The influence of the silicon substrate temperature on structural and optical properties of thin-film cadmium sulfide formed with femtosecond laser deposition

2006 ◽  
Vol 382 (1-2) ◽  
pp. 105-109 ◽  
Author(s):  
X.L. Tong ◽  
D.S. Jiang ◽  
Y. Li ◽  
Z.M. Liu ◽  
M.Z. Luo
2011 ◽  
Vol 520 (1) ◽  
pp. 131-137 ◽  
Author(s):  
D. Munoz-Martin ◽  
J.M. Fernandez-Navarro ◽  
J. Gonzalo ◽  
G. Jose ◽  
A. Jha ◽  
...  

2004 ◽  
Vol 331 (3-4) ◽  
pp. 248-251 ◽  
Author(s):  
Y.F. Mei ◽  
G.G. Siu ◽  
X.H. Huang ◽  
K.W. Cheah ◽  
Z.G. Dong ◽  
...  

2005 ◽  
Vol 891 ◽  
Author(s):  
Kousik Samanta ◽  
Pijush Bhattacharya ◽  
Ram S. Katiyar ◽  
W. Iwamoto ◽  
R. R. Urbano ◽  
...  

ABSTRACTThin films of Co substituted ZnO and ZnCo2O4 were deposited on c-axis (0001) oriented Al2O3 substrates using pulsed laser deposition. The XRD results showed all the films were highly (002) oriented with a less intense peak of (311) for ZnCo2O4 thin film. Micro-Raman spectra of ceramic targets showed the modes related to wurtzite ZnO and spinel ZnCo2O4 structures. In thin films of Zn1−xCoxO no modes corresponding to ZnCo2O4 were detected. The intensity of E1(LO) and multiphonon peak at 584 and 540 cm−1 respectively, increased with increase in Co substitution. The optical absorption of the films showed that the band gap decreased with increase of Co concentrations at room temperature along with the sub-bandgap absorptions due to d-d transitions of Co2+. Similar sub-bandgap d-d transition was also observed in the absorption spectra ZnCo2O4 thin films. The highest saturated magnetization (0.2μB/Co) was obtained for 5%Co substituted ZnO.


2019 ◽  
Vol 30 (1) ◽  
pp. 205
Author(s):  
Nadheer Jassim Mohammed ◽  
Hassan A. Mahdi ◽  
Safaa F. Madlul ◽  
Adnan Kh. Hasan

In this research , we study the effect of substrate temperature (423K and 473K) on structural and optical properties for thin films of cadmium sulfide (CdS) by evaporation thermal deposition method on glass substrates and the thickness was about (390nm).XRD analysis showed that CdS thin films prepared at (423K and 473K) are single crystal and have preferred orientation along (002).The grain size was found to be increased with increasing substrate temperature, in addition, the atomic force microscopy(AFM) an increase in root mean square (RMS) with an increase in substrate temperature. The absorbance and transmittance spectra have been recorded in the range off wave length(400-800nm), and it was found that the transmittance decreases with increasing substrate temperature, while the optical band gap decreases from (2.4-2.2ev)for allowed direct transition. CdS thin films should further investigated for application towards the fabrication of solar cells.


2013 ◽  
Vol 537 ◽  
pp. 224-228
Author(s):  
Yi Liu ◽  
Hong Mo Huang ◽  
Xiao Dong Lin

TiO2 thin films were prepared on quartz glasses by pulsed laser deposition (PLD) using a KrF laser excimer. The crystalline structure was characterized by X-ray diffraction, and the optical properties of the films were investigated using spectroscopic ellipsometry and UV-vis spectra respectively. The effects of the PLD conditions, including substrate temperature and O2 pressure on the crystalline structure and the optical properties of the films were investigated. The results indicated that there are a suitable substrate temperature and an O2 pressure which is favorable for the synthesis of anatase-type TiO2.


2018 ◽  
Vol 15 (3) ◽  
pp. 300-303
Author(s):  
Baghdad Science Journal

At a temperature of 300 K, a prepared thin film of Ag doped with different ratios of CdO (0.1, 0.3, 0.5) % were observed using pulse laser deposition (PLD). The laser, an Nd:YAG in ?=1064 nm, used a pulse, constant energy of 600 mJ ,with a repetition rate of 6 Hz and 400 pulses. The effect of CdO on the structural and optical properties of these films was studied. The structural tests showed that these films are of a polycrystalline structure with a preferred orientation in the (002) direction for Ag. The grain size is positively correlated with the concentration of CdO. The optical properties of the Ag :CdO thin film we observed included transmittance, absorption coefficient, and the energy gap in the wavelength range of 300-1100 nm. The prepared films, direct energy gap is negatively correlated to concentration of CdO.


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