Sol-gel synthesized mesoporous anatase titanium dioxide nanoparticles for dye sensitized solar cell (DSSC) applications

Bulletin of materials science

P Ramasamy¹  Sumita Mukhopadhyay²  M Senthil Pandian¹  R Govindaraj¹ 

[1] SSN Research Centre, SSN College of Engineering, Chennai 603 110, Tamilnadu, India$$SSN Research Centre, SSN College of Engineering, Chennai 603 110, Tamilnadu, IndiaSSN Research Centre, SSN College of Engineering, Chennai 603 110, Tamilnadu, India$$;Centre of Excellence for Green Energy and Sensor Systems, Indian Institute of Engineering Science and Technology, Howrah, West Bengal 711 103, India$$Centre of Excellence for Green Energy and Sensor Systems, Indian Institute of Engineering Science and Technology, Howrah, West Bengal 711 103, IndiaCentre of Excellence for Green Energy and Sensor Systems, Indian Institute of Engineering Science and Technology, Howrah, West Bengal 711 103, India$$

关键词: Semiconductors;    solâ€�?�gel;    solar cells;    TiO2.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Hierarchically structured titanium dioxide nanoparticles were successfully synthesized by the sol-gel method. The synthesized nanoparticles were subjected to powder X-ray diffraction, UV-Vis DRS spectroscopy, Brunauerâ€�?�Emmettâ€�?�Teller method, Barrettâ€�?�Joynerâ€�?�Halenda analysis, field emission scanning electron microscopy, high-resolution transmission electron microscopy and energy-dispersive X-ray analysis. The powder X-ray diffraction pattern shows that the obtained particles are of anatase phase with good crystallite nature. The nitrogen adsorption and desorption isotherms show that the prepared material has surface area of 31.71 m² g^-1 and the pore size distribution analysis shows the average pore diameters of mesoporous TiO₂ nanostructures to be 7.1 and 9.3 nm. The UVâ€�?�Vis DRS spectrum shows that the TiO₂ nanoparticles are having absorption in the ultraviolet region. The optical band gap of the nanoparticles is 3.2 eV. The morphological studies show the morphology of the particles as spherical in shape. The elemental compositions of TiO₂ nanoparticles were confirmed by energy-dispersive X-ray spectrum analysis. The conversion efficiency of the solar cell was 3.415% with open-circuit voltage (ð‘�??_oc), short-circuit current (𝐽_sc) and fill factor (FF) of 0.607 V, 13.206 mA cm^-2 and 42.56%, respectively.

【 授权许可】

Unknown