Comprehensive study on compositional dependence of optical band gap in zinc soda lime silica glass system for optoelectronic applications

Zaid, Mohd Hafiz Mohd; Sidek, H.A.A.; Kamari, Halimah Mohamed; Wahab, Zaidan Abdul; Effendy, Nuraidayani; Alibe, Ibrahim Mustapha

doi:10.1016/j.jnoncrysol.2016.07.020

Cited by 46 publications

(12 citation statements)

References 23 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%

“…This involved a lengthy reaction period by allowing the precursor to get evaporated naturally in the air for two or three months and later calcined at 950 °C for 2 h [34]. The solid state method when compared to other techniques like the sol gel often employs higher calcination temperature ranging between 1000–1500 °C [12,20,21]. This technique was reported by Diao et al [35] where willemite NPs were produced at a temperature between 900–1300 °C and obtained particle size greater than 200 nm.…”

Section: Introductionmentioning

confidence: 99%

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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%

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

Матори

Sidek

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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“…Among the most widely studied inorganic semiconductors for optoelectronics application, silicate based materials are well-thought-out for their outstanding features or characteristics, for example, good physical and chemical stability, great thermal stability, water resistance ability, and excellent mechanical properties [ 8 , 9 , 10 ]. In this light, a specific interest has been developed for the production of zinc silicates [ 11 , 12 , 13 , 14 ]. Zinc silicate or willemite (Zn 2 SiO 4 ) as often called is one of the famous silicate-based luminescent materials that was discovered over two centuries ago occurring freely in nature in association and or with minor ores of zinc minerals.…”

Section: Introductionmentioning

confidence: 99%

Polymer Thermal Treatment Production of Cerium Doped Willemite Nanoparticles: An Analysis of Structure, Energy Band Gap and Luminescence Properties

Alibe

Матори

Nasir³

et al. 2021

Materials

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The contemporary market needs for enhanced solid–state lighting devices has led to an increased demand for the production of willemite based phosphors using low-cost techniques. In this study, Ce3+ doped willemite nanoparticles were fabricated using polymer thermal treatment method. The special effects of the calcination temperatures and the dopant concentration on the structural and optical properties of the material were thoroughly studied. The XRD analysis of the samples treated at 900 °C revealed the development and or materialization of the willemite phase. The increase in the dopant concentration causes an expansion of the lattice owing to the replacement of larger Ce3+ ions for smaller Zn2+ ions. Based on the FESEM and TEM micrographs, the nanoparticles size increases with the increase in the cerium ions. The mean particles sizes were estimated to be 23.61 nm at 1 mol% to 34.02 nm at 5 mol% of the cerium dopant. The optical band gap energy of the doped samples formed at 900 °C decreased precisely by 0.21 eV (i.e., 5.21 to 5.00 eV). The PL analysis of the doped samples exhibits a strong emission at 400 nm which is ascribed to the transition of an electron from localized Ce2f state to the valence band of O2p. The energy level of the Ce3+ ions affects the willemite crystal lattice, thus causing a decrease in the intensity of the green emission at 530 nm and the blue emission at 485 nm. The wide optical band gap energy of the willemite produced is expected to pave the way for exciting innovations in solid–state lighting applications.

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Comprehensive study on compositional dependence of optical band gap in zinc soda lime silica glass system for optoelectronic applications

Cited by 46 publications

References 23 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

Polymer Thermal Treatment Production of Cerium Doped Willemite Nanoparticles: An Analysis of Structure, Energy Band Gap and Luminescence Properties

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