The study of morphology-controlled synthesis and the optical properties of CuSe nanoplates based on the hydrothermal method

Hou, Xin; Xie, Pei; Xue, Shaolin; Feng, Han; Li, Lingwei; Liu, Zhiyuan; Zou, Rujia

doi:10.1016/j.mssp.2018.01.023

Cited by 30 publications

(16 citation statements)

References 63 publications

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“…With the increasing number of defects in the structure, the number of electrons in the bandgap increases, which leads to the photoluminescence increase. Analogous to other reported CuSe systems, the size and morphology of the different CuSe products may be responsible for the differences in the shift of emission peaks in the spectra [ 46 , 47 ].…”

Section: Resultsmentioning

confidence: 84%

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: Resultsmentioning

confidence: 84%

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

et al. 2020

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“…We demonstrate that under irradiation with femtosecond optical pulses, the direction of transverse photocurrent generated in a thin CuSe film reverses when we switch circular polarization of the excitation beam from left-to right-handed. Having direct and indirect bandgaps of 1.43 eV and 1.02 eV, respectively, 29 CuSe shows promising photoelectric and optical properties, [29][30][31] being an attractive material for electronic and optoelectronic applications. 32 We demonstrate that in CuSe films, the SPGE gives rise to the polarization-sensitive photovoltage that can be used, for example, to visualize the photon helicity.…”

mentioning

confidence: 99%

Photon helicity driven surface photocurrent in CuSe films

Михеев

Kogai

Mogileva

et al. 2019

Applied Physics Letters

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We report excitation of the spin-polarized currents in CuSe nanocrystalline films and demonstrate that the inversion of the excitation photon helicity reverses the direction of the photocurrent propagating perpendicular to the plane of incidence. By performing measurements of the photocurrent propagating both along and perpendicular to the plane of incidence, we show that the observed spin-polarized currents originate from the circular surface photogalvanic effect (C-SPGE). In contrast to the conventional circular photogalvanic effect, which is associated with spin-orbit interaction and can be observed in gyrotropic media, the C-SPGE originates from the scattering of the spin-polarized charge carriers on the surface. We demonstrate that in CuSe films, the C-SPGE gives rise to the photon helicity sensitive photoresponse, making this material attractive for optoelectronics and spintronics applications.

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“…During the past decade, various preparation methods have been developed to realize the morphology and structure-controlled synthesis of pure layered TMSe materials. [86][87][88][89][90][91] Meanwhile, hybridization of layered TMSes with other materials, e.g., carbon materials, metal oxides, and metal sulfides, is also beneficial for their energy storage application due to the synergistic effect between the new materials and the composites. This signifies how the development of TMSes has been dramatically enriched by adopting one or more different techniques to enable significant tailoring of material properties in the past few years.…”

Section: Methods To Prepare 2d Layered Transition Metal Selenides (Tm...mentioning

confidence: 99%

A mini-review focusing on ambient-pressure chemical vapor deposition (AP-CVD) based synthesis of layered transition metal selenides for energy storage applications

Konar

Nessim

2022

Mater. Adv.

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The study of morphology-controlled synthesis and the optical properties of CuSe nanoplates based on the hydrothermal method

Cited by 30 publications

References 63 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

Photon helicity driven surface photocurrent in CuSe films

A mini-review focusing on ambient-pressure chemical vapor deposition (AP-CVD) based synthesis of layered transition metal selenides for energy storage applications

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