Effect of TiO2 nanotube length and lateral tubular spacing on photovoltaic properties of back illuminated dye sensitized solar cell

Bulletin of materials science

A Balakrishnan¹  A M Asha¹  A M Anu¹  B Deepika¹  K R V Subramanian¹  Shantikumar V Nair¹ 

[1] Nano Solar Division, Amrita Centre for Nanosciences, Kochi 682 041, India$$Nano Solar Division, Amrita Centre for Nanosciences, Kochi 682 041, IndiaNano Solar Division, Amrita Centre for Nanosciences, Kochi 682 041, India$$

关键词: TiO2;    back illumination;    dye-sensitized solar cell;    nanotubes.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The main objective of this study is to show the effect of TiO₂ nanotube length, diameter and intertubular lateral spacings on the performance of back illuminated dye sensitized solar cells (DSSCs). The present study shows that processing short TiO₂ nanotubes with good lateral spacings could significantly improve the performance of back illuminated DSSCs. Vertically aligned, uniform sized diameter TiO₂ nanotube arrays of different tube lengths have been fabricated on Ti plates by a controlled anodization technique at different times of 24, 36, 48 and 72 h using ethylene glycol and ammonium fluoride as an electrolyte medium. Scanning electron microscopy (SEM) showed formation of nanotube arrays spread uniformly over a large area. X-ray diffraction (XRD) of TiO₂ nanotube layer revealed the presence of crystalline anatase phases. By employing the TiO₂ nanotube array anodized at 24 h showing a diameter ∼80 nm and length ∼1.5 𝜇m as the photo-anode for back illuminated DSSCs, a full-sun conversion efficiency (ðœ�?) of 3.5%was achieved, the highest value reported for this length of nanotubes.

【 授权许可】

Unknown