Structural and Electrical Properties of Copper Sulfide (CuS) Thin Films doped with Mercury and Nickel impurities

Osuwa, J. C.; Mgbaja, E. C.

doi:10.9790/4861-06532831

Cited by 6 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Если ранг р < 3, то критическая точка нестабильна. Возможны всего четыре невырожденные критические точки ЭП: (3, -3), (3, -1), (3,1), (3,3). Критические точки (3, -3) отвечают локальным максимумам ЭП, которые совпадают с положениями ядер; точка (3, 1) называется циклической критической точкой и важна для анализа циклических структур; точка (3, 3) соответствует локальному минимуму ЭП и важна для анализа клеточных структур.…”

Section: анализ и обсуждениеunclassified

TOPOLOGICAL FEATURES OF THE ELECTRON DENSITY DISTRIBUTION IN COVELLITE: POSITION Cu1.

Pogoreltsev¹,

Матухин²,

Сафонова³

et al. 2018

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

View full text Add to dashboard Cite

The synthesized sample of covellite was investigated by NQR 63,65Cu methods. The experimentally determined values of the quadrupole frequency νQ and the asymmetry parameter η have been used to study the distribution of electron density in the region of the quadrupole nuclei in position Cu1. It is found that Cu-S bond in position Cu1 is ionic, and the gap LUMO-HOMO decreases with increasing temperature.

show abstract

Section: анализ и обсуждениеunclassified

TOPOLOGICAL FEATURES OF THE ELECTRON DENSITY DISTRIBUTION IN COVELLITE: POSITION Cu1.

Pogoreltsev¹,

Матухин²,

Сафонова³

et al. 2018

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

View full text Add to dashboard Cite

show abstract

“…Most group II-IV compound semiconductors such as CdS, CdSe, ZnS, ZnO are studied under UV irradiation with high-pressure lamps at different wavelengths. CdS semiconductors are the most studied among II-IV compound semiconductors due to its bandgap (2.42 eV) and size-dependent properties in relation to their corresponding bulk material [16][17][18]. The band theory suggests that the valence and conduction band divide the bandgap with energetic range for semiconductors between 0.7-3.5 eV [19,20].…”

Section: Introductionmentioning

confidence: 99%

Octadecyl amine capped cadmium sulfide quantum dots: morphological studies, electrochemical properties, and its use as photocatalyst for the degradation of methylene blue dyes

Ajibade¹,

Mkhwanazi²,

Mphahlele³

2021

View full text Add to dashboard Cite

We present the structural, optical, electrochemical, and photocatalytic studies of octadecyl amine capped CdS quantum dots (ODA-CdS). TEM micrographs showed CdS quantum dots with particle sizes of 1.9-5.2 nm. The optical bandgaps of the quantum dots are 2.03, 2.06 and 2.01 eV for ODA-CdS1, ODA-CdS2 and ODA-CdS3 respectively, which was less than the bandgap of the bulk CdS (2.42 eV). Photo-electrochemical band gaps of 2.60 V for ODA-CdS1, 2.24 V for ODA-CdS2 and 2.46 V for ODA-CdS3 were obtained from cyclic voltammetry. The photocatalytic degradation efficiency of methylene blue was 62% for ODA-CdS1, 80% for ODA-CdS2, 69% for ODA-CdS3.

show abstract

“…Duan et al [10] have shown that changes in temperature have a significant effect on lattice structures but not necessarily on conductivity. In a narrow temperature range, thermal conductivity data for Cu2S [11][12][13][14][15] and FeS2 [16] are available in the literature. In all sources, copper and iron sulfides are classified as semiconductors (p-type) with thermal conductivity values between 1.2 and 1.3 Wm -1 K -1 .…”

Section: Introductionmentioning

confidence: 99%

Thermal Conductivity of Solidified Industrial Copper Matte and Fayalite Slag

Sibarani

Hamuyuni

Luomala

et al. 2020

JOM

View full text Add to dashboard Cite

The thermal conductivity of various copper matte and fayalite slag was measured using laser flash analysis, a non-steady state measurement method. Industrial matte and slag samples were taken in such a way that their composition represented typical process conditions. Thermal conductivities for solid copper matte (average 64 % Cu) were found to be from 1.2 W m -1 K -1 at 300 °C to 2.1 W m -1 K -1 at 900 °C. Because arsenic is one of the most important impurities in copper matte, its effect on thermal conductivity was investigated with As-doped matte samples up to 0.59 % As. The results showed substantially lower thermal conductivity, between 0.5 and 1.3 W m -1 K -1 at 300 to 900 °C with low As matte, behavior that is analogous to that of a semiconductor. The data obtained showed that the thermal conductivity of copper matte increased linearly with temperature, but the gradient was small. The thermal conductivity of slags was found to be between 1.6 and 1.9 W m -1 K -1 , values that are consistent with earlier studies.

show abstract

Structural and Electrical Properties of Copper Sulfide (CuS) Thin Films doped with Mercury and Nickel impurities

Cited by 6 publications

References 8 publications

TOPOLOGICAL FEATURES OF THE ELECTRON DENSITY DISTRIBUTION IN COVELLITE: POSITION Cu1.

TOPOLOGICAL FEATURES OF THE ELECTRON DENSITY DISTRIBUTION IN COVELLITE: POSITION Cu1.

Octadecyl amine capped cadmium sulfide quantum dots: morphological studies, electrochemical properties, and its use as photocatalyst for the degradation of methylene blue dyes

Thermal Conductivity of Solidified Industrial Copper Matte and Fayalite Slag

Contact Info

Product

Resources

About