Growth and characterization of ammonium nickel-copper sulfate hexahydrate: A new crystal of Tutton's salt family for the application in solar-blind technology

Ghosh, Santunu; Lima, Alessandro Henrique de; Flores, Leonã S.; Pacheco, Tiago S.; Barbosa, Ananias A.; Ullah, Saif; Mendonça, João Paulo Almeida de; Oliveira, Luiz Fernando Cappa de; Quirino, Welber G.

doi:10.1016/j.optmat.2018.09.004

Cited by 25 publications

(5 citation statements)

References 92 publications

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“…Absorption at around 1300, 1600, 2200, and 2700 nm was observed for all the samples, and the one at around 240 nm was observed for Tldoped samples. The spectrum shape of the longer wavelength is similar to that of the NH 4 Cl fine powder in previous reports; therefore, the peaks at around 1300, 1600, 2200, and 2700 nm can be assigned to the combination of N-H stretching and N-H bending (A), the first overtone stretch of N-H bonds (B), the combination of NH 4 + asymmetric stretching and NH 4 + bending (C), and O-H stretching (D), respectively [41][42][43][44]. Compared with the previous report of the Tldoped NH 4 Cl single crystals, the peak at around 240 nm was attributed to the 1 S 0 → 3 P 1 transitions of Tl + [36][37][38].…”

Section: Sample Characterizationmentioning

confidence: 65%

Optically stimulated luminescence properties of Tl-doped NH₄Cl transparent ceramics fabricated by SPS method

Onoda

Kimura

Nakauchi

et al. 2021

Journal of Asian Ceramic Societies

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We fabricated Tl-doped NH 4 Cl transparent ceramics using SPS method with varying Tl concentrations (0%, 0.01%, 0.05%, 0.1%, 0.5%, and 1%) and evaluated the properties of photoluminescence (PL), radioluminescence (RL), and optically stimulated luminescence (OSL). In PL and RL spectra, Tl-doped samples exhibited two emission peaks at around 380 and 530 nm due to the 3 P 1 → 1 S 0 transitions of Tl + and the off-center self-trapped excitons near Tl + , respectively. In the OSL spectra, Tl-doped samples exhibited an emission peak at around 350 nm due to the 3 P 1 → 1 S 0 transitions of Tl + . In the OSL dose-response function, all the samples showed a good linearity over a range of 10-10,000 mGy.

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Section: Sample Characterizationmentioning

confidence: 65%

Optically stimulated luminescence properties of Tl-doped NH₄Cl transparent ceramics fabricated by SPS method

Onoda

Kimura

Nakauchi

et al. 2021

Journal of Asian Ceramic Societies

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“…Plotting (αhν) n versus hν is a direct method for defining the nature of the optical transition. The natures of the direct and indirect allowed transitions can be compared using n = 2 and n = 1 2 , respectively, and n = 3 and n = 3/2 can be used to compare indirect and direct forbidden transitions, respectively [37]. The direct and indirect allowed transitions are explored in Figure 5.…”

Section: Optical Properties Of the Pure Pqds And The Eva-tpr/pqd Comp...mentioning

confidence: 99%

Encapsulated Passivation of Perovskite Quantum Dot (CsPbBr3) Using a Hot-Melt Adhesive (EVA-TPR) for Enhanced Optical Stability and Efficiency

et al. 2021

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The notable photophysical characteristics of perovskite quantum dots (PQDs) (CsPbBr3) are suitable for optoelectronic devices. However, the performance of PQDs is unstable because of their surface defects. One way to address the instability is to passivate PQDs using different organic (polymers, oligomers, and dendrimers) or inorganic (ZnS, PbS) materials. In this study, we performed steady-state spectroscopic investigations to measure the photoluminescence (PL), absorption (A), transmission (T), and reflectance (R) of perovskite quantum dots (CsPbBr3) and ethylene vinyl acetate/terpene phenol (1%) (EVA-TPR (1%), or EVA) copolymer/perovskite composites in thin films with a thickness of 352 ± 5 nm. EVA is highly transparent because of its large band gap; furthermore, it is inexpensive and easy to process. However, the compatibility between PQDs and EVA should be established; therefore, a series of analyses was performed to compute parameters, such as the band gap, the coefficients of absorbance and extinction, the index of refractivity, and the dielectric constant (real and imaginary parts), from the data obtained from the above investigation. Finally, the optical conductivities of the films were studied. All these analyses showed that the EVA/PQDs were more efficient and stable both physically and optically. Hence, EVA/PQDs could become copolymer/perovskite active materials suitable for optoelectronic devices, such as solar cells and perovskite/polymer light-emitting diodes (PPLEDs).

