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Nanomaterials | Free Full-Text | Recent Development …
Population growth and the current global weather patterns have heightened the need to optimize solar energy harvesting. Solar-powered water filtration, electricity generation, and water heating have …
Solar energy conversion technologies: principles and …
In 2014 solar energy provided about 1% of the total primary energy which was much less than the share of traditional forms of energy or other sources of renewable energy (see Fig. 2.1).According to the report released by the International Energy Agency (IEA) in 2018, by 2050, the sun will be the largest source of electricity generation in the …
Enhancements of absorption and photothermal conversion of solar energy enabled by surface plasmon resonances in nanoparticles …
The electric field and power dissipation density inside nanoparticles can be used to elucidate mechanisms of absorption efficiency enhancement. Left and right sides of Fig. 4 are the electric field and power dissipation density for (a) C sphere at λ = 400 nm, (b) Au sphere at λ = 537 nm, (c) Au nanoshell at λ = 672 nm, and (d) C-Au core-shell …
High-Efficiency Photothermal Water Evaporation using Broadband Solar Energy Harvesting by Ultrablack Silicon Structures …
Development of broadband absorption materials for solar energy harvesting is an important strategy to address global energy issues. Herein, it is demonstrated that an ultrablack silicon structure with abundant surface texturing can …
Flexible Broadband Absorber for Solar Energy Harvesting
In this work, a multi-material flexible solar absorber composed of regularly arranged Ni cross resonators and Ti nano-cylinders on a polydimethylsiloxane (PDMS) substrate with great flexibility and mechanical properties is proposed. The finite-difference time-domain (FDTD) method is utilized to investigate absorption properties of the flexible …
Scalable selective absorber with quasiperiodic nanostructure for …
The results demonstrate that the absorber possesses an ideal selective solar absorption and a superior low-temperature enhanced solar-thermal conversion …
Study on the solar energy absorption of hybrid solar cells with trapezoid-pyramidal structure based PEDOT…
The optical absorption of the HSCs with TPs is basically above 90% from ~300 nm to ~1300 nm and the average solar energy absorption is 93.8% under AM 1.5 solar spectrum (from 300 nm to 1500 nm). Simultaneously, we have calculated the short-circuit current density (J sc ), open-circuit voltage (V oc ), fill factor (FF), maximum power …
Multi-scale multi-physic coupled investigation on the matching and trade-off of conversion …
Multi-scale multi-physic coupled investigation on the matching and trade-off of conversion and storage of optical, thermal, electrical, and chemical energy in a hybrid system based on a novel full solar spectrum utilization strategy An …
Scientists make crucial breakthrough that could revolutionize solar energy…
Solar panels are one of many clean energy solutions that provide much-needed electrical energy to electrical grids worldwide. Solar panels function by allowing sunlight to shine on specialized receptors known as photovoltaic cells, or PV cells, which in turn transform the energy within the sunlight into an electrical current run through wires …
Hierarchical porous metallic glass with strong broadband absorption and photothermal conversion performance for solar …
1. Introduction With the concept of a green Earth continues to be promoted, renewable green energy has begun to receive tremendous attention. Solar energy as one of the world''s ubiquitous green energy, due to it …
Hierarchical porous metallic glass with strong broadband absorption …
1. Introduction. With the concept of a green Earth continues to be promoted, renewable green energy has begun to receive tremendous attention. Solar energy as one of the world''s ubiquitous green energy, due to it strikes into the earth every day is much greater than the energy consumed by the earth in a year [1], [2], is widely used and …
A Polymer Nanocomposite with Strong Full‐Spectrum Solar Absorption …
1 Introduction. Maintaining a comfortable temperature is a crucial aspect of modern living. [1-3] The society has long had a significant demand for both heating and cooling, which account for over half of the total final energy consumption. []The energy used for heating and cooling buildings constitutes up to 48% of the total energy consumption in …
Experimental comparison of the photothermal conversion performance of coal and plant soot nanofluids for direct absorption solar …
Among the various methods for harnessing solar energy, the photothermal conversion of solar energy is the most straightforward and functional [6], [27]. Solar collectors are key components in solar thermal application systems, and their performance strongly influences the effectiveness of solar thermal utilization [45] .
