scholarly journals Synthesis and Electrical Properties of Ag8SnSe6 Argyrodite Thin Films

2017 ◽  
Vol 18 (1) ◽  
pp. 78-83
Author(s):  
I.V. Semkiv ◽  
N.A. Ukrainets ◽  
V.V. Kusnezh ◽  
E.O. Zmiiovska ◽  
R.Yu. Petrus ◽  
...  

The synthesis of Ag8SnSe6 argyrodite thin films with thickness 500 nm by selenization of Ag-Sn film at 480 oC was carried out. Thin films were investigated by X-ray diffraction. Ternary Ag8SnSe6 synthesized in orthorhombic structure with the lattice parameters a = 7.9081(6) Å, b = 7.8189(7) Å, c = 11.0464(9) Å, V = 683.03(10) Å3. Resistive switching cell based on Ag8SnSe6 argyrodite with silver and graphite electrodes was fabricated. Electrical properties of cell were investigated using impedance spectroscopy and cyclic voltammetry. Cell structure and process in this cell were modeled by electric equvivalent circuit. Resistive switching phenomena in Ag/Ag8SnSe6/C cell at certain applied voltage were demonstrated.

1988 ◽  
Vol 66 (5) ◽  
pp. 373-375 ◽  
Author(s):  
C. J. Arsenault ◽  
D. E. Brodie

Zn-rich and P-rich amorphous Zn3P2 thin films were prepared by co-evaporation of the excess element during the normal Zn3P2 deposition. X-ray diffraction techniques were used to investigate the structural properties and the crystallization process. Agglomeration of the excess element within the as-made amorphous Zn3P2 thin film accounted for the structural properties observed after annealing the sample. Electrical measurements showed that excess Zn reduces the conductivity activation energy and increases the conductivity, while excess P up to 15 at.% does not alter the electrical properties significantly.


2019 ◽  

Transparent conducting oxide (TCO) thin films are materials of significance for their applications in optoelectronics and sun powered cells. Fluorine-doped tin oxide (FTO) is an elective material in the advancement of TCO films. This paper reports the impact of fluorine doping on structural, optical and electrical properties of tin oxide thin films for solar cells application. The sol-gel was prepared from anhydrous stannous chloride, SnCl2 as an originator, 2-methoxyethanol as a solvent, di-ethanolamine as a preservative and ammonium fluoride as the dopant source. FTO precursor solution was formulated to obtain 0, 5, 10, 15 and 20 % doping concentration and deposited on glass substrates by means of spin coater at the rate of 2000 rpm for 40 seconds. After pre-heated at 200 oC, the samples were annealed at 600 oC for 2 h. The structural, optical and electrical characteristics of prepared films were characterized using X-ray diffraction (XRD) analysis, UV-visible spectroscopy and electrical measurement. X-ray diffraction (XRD) investigation of the films demonstrated that the films were polycrystalline in nature with tetragonal-cassiterite structure with most extraordinary pinnacle having a grain size of 17.01 nm. Doping with fluorine decreases the crystallite size. There was increment in the absorbance of the film with increasing wavelength and the transmittance was basically reduced with increasing fluorine doping in the visible region. The energy band gaps were in the range of 4.106-4.121 eV. The sheet resistance were observed to decrease as the doping percentage of fluorine increased with exception at higher doping of 15 and 20 %. In view of these outcomes, FTO thin films prepared could have useful application in transparent conducting oxide electrode in solar cell.


2016 ◽  
Vol 120 (10) ◽  
pp. 104101 ◽  
Author(s):  
N. Vaxelaire ◽  
V. Kovacova ◽  
A. Bernasconi ◽  
G. Le Rhun ◽  
M. Alvarez-Murga ◽  
...  

2011 ◽  
Vol 383-390 ◽  
pp. 822-825
Author(s):  
Ping Luan ◽  
Jian Sheng Xie ◽  
Jin Hua Li

Using magnetron sputtering technology, the CuInSi thin films were prepared by multilayer synthesized method. The structure of CuInSi films were detected by X-ray diffraction(XRD), the main crystal phase peak is at 2θ=42.458°; The resistivity of films were measured by SDY-4 four-probe meter; The conductive type of the films were tested by DLY-2 conductivity type testing instrument. The results show that the annealing temperature and time effect on the crystal resistivity and crystal structure greatly.


