Compositional analysis and optical properties of Co doped TiO2 thin films fabricated by spray pyrolysis method for dielectric and p hotocatalytic applications

Optik ◽  
2017 ◽  
Vol 128 ◽  
pp. 212-217 ◽  
Author(s):  
Henry Barasa Wafula ◽  
Robinson Juma Musembi ◽  
Albert Owino Juma ◽  
Patrick Tonui ◽  
Justus Simiyu ◽  
...  
Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1392
Author(s):  
Oleksii Diachenko ◽  
Jaroslav Kováč ◽  
Oleksandr Dobrozhan ◽  
Patrik Novák ◽  
Jaroslav Kováč ◽  
...  

Copper oxide thin films were obtained using pulsating spray pyrolysis method. The morphological, structural, and optical properties of fabricated films were studied. X-ray analysis revealed that the CuO thin films are single-phase. The study of films morphology by SEM and AFM methods showed that the obtained films have a fairly high surface roughness and contain grains of different shapes and sizes. It was found that the obtained films of copper oxide have high values of the absorption coefficient, which confirms the possibility of their use as absorbing layers for solar cells. The obtained values of the optical band gap of the material are in the range from 1.45 eV to 1.60 eV. Raman spectroscopy revealed three modes A1g, B1g, and B2g, of the crystal structure of monoclinic CuO. The devices based on p-type copper oxide are promising for solar cells fabrication because they can reduce production costs, due to their low cost and inexpensive production methods compared to silicon solar cells fabrication.


Optik ◽  
2014 ◽  
Vol 125 (18) ◽  
pp. 5112-5115 ◽  
Author(s):  
S.M. Thahab ◽  
Adel H. Omran Alkhayat ◽  
Salah M. Saleh

2011 ◽  
Vol 406 (8) ◽  
pp. 1429-1435 ◽  
Author(s):  
D. Sarkar ◽  
C.K. Ghosh ◽  
U.N. Maiti ◽  
K.K. Chattopadhyay

Author(s):  
Khalid Haneen Abass

Spray pyrolysis method that used to prepare Cu:NiO thin films onto glass substrate with various annealing temperature. Spectral transmittance of prepared thin films determined by UV-Visible spectrophotometer in the range of (380-900) nm. The transmittance decreased with increasing annealing temperature. While the absorption coefficient and extinction coefficient increased with increasing annealing temperature. Energy gap decreased from 2.9 eV before annealing to 2.78 eV after 500 °C annealing temperature.


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