Solar energy full-spectrum perfect absorption and efficient photo ...
: solar energy, photo-thermal generation, perfect absorption, plasmonic Abstract: Designing and manufacturing cost-effective absorbers that can cover the full-spectrum of solar irradiation is still critically important for solar harvesting.Utilizing control of the lightwave reflection and transmission, metamaterials realize high absorption over a …
Surface Plasmon-Assisted Solar Energy Conversion
LSPR occurs when the oscillation frequency of the electron density and the incident light are in resonance. The oscillation of the surface plasmon causes high absorption and scattering-cross sections, together with great enhancement of the local electromagnetic field near the particle''s surface [].For some metals, including gold and …
Semiconductor-based Multilayer Selective Solar …
Solar thermal energy conversion is of intense interest due to environmentally sustainable applications in industrial heating, air conditioning, and electricity generation 1,2,3,4.For instance ...
Synthesis of hybrid dual-MOF encapsulated phase
1. Introduction. The world''s growing energy demand and reliance on fossil fuels manifested a ramified environmental impact. With an increasing energy demand projection in the future, urgency for the advancement of new renewable energy alternatives and the effective use of present energy technology is imperative [1].Solar energy was …
Review Solar-powered absorption chillers: A comprehensive and critical …
The aim of a solar cooling system is to utilize the solar energy landing on a building for useful space-conditioning for the occupants within. This is widely considered to be a sustainable and environmentally-friendly alternative to conventional air-conditioning systems [5], and, as such, interest in solar air-conditioning has grown steadily over the …
High Solar Energy Absorption and Human Body Radiation …
A large of energy consumption is required for indoor and outdoor personal heating to ameliorate the comfortable and healthy conditions. Main personal thermal management strategy is to reflect mid-infrared human body radiation for human surface temperature (THS) regulation. We demonstrate a visible Janus light absorbent/reflective …
Complementary optical absorption and enhanced solar thermal conversion ...
The percentage of solar energy absorbed by the nanofluids can be represented by the solar weighted absorption fraction, A m, which is given by Drotning [40]: (10) A m = ∫ λ min λ max I (λ) (1 − e − α (λ) l) d λ ∫ λ min λ max I (λ) d λ where I (λ) is the spectral solar irradiance, α (λ) is the absorption coefficient and l is ...
Chip-scale solar thermal electrical power generation
In this paper, we demonstrate a compact, chip-based device that allows for direct storage of solar energy as chemical energy that is released in the form of heat on demand and then converted into electrical energy in a controlled way.
Mesoporous CuO with full spectrum absorption for photothermal conversion in direct absorption solar …
The extinction coefficient (α(λ)) is calculated from the spectral transmittance according to Drotning (Drotning, 1978).(19) T (λ) = exp (-α λ x) where T(λ) is the transmittance of the nanofluid and x represents the optical depth (1.0 cm). It can be seen from Fig. 5 (b) that the extinction coefficient of CuO-MS/water nanofluids is about three …
Solar energy | Definition, Uses, Advantages, & Facts | Britannica
Solar energy | Definition, Uses, Advantages, & Facts
Optical absorption property and photo-thermal conversion performance of graphene oxide/water nanofluids with excellent dispersion …
Note that zeta potential (ζ) has been commonly considered as an important indicator to the dispersion stability of nanofluids (Fedele et al., 2011) order to further elaborate the dispersion stability of the GO nanofluids, their ζ values were measured. As plotted in Fig. 4 a, the absolute ζ values of the GO/water nanofluids at 30 C range from …
Medium
The development of a new generation of solid particle solar receivers (SPSRs) with high solar absorptivity (0.28–2.5 μm) and high infrared emissivity (1–22 μm) is crucial and has attracted much attention for the attainment of the goals of "peak carbon" and "carbon neutrality". To achieve the modulation of infrared emission and solar absorptivity, …