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“…Several mixed Tutton salts, such as K 2 Ni x Co 1−x (SO 4 ) 2 (H 2 O) 6 [28], (NH 4 ) 2 Ni x Co 1−x (SO 4 ) 2 (H 2 O) 6 [15], (NH 4 ) 2 Mn 1−x Zn x (SO 4 ) 2 (H 2 O) 6 [29], K 2 Zn x Mg 1−x (SO 4 ) 2 (H 2 O) 6 [30], and (NH 4 ) 2 Ni x Cu 1−x (SO 4 ) 2 (H 2 O) 6 [31], have been explored as materials for ultraviolet light filters and solar-blind devices. Recently, there has been great interest in thermochemical applications, where materials can store energy in the heat form by heating water [2,3,[32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Novel Mixed Tutton Salts K2Mn0.03Ni0.97(SO4)2(H2O)6 and K2Mn0.18Cu0.82(SO4)2(H2O)6 for Thermochemical Heat Storage Applications: An Experimental–Theoretical Study

de Oliveira Neto,

Viana,

Lima

et al. 2023

Molecules

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In this paper, novel mixed Tutton salts with the chemical formulas K2Mn0.03Ni0.97(SO4)2(H2O)6 and K2Mn0.18Cu0.82(SO4)2(H2O)6 were synthesized and studied as compounds for thermochemical heat storage potential. The crystallographic structures of single crystals were determined by X-ray diffraction. Additionally, a comprehensive computational study, based on density functional theory (DFT) calculations and Hirshfeld surface analysis, was performed to calculate structural, electronic, and thermodynamic properties of the coordination complexes [MII(H2O)6]2+ (MII = Mn, Ni, and Cu), as well as to investigate intermolecular interactions and voids in the framework. The axial compressions relative to octahedral coordination geometry observed in the crystal structures were correlated and elucidated using DFT investigations regarding Jahn–Teller effects arising from complexes with different spin multiplicities. The spatial distributions of the frontier molecular orbital and spin densities, as well as energy gaps, provided further insights into the stability of these complexes. Thermogravimetry, differential thermal analysis, and differential scanning calorimetry techniques were also applied to identify the thermal stability and physicochemical properties of the mixed crystals. Values of dehydration enthalpy and storage energy density per volume were also estimated. The two mixed sulfate hydrates reported here have low dehydration temperatures and high energy densities. Both have promising thermal properties for residential heat storage systems, superior to the Tutton salts previously reported.

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Growth and characterization of ammonium nickel-copper sulfate hexahydrate: A new crystal of Tutton's salt family for the application in solar-blind technology

Cited by 25 publications

References 92 publications

Optically stimulated luminescence properties of Tl-doped NH₄Cl transparent ceramics fabricated by SPS method

Optically stimulated luminescence properties of Tl-doped NH₄Cl transparent ceramics fabricated by SPS method

Encapsulated Passivation of Perovskite Quantum Dot (CsPbBr3) Using a Hot-Melt Adhesive (EVA-TPR) for Enhanced Optical Stability and Efficiency

Assessing the Novel Mixed Tutton Salts K2Mn0.03Ni0.97(SO4)2(H2O)6 and K2Mn0.18Cu0.82(SO4)2(H2O)6 for Thermochemical Heat Storage Applications: An Experimental–Theoretical Study

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Growth and characterization of ammonium nickel-copper sulfate hexahydrate: A new crystal of Tutton's salt family for the application in solar-blind technology

Cited by 25 publications

References 92 publications

Optically stimulated luminescence properties of Tl-doped NH4Cl transparent ceramics fabricated by SPS method

Optically stimulated luminescence properties of Tl-doped NH4Cl transparent ceramics fabricated by SPS method

Encapsulated Passivation of Perovskite Quantum Dot (CsPbBr3) Using a Hot-Melt Adhesive (EVA-TPR) for Enhanced Optical Stability and Efficiency

Assessing the Novel Mixed Tutton Salts K2Mn0.03Ni0.97(SO4)2(H2O)6 and K2Mn0.18Cu0.82(SO4)2(H2O)6 for Thermochemical Heat Storage Applications: An Experimental–Theoretical Study

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Optically stimulated luminescence properties of Tl-doped NH₄Cl transparent ceramics fabricated by SPS method

Optically stimulated luminescence properties of Tl-doped NH₄Cl transparent ceramics fabricated by SPS method