Advanced Glass-Ceramic Nanocomposites for Structural, Photonic, and Optoelectronic Applications

Tarafder, Anal; Molla, Atiar Rahaman; Karmakar, Basudeb

doi:10.1016/b978-0-323-39309-6.00013-4

Cited by 9 publications

(6 citation statements)

References 157 publications

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“…Willemite has potential for green phosphors and laser crystal applications [5,6,7,8,9]. Some other important applications of willemite include the use as adsorbents [10,11], optoelectronics [12,13], as well as in photonic devices [14,15]. …”

Section: Introductionmentioning

confidence: 99%

Effects of Calcination Holding Time on Properties of Wide Band Gap Willemite Semiconductor Nanoparticles by the Polymer Thermal Treatment Method

et al. 2018

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Willemite is a wide band gap semiconductor used in modern day technology for optoelectronics application. In this study, a new simple technique with less energy consumption is proposed. Willemite nanoparticles (NPs) were produced via a water–based solution consisting of a metallic precursor, polyvinylpyrrolidone (PVP), and underwent a calcination process at 900 °C for several holding times between 1–4 h. The FT–IR and Raman spectra indicated the presence of metal oxide bands as well as the effective removal of PVP. The degree of the crystallization and formation of the NPs were determined by XRD. The mean crystallite size of the NPs was between 18.23–27.40 nm. The morphology, particle shape and size distribution were viewed with HR-TEM and FESEM analysis. The willemite NPs aggregate from the smaller to larger particles with an increase in calcination holding time from 1–4 h with the sizes ranging between 19.74–29.71 nm. The energy values obtained from the experimental band gap decreased with increasing the holding time over the range of 5.39 eV at 1 h to at 5.27 at 4 h. These values match well with band gap obtained from the Mott and Davis model for direct transition. The findings in this study are very promising and can justify the use of these novel materials as a potential candidate for green luminescent optoelectronic applications.

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Section: Introductionmentioning

confidence: 99%

Effects of Calcination Holding Time on Properties of Wide Band Gap Willemite Semiconductor Nanoparticles by the Polymer Thermal Treatment Method

et al. 2018

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“…Willemite or zinc silicate (Zn 2 SiO 4 ) belongs to the families of functional inorganic semiconductor materials, and it has been reported to have potentials for phosphors applications [16][17][18]. For example, in photonic devices [19,20], laser crystals [21,22], optoelectronics [23,24], as well as adsorbents [25,26]. Several investigations regarding the synthesis techniques of willemite have been reported by numerous researchers, including the sol-gel technique [27,28], solid-state route [18,[29][30][31], co-precipitation method [32], spray pyrolysis method [33] spray drying method [34], hydrothermal method [35,36], supercritical methods [37,38], solvothermal method [39] and sonochemical method [40].…”

Section: Introductionmentioning

confidence: 99%

Effects of polyvinylpyrrolidone on structural and optical properties of willemite semiconductor nanoparticles by polymer thermal treatment method

Alibe

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et al. 2018

J Therm Anal Calorim

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Willemite is an inorganic semiconductor material used for optoelectronic applications. The present study purposes a new polymer thermal treatment method involving calcination temperature to fabricate the willemite nanoparticles. The effects of polyvinylpyrrolidone (PVP) on the structural and optical properties of the material were thoroughly investigated. Thermogravimetric and its derivative confirmed the decomposition behavior of PVP. The minimum calcination temperature to decompose PVP was appraised at 740°C. The FTIR and the Raman analyses confirmed the presence of organic source before the calcination process and the formation of the crystalline structure of the willemite nanoparticles after the heat treatment. The optimum PVP concentration in this study based on the FTIR results was found to be 40 g L-1. This is the minimum concentration at which the willemite nanoparticles remained pure with homogenous distribution. X-ray diffraction analysis of the PVP samples before calcination was confirmed to be amorphous, and upon calcination between 800 and 1000°C, an a-willemite phase was obtained. The morphology and the average particle size were determined with FESEM and HR-TEM analysis. The average particle size is between 23.8 and 36.7 nm. The optical energy band was found to be increasing from 5.24 to 5.32 eV with the corresponding increase in PVP concentration from 20 to 50 g L-1. The findings in this study provides a new pathway to understand the effects of PVP concentrations on the structural and optical properties of willemite semiconductor nanoparticles as it may have key potential applications for future optoelectronic devices.

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“…Similarly, stimulation of ceramicphase with ionic metal-matrix precedes for a boosted electrical conductivity with improved electrode-electrolyte inter-facial stability, where the properties [(chemistry/size/volume) / (annealing/physical/chemical-matrix/reactivity/temperature)] basically depend upon the ceramic-phase and the metal/non-metal complexes [76]. Another versatile group with its own valuable application, and whose preferred characteristics could be modulated by varying the chemical composition/processing parameters are glass Cer_NC material [77]. This group with oxyhalides/halides (PbF/LaF/LaCl/BaF/BaCl) are glass Cer_NCs, that are found to be incorporated by doping procedures with the rare-earths (RE 3+ ) to improve NC's mechanical-rigidity/chemical-durability with increased up-conversion efficacy [78].…”

Section: Metal-ceramics (Mcs) / Non-metallic-ceramics (Nmcs) Based Ncsmentioning

confidence: 99%

Nanocomposites and their Applications

Sreevidya¹

2023

Applications of Emerging Nanomaterials and Nanotechnology

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The trends in the current developments for utilising the available natural resources as bio-renewable/sustainable supplies have captured the attention of scientists/industrialists in the recent past. The unlimited alarms that are interrelated with the health and environment due to the exhaustive piling up of unwanted and discarded stocks and the damages caused, are indirectly interwound with the foreseeable reduction of fossil/mineral wealth. The bio-renewable/sustainable supplies are hence, opted as platforms for reinforcement in a wide array of applicable functions. Developmental innovations leading to new approaches and perfect tools, as nano-composites through green bio-renewable/sustainable/bio-degradable supplies, submit for note-worthy advantages and are found to be associated with exceptional attributes such as rapid and cost-effective fabrication, with better thermal/mechanical stability, besides easy portability/reusability. It would be worthy mentioning that nano-composites from structured bio-degradable resources find their utility in a broad spectrum of fragments such as food preservation/packaging, agriculture/bio-sensors, bio-medical, optical/energy-storage, water-treatment/marine, automotive/automation, construction, flame-retardant/coating, and many more. Here in this chapter, we comprehensively compare the recent advancement/development of varied applications of nano-composites from bio-renewable/non-bio-renewable reserves. In conclusion, the solutions to the debatable question, and the potential developmental break-ups with new-openings for the naturally agglomerated nano-composites are reflected briefly.

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Advanced Glass-Ceramic Nanocomposites for Structural, Photonic, and Optoelectronic Applications

Cited by 9 publications

References 157 publications

Effects of Calcination Holding Time on Properties of Wide Band Gap Willemite Semiconductor Nanoparticles by the Polymer Thermal Treatment Method

Effects of Calcination Holding Time on Properties of Wide Band Gap Willemite Semiconductor Nanoparticles by the Polymer Thermal Treatment Method

Effects of polyvinylpyrrolidone on structural and optical properties of willemite semiconductor nanoparticles by polymer thermal treatment method

Nanocomposites and their Applications

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