2001 ◽  
Vol 666 ◽  
Author(s):  
Fumiaki Mitsugi ◽  
Tomoaki Ikegami ◽  
Kenji Ebihara ◽  
Jagdish Narayan ◽  
Alexander M. Grishin

ABSTRACTWe prepared colossal magnetoresistive La0.8Sr0.2MnO3 thin films on the MgO, SrTiO3 and LaAlO3 single crystal substrates using KrF excimer pulsed laser ablation technique. The structural and electrical properties of the La0.8Sr0.2MnO3 thin films which were strained by the lattice mismatch are reported. The in-plane lattice mismatch between the La0.8Sr0.2MnO3 and MgO, SrTiO3 and LaAlO3 substrates are -7.8 %, -0.5 % and +2.3 %, respectively. The X-ray diffraction spectra of the films exhibited c-axis orientation. In the case of the La0.8Sr0.2MnO3 / LaAlO3 thin films with thickness over 100 nm, the divided (00l) peaks were observed. The surface morphology and transport property of the strongly stressed La0.8Sr0.2MnO3 / LaAlO3 were different from those of La0.8Sr0.2MnO3 / MgO and La0.8Sr0.2MnO3 / SrTiO3thin films.


2007 ◽  
Vol 21 (06) ◽  
pp. 931-945 ◽  
Author(s):  
K. SAMBASIVA RAO ◽  
P. MURALI KRISHNA ◽  
D. MADHAVA PRASAD ◽  
JOON HYUNG LEE

Ferroelectric, hysteresis, impedance spectroscopy parameters, AC conductivity, and piezoelectric properties in the ceramics of Pb 0.74 K 0.52 Nb 2 O 6 and Pb 0.74 K 0.13 Sm 0.13 Nb 2 O 6 have been studied. X-ray diffraction study reveals single phase with the orthorhombic structure. The samples were characterized for ferroelectric and impedance spectroscopy properties from room temperature to 600°C. Cole–Cole plots (Z″ versus Z′) are drawn at different temperatures. The results obtained are analyzed to understand the conductivity mechanism in both the samples. The piezoelectric constant d33 has been found to be 96 × 10-12 C/N in PKN.


2005 ◽  
Vol 19 (01n03) ◽  
pp. 671-673
Author(s):  
PENG XIAO ◽  
WANLU WANG

The Fe 3+- TiO 2 thin films obtained through sol-gel method were characterized by x-ray diffraction, AFM and Raman spectroscopy. It was found that TiO 2 films consisted of nanometer particles. The experimental results shows that the nanometer TiO 2 thin films doped with Fe 3+ were greatly improved in the activity aspect. This may be ascribed to change their structure and electrical properties after doping with Fe 3+. The results were discussed theoretically in detail.


1991 ◽  
Vol 243 ◽  
Author(s):  
M.D. Vaudin ◽  
L.P. Cook ◽  
W. Wong-Ng ◽  
P.K. Schenck ◽  
P.S. Brody ◽  
...  

AbstractThin films of BaTiO3 were deposited on platinum-coated silicon substrates using pulsed laser deposition and characterized using electron microscopy, powder x-ray diffraction and electrical measurements. The microstructure consisted of columnar BaTiO3 grains oriented normal to the substrate. Two preferred orientations were observed, with either the (001) or (111) planes of BaTiO3 being parallel to the substrate. The electrical properties of two films were measured and it was found that the (111) film was ferroelectric and the (001) film was not. Possible reasons for this are discussed.


2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Peijie Lin ◽  
Sile Lin ◽  
Shuying Cheng ◽  
Jing Ma ◽  
Yunfeng Lai ◽  
...  

Ag-doped In2S3(In2S3:Ag) thin films have been deposited onto glass substrates by a thermal evaporation method. Ag concentration is varied from 0 at.% to 4.78 at.%. The structural, optical, and electrical properties are characterized using X-ray diffraction (XRD), spectrophotometer, and Hall measurement system, respectively. The XRD analysis confirms the existence of In2S3and AgIn5S8phases. With the increase of the Ag concentration, the band gap of the films is decreased gradually from 2.82 eV to 2.69 eV and the resistivity drastically is decreased from ~103to5.478×10-2 Ω·cm.


2013 ◽  
Vol 20 (06) ◽  
pp. 1350058 ◽  
Author(s):  
R. E. ORNELAS-ACOSTA ◽  
S. SHAJI ◽  
D. AVELLANEDA ◽  
G. A. CASTILLO ◽  
T. K. DAS ROY ◽  
...  

In this work, we report the formation of In 6 Se 7 thin films by laser irradiation of In / Se layered structure. Indium layer was deposited on glass substrates by thermal evaporation on which selenium thin film was grown by chemical bath deposition from an aqueous solution containing 10 ml of sodium selenosulphate (0.1 M), 1.0 ml acetic acid (25%) and 70 ml distilled water during 5 min. The In / Se coated glass substrates were irradiated using a 532 nm continuous laser for 3–5 min. Structure, morphology, optical and electrical properties of the irradiated thin films were analyzed using various techniques. X-ray diffraction analysis showed that the irradiated thin films were In 6 Se 7 of monoclinic structure. X-ray photoelectron spectroscopic study on the laser irradiated samples provided uniform relative composition of In and Se in the thin films formed after laser irradiation. The morphology, optical and electrical properties of the irradiated samples were investigated. The optical band gap of the In 6 Se 7 thin films was 2.2 eV and also, the thin films were photoconductive.


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