficulties faced in the process of using organic small molecule photothermal materials to solve the energy crisis.
Photothermal materials often prioritize solar absorption while neglecting thermal radiation losses, which diminishes thermal radiation conversion efficiency. This study …
A review of major solar photovoltaic technologies comprising of PV power generation, Hybrid PV generation, various light absorbing materials, performance and reliability of PV system, sizing, distribution and control is presented. The different applications of solar PV system such as building integrated system, desalination plant, space, solar ...
This study demonstrates the application of photothermal organic-small-molecules in water evaporation and power generation, therefore offering a valuable prospect of their utilization in solar energy harvesting.
This study demonstrates the application of photothermal organic-small-molecules in water evaporation and power generation, therefore offering a valuable prospect of their utilization in solar energy harvesting.
Here we present a perfect broadband solar absorber for efficient photothermal conversion of sunlight employing a low-cost ultraviolet laser-induced graphene (UV-LIG) prepared on a polymer material using the conventional …
The successful application of TPyP in water evaporation and power generation effectively addresses the difficulties faced in the process of using organic small molecule …
The alternating layers of dielectrics and metals in the optical microcavity structures can effectively absorb solar energy. Incident light, upon striking the dielectric layer and undergoing refraction, partially transmits to the …
In order to develop new high-efficiency photothermal conversion materials, we propose and numerically verify a rectangular layered cavity metasurface (RLCM) for efficient solar light absorption and photo-thermal generation. The RLCM demonstrates near-perfect absorption across an ultra-wide spectral range of 310–4235 nm, with a ...
The most prominent application of halide perovskites is as light-absorbing materials in solar cells. Miyasaka and coworkers first applied halide perovskite materials in dye-sensitized solar cells ...
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