Preparation and Characterization of TiO2-SiO2 Sol-Gel Anti Reflection Coatings on Multi Crystalline Silicon Solar Cell
P.H.V. Sesha Talpa Sai1, J.V. Ramana Rao2, Devarayapalli K.C.3, K.V.Sharma4
1P.H.V. Sesha Talpa Sai, Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Hyderabad, (A.P). India.
2J.V. Ramana Rao, Center for Nano Science and Technology, Jawaharlal Nehru Technological University, Hyderabad, (A.P). India.
3Devarayapalli K.C, Bhaskar Engineering College, Moinabad, Hyderabad, (A.P). India.
4K.V. Sharma, Department of Mechanical Engineering, JNTUH College of Engineering, Manthani, Karimnagar.
Manuscript received on September 29, 2013. | Revised Manuscript received on October 10, 2013. | Manuscript published on October 30, 2013. | PP: 396-399 | Volume-3, Issue-1, October 2013. | Retrieval Number: A2302103113/2013©BEIESP
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Abstract: Nano scale TiO2 and TiO2–SiO2 mixed solutions have been prepared using sol-gel process and are deposited on multi crystalline silicon solar cell by spray process. Subsequent annealing is carried out to obtain amorphous crystalline structure of TiO2 and to form crack free and homogeneous coating of TiO2–SiO2 mixed layer. The coated cells are characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and Energy dispersive X-ray Spectroscopy (EDS). Electrical parameters are estimated to observe the enhancement of conversion efficiencies of the coated cells. Results obtained shows that the cell coated with mixed solution of TiO2–SiO2 gives better performance than the cell coated with TiO2 solution. It is due to the introduction of SiO2 particles during the synthesis of TiO2 which enhances the optical and electrical properties of the thin film coat of the compound solution. Subsequent annealing after the coatings helps in forming homogeneous layer with reduced cracks on the surface and increased conversion efficiency of the multi crystalline silicon solar cell.
Keywords: Multi Crystalline Silicon Solar cell, Sol-Gel, TiO2 , TiO2 -SiO2 .