Influence of heat treatment on the properties of thermally evaporated copper selenide thin films

Nelson, P. Issac; Arthi, R.; Kannan, R.; Selvan, Thamil; Ajitha, E.; Ashina, A.; Vidhya, B.

doi:10.1016/j.matlet.2018.03.148

Cited by 15 publications

(4 citation statements)

References 19 publications

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“…The hydrothermal method [ 3 , 8 ], sonochemical method [ 9 ], solution-phase synthetic route [ 10 ], and microwave-assisted method [ 11 ] were employed to prepare hexagonal nanoparticles, spherically shaped nanocrystals, flakes, nanoplatelets, and nanosheets of CuSe. In addition, the synthesis of CuSe in the form of thin films was carried out by various deposition techniques, such as the low-temperature dip type method [ 12 ], pulsed laser deposition [ 7 ], thermal evaporation [ 13 , 14 ], solution growth technique [ 1 ], chemical bath deposition [ 2 , 15 , 16 , 17 ], electrodeposition technique [ 18 ], vacuum evaporation technique [ 19 ], and electrochemical/chemical bath deposition [ 5 ], namely because of the attractiveness of the application of these thin films in the solar cell industry. Among many available methods, mechanochemical synthesis has an inevitable place, due to its environmentally friendly, solventless, and scalable character [ 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Nanostructured CuSe Semiconductor Synthesized in a Planetary and Vibratory Mill

et al. 2020

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Copper(II) selenide, CuSe was prepared from Cu and Se powders in a stoichiometric ratio by a rapid, and convenient one-step mechanochemical synthesis, after 5 and 10 min of milling in a planetary, and an industrial vibratory, mill. The kinetics of the synthesis, and the structural, morphological, optical, and electrical properties of CuSe products prepared in the two types of mill were studied. Their crystal structure, physical properties, and morphology were characterized by X-ray diffraction, specific surface area measurements, particle size distribution, scanning, and transmission electron microscopy. The products crystallized in a hexagonal crystal structure. However, a small amount of orthorhombic phase was also identified. The scanning electron microscopy revealed that both products consist of agglomerated particles of irregular shape, forming clusters with a size ~50 mm. Transmission electron microscopy proved the nanocrystalline character of the CuSe particles. The optical properties were studied using UV–Vis and photoluminescence spectroscopy. The determined band gap energies of 1.6 and 1.8 eV for the planetary- and vibratory-milled product, respectively, were blue-shifted relative to the bulk CuSe. CuSe prepared in the vibratory mill had lower resistivity and higher conductivity, which corresponds to its larger crystallite size in comparison with CuSe prepared in the planetary mill.

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Section: Introductionmentioning

confidence: 99%

Comparative Study of Nanostructured CuSe Semiconductor Synthesized in a Planetary and Vibratory Mill

et al. 2020

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“…The physical properties of metal chalcogenide compounds with semiconductor structure have the capacity to change continuously as the chemical composition of the compound is altered [1]. This behaviour makes them important for sensor and laser materials, thin film polarizers, thermoelectric cooling materials [2,3]. The unique properties of the metal chalcogenide compounds have encouraged a lot of work on the synthesis and characterization of chalcogenide of different groups Among the metal chalcogenide that has received extensive attention is copper selenide (CuSe).…”

Section: Introductionmentioning

confidence: 99%

“…Cu 2−x Se or Cu 2 Se belongs to the group of copper (I) selenide, while CuSe, Cu 3 Se 2 and CuSe 2 belong to the group of copper (II) selenide [8,9]. CuSe can exist in various crystallographic forms such as orthorhombic, monoclinic [10], cubic [8,11], tetragonal and hexagonal [3,10]. It has the ability to form a ternary compound, CuInSe 2, or other multinary materials by integrating indium into the binary compound [12,13].…”

Section: Introductionmentioning

confidence: 99%

Structural and transport mechanism studies of copper selenide nanoparticles

Liew

Talib

Zainal

et al. 2019

Semicond. Sci. Technol.

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Copper selenide (CuSe) nanoparticles were successfully prepared via chemical precipitation method at room temperature. The field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and atomic force microsccopy (AFM) micrograph showed the synthesized CuSe powder is nanoparticles. The energy dispersive x-ray (EDX) analysis and inductively coupling plasma (ICP) analysis showed the formation of the stoichiometric CuSe compound. In-situ x-ray diffraction (XRD) at temperatures ranging from 100 to 473 K was performed to study the structure stability of the CuSe compound. The electrical conductivity, Hall mobility, carrier sheet density and thermal diffusivity of the CuSe compound have been investigated at various temperatures to study the electron-phonon transport mechanism in the compound.

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“…CuSe has received extensive attention due to its unique electrical and optical properties [8][9][10]. This material can be formed into various types of crystallographic structures, such as orthorhombic, monoclinic [11], cubic [12,13], tetragonal, and hexagonal [14,15]. Various crystallographic structures make them essential for specific applications, such as solar cells, superionic conductors, photodetectors, Shottky diodes [16][17][18][19], sensors, polarisers, and thermoelectric devices [15,20].…”

Section: Introductionmentioning

confidence: 99%

Sodium-Based Chitosan Polymer Embedded with Copper Selenide (CuSe) Flexible Film for High Electromagnetic Interference (EMI) Shielding Efficiency

et al. 2021

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Efficient shielding materials are extremely important to minimize the effect of electromagnetic interference. Currently, various composite materials are being investigated with different shielding efficiencies reported. In this paper, a flexible and free-standing sodium-based chitosan (CH/Na) polymer with copper selenide (CuSe) filler was prepared for electromagnetic shielding. The CH/Na/CuSe polymer matrix was prepared via the direct casting technique at different wt% of CuSe, varying from 2 to 20 wt%. The polymer matrix was then characterised by using Fourier transform infrared (FTIR) spectroscopy to confirm the interaction between the CH/Na and CuSe. The XRD results revealed that the CH/Na/CuSe polymer was successfully formed. Improvement in the electrical conductivity was confirmed by an impedance spectroscopy measurement. The highest electrical conduction recorded was at 3.69 × 10−5 S/cm for CH/Na/CuSe polymer matrix with 20 wt% CuSe. An increase in total electromagnetic interference (EMI) shielding efficiency (SET) of up to 20 dB (99% EM power shield) was achieved, and it can be increased up to 34 dB (99.9% EM power shield) with the thickness of the polymer increased.

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Influence of heat treatment on the properties of thermally evaporated copper selenide thin films

Cited by 15 publications

References 19 publications

Comparative Study of Nanostructured CuSe Semiconductor Synthesized in a Planetary and Vibratory Mill

Comparative Study of Nanostructured CuSe Semiconductor Synthesized in a Planetary and Vibratory Mill

Structural and transport mechanism studies of copper selenide nanoparticles

Sodium-Based Chitosan Polymer Embedded with Copper Selenide (CuSe) Flexible Film for High Electromagnetic Interference (EMI) Shielding Efficiency

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