Volume : 2, Issue : 2, JAN 2018
OPTOELECTRONIC AND STRUCTURAL EFFECT OF NANO-PARTICLES ON CERIUM TITANIUM TRIOXIDE THICK FILMS
Cliff Orori Mosiori, Duke Ateyh Oeba
Light sensing forms a basis of fabricating solar cells which in turn promise to avail clean and sustainable electrical suitable to make worthwhile contributions to solving global renewable-energy challenges. Current solar cell technology heavily relies on crystalline silicon wafers.Due to its challenges, great research interest is now directed towards thin-film solar cells. An attempt on organic semiconductors materials has presented much poorer charge transports and shorter exciton diffusion lengths than inorganic ones do. These has greatly limit the thickness of the photoactive layer in case of organic materials. Theoretically, materials with high electrical conductivity such as metal nanoparticles are opaque. They also offer lower optical transparency. Therefore, finding materials that are both transparent to visible light and electrically conductive is a continues study so that today’s popular devices such as liquid-crystal displays and organic light-emitting diodes in televisions, touch screens in phones or tablet computers, electrophoretic displays in e-readers, or solar cells are visible.in this work, silver nanoparticles were used to dope cerium titanium dioxide by using a laser source at low pressure oxygen atmosphere irradiations. It was found that this proceedure generated CexAg0.02xTiO2 composite when pure cerium oxide, silver metal and titanium dioxide composites were used. The resulting thin films were found to possess higher absorption coefficients in the UV-visible spectral region accompanied with a tunable optical band gap varying between 3.42 eV to 3.78 eV. It was proposed to be suitable for wind band gap optical applications like in lasers design and applications.
CeTiO2, Composite, CexAg0.02xTiO2 thin films, laser radiation
Article : Download PDF
Cite This Article
Article No : 2
Number of Downloads : 108
1. Ritala, M., Leskelä, M., Nykänen, E., Soininen, P., & Niinistö, L. (1993). Growth of titanium dioxide thin films by atomic layer epitaxy. Thin Solid Films, 225(1), 288-295.
2. Arabatzis, I. M., Stergiopoulos, T., Bernard, M. C., Labou, D., Neophytides, S. G., & Falaras, P. (2003). Silver-modified titanium dioxide thin films for efficient photodegradation of methyl orange. Applied Catalysis B: Environmental, 42(2), 187-201. 3. Machida, M., Norimoto, K., & Kimura, T. (2005). Antibacterial activity of photocatalytic titanium dioxide thin films with photodeposited silver on the surface of sanitary ware. Journal of the American Ceramic society, 88(1), 95-100. 4. Hass, G. (1952). Preparation, properties and optical applications of thin films of titanium dioxide. Vacuum, 2(4), 331-345. 5. Justicia, I., Ordejón, P., Canto, G., Mozos, J. L., Fraxedas, J., Battiston, G. A., ... & Figueras, A. (2002). Designed Self‐Doped Titanium Oxide Thin Films for Efficient Visible‐Light Photocatalysis. Advanced Materials, 14(19), 1399-1402. 6. Argall, F. (1968). Switching phenomena in titanium oxide thin films. Solid-State Electronics, 11(5), 535-541. 7. Sberveglieri, G., Comini, E., Faglia, G., Atashbar, M. Z., & Wlodarski, W. (2000). Titanium dioxide thin films prepared for alcohol microsensor applications. Sensors and Actuators B: Chemical, 66(1), 139-141. 8. Suzuki, T., Kosacki, I., Anderson, H. U., & Colomban, P. (2001). Electrical conductivity and lattice defects in nanocrystalline cerium oxide thin films. Journal of the American Ceramic Society, 84(9), 2007-2014. 9. Keomany, D., Poinsignon, C., & Deroo, D. (1994). Sol gel preparation of mixed cerium—titanium oxide thin films. Solar Energy Materials and Solar Cells, 33(4), 429-441. 10. Younis, A., Chu, D., & Li, S. (2012). Oxygen level: the dominant of resistive switching characteristics in cerium oxide thin films. Journal of Physics D: Applied Physics, 45(35), 355101. 11. Yoshimoto, M., Shimozono, K., Maeda, T., Ohnishi, T., Kumagai, M., Chikyow, T., ... & Koinuma, H. (1995). Room-temperature epitaxial growth of CeO2 thin films on Si (111) substrates for fabrication of sharp oxide/silicon interface. Japanese journal of applied physics, 34(6A), L688. 12. Bhuiyan, M. S., Paranthaman, M., & Salama, K. (2006). Solution-derived textured oxide thin films—a review. Superconductor Science and technology, 19(2), R1.
13. Keomany, D., Poinsignon, C., & Deroo, D. (1994). Sol gel preparation of mixed cerium—titanium oxide thin films. Solar Energy Materials and Solar Cells, 33(4), 429-441.