Spectroscopic study and thermoelectric properties of copper sulfide thin films prepared by the flash evaporation method

被引：16

作者：

Amiri, L. ^{[1
]}

Narjis, A. ^{[1
,2
]}

Nkhaili, L. ^{[1
]}

Bousseta, M. ^{[1
]}

Elmassi, S. ^{[1
]}

Tchenka, A. ^{[1
]}

Drissi, S. ^{[1
]}

Abali, A. ^{[1
]}

Somaily, H. H. ^{[3
,4
]}

El Kissani, A. ^{[1
]}

El Assali, K. ^{[1
]}

Outzourhit, A. ^{[1
]}

机构：

[1] Cadi AyyadUniv, Fac Sci Semlalia, Lab Mat Energy & Environm LaMEE, POB 2390, Marrakech 40000, Morocco

[2] Univ Ibn Zohr, Ecole Natl Sci Appl, BP 1136, Agadir 80000, Morocco

[3] King Khalid Univ, Res Ctr Adv Mat Sci RCAMS, POB 9004, Abha 61413, Saudi Arabia

[4] King Khalid Univ, Fac Sci, Dept Phys, POB 9004, Abha, Saudi Arabia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 924卷

关键词：

Copper sulfide; Flash Evaporation; Seebeck coefficient; Thermoelectric properties; Annealing; ELECTRICAL-PROPERTIES; OPTICAL-PROPERTIES; PHASE; CU1.8S;

D O I：

10.1016/j.jallcom.2022.166479

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Different phases of copper sulfide were synthesized by the Flash Evaporation method, followed by annealing at various temperatures. Pure and mixed crystal structures of the covellite, digenite and djurleite phases were identified by the X-ray diffraction patterns and Raman spectroscopy. Scanning Electron Microscopy revealed the effect of annealing on the surface morphology. The carrier concentration was found to decrease with increasing the annealing temperature due to the disappearance of copper vacancies. This results in an increase in the Seebeck coefficient and a decrease in the electrical conductivity. The thermoelectric power factor is better when the digenite phase dominates and doping may be a possible solution towards the integration of this material in the thermoelectric technology. Finally, annealing provided access to the Density Of States engineering, which is useful for future investigations. (c) 2022 Published by Elsevier B.V.

引用

页数：7

共 34 条

[1]

Bhattacharya R.N., 1981, B MATER SCI, V3, P403

[2] Scanning electrochemical microscopy studies of micropatterned copper sulfide (CuxS) thin films fabricated by a wet chemistry method [J].