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Peresh, E. Yu.; Zubaka, O. V.; Kun, S. V.; Galagovets, I. V.; Barchii, I. E.; Sabov, M. Yu.

doi:10.1023/a:1017903902945

Cited by 10 publications

(5 citation statements)

References 3 publications

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“…The compounds TeBr 4 and TeI 4 were obtained by the methods previously developed in our laboratory [1]. The obtained binary halides were purified by directional solidification of their melts (TlBr and TlI) and by vacuum sublimation (TeBr 4 and TeI 4 ).…”

Section: Methodsmentioning

confidence: 99%

“…This work is a part of our systematic physico-chemical investigation of the quasibinary halide systems AX-BX 4 (where A: K, Rb, Cs, Tl; B: Se, Te; X: Br, I) [1][2][3]. Most of the aforementioned quasibinary systems are characterized by the formation of A 2 BX 6 intermediate phases that melt congruently and have interesting optical and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

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X-ray powder diffraction studies of Tl2TeBr6 and Tl2TeI6

Sidey

Zubaka

Solomon

et al. 2004

Journal of Alloys and Compounds

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

X-ray powder diffraction studies of Tl2TeBr6 and Tl2TeI6

Sidey

Zubaka

Solomon

et al. 2004

Journal of Alloys and Compounds

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“…The band gap (E g ) values in table 3 follow the order as E g (WC-GGA) <E g (EV-GGA) <E g (MBJ). However, E g values through EV-GGA are in close resemblance with experimental values [26]. Therefore, we will use these values for calculation of optical and thermoelectric properties.…”

Section: Electronic Propertiesmentioning

confidence: 72%

“…These compounds were extensively studied for structural properties at experimental and theoretical sides [21][22][23][24][25]. Peresh et al [26] calculated band gap of Rb 2 TeBr 6 and Cs 2 TeBr 6 as 2.14 and 2.12 eV from their experiments. Dotsenko et al [27] reported the electronic structure of Rb 2 TeBr 6 in ground and first excited states.…”

Section: Introductionmentioning

confidence: 99%

Study of optoelectronic and thermoelectric properties of double perovskites for renewable energy

et al. 2021

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It is compulsory to develop technologies able to generate energy at negligible cost to the environment. Therefore, in present work, lead free vacancy ordered double perovskites M 2 TeBr 6 (M=Rb, Cs) were reported as green energy materials on basis of full potential linearized augmented plane wave method calculations. The study has been carried out in terms of structural, mechanical, electronic, optical, and thermoelectric properties. It was noted from values of tolerance factor and formation energy that both the M 2 TeBr 6 compounds are stable in perovskite structure. The band gaps were calculated as indirect of values 2.09 eV for Rb 2 TeBr 6 and 2.10 eV for Cs 2 TeBr 6 with EV-GGA. These gaps were found in close resemblance with experimental results. The optical properties such as real and imaginary parts of dielectric function, optical conductivity and reflectivity calculated via EV-GGA ensured the use of both the M 2 TeBr 6 compounds for optoelectronic devices and solar cell applications. Also, the reasonable values of Seebeck coefficients and figure of merit suggested the studied compounds for thermoelectric power generation.

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“…The phonon spectra of Rb 2 TeBr 6 and Cs 2 TeBr 6 has been analysed by the number active method and phonon modes provide valued information about the nature of chemical bonds and interaction among atoms [32]. The reporting melting temperature for Cs 2 TeBr 6 is 1040Kand formation energy 14 KJ mol −1 makes them favourable compounds for practical applications [33]. The photo response to visible light and bandgap production to the visible region by vacancy ordered structure of Cs 2 TeI 6 mark it new novel materials for solar cell applications [34,35].…”

Section: Introductionmentioning

confidence: 99%

Study of lead-free vacancy ordered double perovskites Cs₂TeX₆ (X = Cl, Br, I) for solar cells, and renewable energy

Albalawi¹,

Nazir²,

Younas³

et al. 2022

Phys. Scr.

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Herein, the electronic, optical, mechanical, and transport properties of a double perovskites Cs2TeX6 (X = Cl, Br, I) are explored with the focus on solar cell and thermoelectric applications by the density functional theory (DFT). The feasibility of structural, thermodynamic, and elastic stabilities is arbitrated by a tolerance factor, formation energy, and elastic constant, respectively. Further, the Poisson and Pugh’s ratio display the ductile behavior of studied compounds. From the electronic properties analysis, it is revealed that the bandgap decreases by changing Cl with Br, and I from 2.67 eV to 2.52 eV and 1.73 eV, respectively which in results tune the optical properties from visible to infrared region. The shifting of maximum absorption from visible to infrared region makes them promising materials for solar cell and remote sensing devices. Moreover, various optical parameters including refractive index, reflectivity, and optical loss were also reported. Additionally, the transport characteristics were analyzed by electrical, thermal conductivities, and figure of merit (ZT) versus temperature and chemical potential effect. The ZT increases from Cl to I substitution. At the end, the thermodynamic behavior studied by specific heat capacity, Debye temperature and Hall coefficient was presented. All these characteristics have demonstrated that our studied materials are excellent choice for probing solar cell and renewable energy applications.

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Cited by 10 publications

References 3 publications

X-ray powder diffraction studies of Tl2TeBr6 and Tl2TeI6

X-ray powder diffraction studies of Tl2TeBr6 and Tl2TeI6

Study of optoelectronic and thermoelectric properties of double perovskites for renewable energy

Study of lead-free vacancy ordered double perovskites Cs₂TeX₆ (X = Cl, Br, I) for solar cells, and renewable energy

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Untitled

Cited by 10 publications

References 3 publications

X-ray powder diffraction studies of Tl2TeBr6 and Tl2TeI6

X-ray powder diffraction studies of Tl2TeBr6 and Tl2TeI6

Study of optoelectronic and thermoelectric properties of double perovskites for renewable energy

Study of lead-free vacancy ordered double perovskites Cs2TeX6 (X = Cl, Br, I) for solar cells, and renewable energy

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Product

Resources

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Study of lead-free vacancy ordered double perovskites Cs₂TeX₆ (X = Cl, Br, I) for solar cells, and renewable energy