A novel way of improving light harvesting in dye-sensitized solar cells - Electrodeposition of titania

作者：Tsai Tsung Yu; Lu Shih Yuan^*

来源：Electrochemistry Communications, 2009, 11(11): 2180-2183.

DOI：10.1016/j.elecom.2009.09.025

• Dye-sensitized solar cell
• Light scattering
• Light harvesting
• Electrochemical deposition
• Titania

A novel and facile way of improving light harvesting in dye-sensitized solar cells was developed. A thin light scattering layer, composed of patches of closely-packed titania nanoparticles of 10-15 nm in size and generated via an electrodeposition of titania onto the titania photo-anode, resulted in a significant increase of the short-circuit current density by 36%, leading to a 52% increase in the light to electricity conversion efficiency. The existence of this denser nanoparticle layer in the top portion of the titania photo-anode layer, although enhancing the light harvesting of the cell, retarded the diffusion of electrolyte. Consequently, an optimum extent of titania deposition was necessary to achieve a maximum improvement in the light to electricity conversion efficiency of the cell.

• 出版日期2009-11
• 单位清华大学