Rapid Charging of Thermal Energy Storage Materials through Plasmonic Heating

Wang, Zhongyong; Tao, Peng; Liu, Yang; Xu, Hao; Ye, Qinxian; Hu, Hang; Song, Chengyi; Chen, Zhaoping; Shang, Wen; Deng, Tao

doi:10.1038/srep06246

Cited by 69 publications

(37 citation statements)

References 50 publications

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“…The absorption spectra of MoS 2 and g‐C 3 N 4 hybrids exhibit the combination of both nanosheets. The linear decrease of the characteristic absorption of MoS 2 nanosheets at 672 nm and the linear increase of the characteristic absorption of g‐C 3 N 4 nanosheets at 308 nm with the amount of g‐C 3 N 4 in the hybrids imply that the nanosheets were homogeneously mixed without aggregation, as shown in Figure d.…”

Section: Resultsmentioning

confidence: 93%

2D Organic–Inorganic Hybrid Thin Films for Flexible UV–Visible Photodetectors

Velusamy

Haque

Parida

et al. 2017

Adv Funct Materials

137

106

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as hybridization of MoS 2 with quantum dots and heterostructures with other 2D materials to suppress the dark current and enhance the broad spectral range in the NIR region were attempted. While convenient, these approaches are not scalable for large-scale implementation due to the complicated procedures as well as expensive material and instrument-related costs. [17][18][19] To overcome the aforementioned issues, a promising approach is to create multifunctional hybrid photodetectors by simple solution mixing of MoS 2 with other 2D materials. The different band gaps and dark currents of 2D materials and the low-cost solution process offers a convenient route to engineering and controlling the photodetection properties. [20][21][22] In addition, the arrays of hybrid photodetectors fabricated on flexible substrates, such as plastic and paper, would be beneficial for future wearable applications. [23,24] Recently, 2D organic semiconductors, such as graphitic carbon nitride (g-C 3 N 4 ), have emerged as promising UV-and visible-light-active photocatalysts in the arena of solar energy conversion and environmental applications. [25][26][27][28] Their unique electrical and optical properties, wide band gap (≈2.7 eV), stability in ambient conditions, and low dark current make them attractive for UV light photodetection, but very little work has been carried out so far. Compared to other 2D materials, by considering its merits, g-C 3 N 4 is a promising candidate for hybridizing with MoS 2 because not only does it suppress the dark current of MoS 2 , but also allows hybrid broadband photodetection from UV to visible region. In addition, the crystal lattice matching [29,30] and the ultrafast charge transfer between MoS 2 and g-C 3 N 4 at the interface may lead to efficient separation of photogenerated carriers, as predicted by a recent computational study. [31] Herein we report, to the best of our knowledge for the first time, mechanically flexible 2D organic-inorganic hybrid thin film photodetectors consisting of inorganic MoS 2 and organic g-C 3 N 4 nanosheets for broadband photodetection. Simple but robust solution mixing of MoS 2 and g-C 3 N 4 offers an extremely convenient route to controlling their composition in the hybrid films and thus allows for tuning the optoelectronic properties. Hybrid thin films with 5:5 ratio of MoS 2 and g-C 3 N 4 (henceforth denoted as 5:5 hybrid films) exhibited excellent photodetection performance in terms of ON/OFF photocurrent ratio, specific detectivity, responsivity, and response time upon both Flexible 2D inorganic MoS 2 and organic g-C 3 N 4 hybrid thin film photodetectors with tunable composition and photodetection properties are developed using simple solution processing. The hybrid films fabricated on paper substrate show broadband photodetection suitable for both UV and visible light with good responsivity, detectivity, and reliable and rapid photoswitching characteristics comparable to monolayer devices. This excellent performance is retained even after the films are severely...

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Section: Resultsmentioning

confidence: 93%

2D Organic–Inorganic Hybrid Thin Films for Flexible UV–Visible Photodetectors

Velusamy

Haque

Parida

et al. 2017

Adv Funct Materials

137

106

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“…In the pursuit of improved technologies for energy harvesting [1][2][3][4], communication systems [5,6], and sub-wavelength imaging [7,8], among many others [9][10][11][12] the field of plasmonics is one which holds a great deal of promise. This is a result of the means by which the energy of incident light may be efficiently coupled to the free electrons at a metal/dielectric interface.…”

Section: Introductionmentioning

confidence: 99%

Multiphase strontium molybdate thin films for plasmonic local heating applications

Wells¹,

Zou²,

Mihai³

et al. 2018

Opt. Mater. Express

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In the search for alternative plasmonic materials SrMoO3 has recently been identified as possessing a number of desirable optical properties. Owing to the requirement for many plasmonic devices to operate at elevated temperatures however, it is essential to characterize the degradation of these properties upon heating. Here, SrMoO3 thin films are annealed in air at temperatures ranging from 75 -500° C. Characterizations by AFM, XRD, and spectroscopic ellipsometry after each anneal identify a loss of metallic behaviour after annealing at 500° C, together with the underlying mechanism. Moreover, it is shown that by annealing the films in nitrogen following deposition, an additional crystalline phase of SrMoO4 is induced at the film surface, which suppresses oxidation at elevated temperatures. ExperimentalThe SrMoO3 PLD target material was prepared from SrMoO4 powder (99.9% purity) supplied by Alfa Aesar. The powder was placed in propan-2-ol and ball milled at 300 rpm for 20 hrs before evaporating the propan-2-ol by placing the powder in an oven overnight at 60° C. The powder was then reduced in a furnace under 100 mL min -1 gas flow of 5% H2 / 95% N2 at 1400° C for 10 hrs. The powder was then pressed into a target with a density of approximately 4 g cm -3 before sintering under the same gas flow conditions at 1500° C for 12 hours.The SrMoO3 target material was rotated throughout each pulsed laser deposition process and held 60 mm from the SrTiO3 substrate. A KrF excimer laser (240 nm) was used for the deposition of all samples with a repetition rate of 8 Hz and a 10 s relaxation period after every 20 pulses. A laser fluency of 1.2 J cm -2 was used. Vacuum conditions, approximately 1×10 -7 Torr, were used for the deposition of all samples and the substrate temperature was 650° C. The samples were cooled to room temperature after each deposition process at a rate of 10° C min -1 , either in vacuum or following annealing in 500 Torr N2 (6N purity, supplied by BOC), prior to removal from the vacuum chamber. Single side polished 5x5 mm (100) oriented STO substrates with a thickness of 0.5 mm were used.An IONTOF ToF-SIMS 5 instrument was used for SIMS depth profiling of the samples. An area of 100x100 μm 2 was analysed using a 25 keV Bi+ LMIG in high current bunch mode with a beam current of approximately 1 pA. Only negative secondary ions were collected. For depth profiling, a 1 keV Cs+ ion beam with a current of 75 nA was used, giving a sputter crater area of 300x300 μm 2 .The surfaces of the SMO films before and after annealing were characterised using X-ray photoelectron spectroscopy (XPS). The spectra were recorded on a Thermo Scientific K-Alpha+ spectrometer operating at a base pressure of 2x10 -9 mbar. This system incorporates a monochromated, microfocused Al Kα X-ray source (hν = 1486.6 eV) and a 180° double focusing hemispherical analyser with a 2D detector. The X-ray source was operated a 6 mA emission current and 12 kV anode bias. Data were collected at pass energies of 200 eV for survey, and 20 eV for core le...

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“…Based on the chemical composition, PCMs can be grouped into two categories, namely organic and inorganic ones 1 . Compared to inorganic PCMs, such as salt hydrates and their mixtures, organic PCMs possess numerous advantages of low-price, small corrosion, having no phenomenon of phase separation and undercooling 7 8 9 . Among various organic PCMs, polyethylene glycol (PEG) is the most promising one due to its suitable phase change temperature and high latent heat storage capacity, which can be tuned through varying molecular weight.…”

mentioning

confidence: 99%

Enhanced thermal properties of novel shape-stabilized PEG composite phase change materials with radial mesoporous silica sphere for thermal energy storage

Min

Fang

Huang

et al. 2015

Sci Rep

214

119

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Radial mesoporous silica (RMS) sphere was tailor-made for further applications in producing shape-stabilized composite phase change materials (ss-CPCMs) through a facile self-assembly process using CTAB as the main template and TEOS as SiO2 precursor. Novel ss-CPCMs composed of polyethylene glycol (PEG) and RMS were prepared through vacuum impregnating method. Various techniques were employed to characterize the structural and thermal properties of the ss-CPCMs. The DSC results indicated that the PEG/RMS ss-CPCM was a promising candidate for building thermal energy storage applications due to its large latent heat, suitable phase change temperature, good thermal reliability, as well as the excellent chemical compatibility and thermal stability. Importantly, the possible formation mechanisms of both RMS sphere and PEG/RMS composite have also been proposed. The results also indicated that the properties of the PEG/RMS ss-CPCMs are influenced by the adsorption limitation of the PEG molecule from RMS sphere with mesoporous structure and the effect of RMS, as the impurities, on the perfect crystallization of PEG.

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Rapid Charging of Thermal Energy Storage Materials through Plasmonic Heating

Cited by 69 publications

References 50 publications

2D Organic–Inorganic Hybrid Thin Films for Flexible UV–Visible Photodetectors

2D Organic–Inorganic Hybrid Thin Films for Flexible UV–Visible Photodetectors

Multiphase strontium molybdate thin films for plasmonic local heating applications

Enhanced thermal properties of novel shape-stabilized PEG composite phase change materials with radial mesoporous silica sphere for thermal energy storage

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