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Frontside illuminated TiO2 nanotube dye-sensitized solar cells using multifunctional microchannel array electrodes

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7 Author(s)
Liu, Yong ; Institute for Solar Energy Systems, State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, People''s Republic of China ; Wang, Hai ; Li, Ming ; Hong, Ruijiang
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Here we report a frontside illuminated TiO2 nanotube based dye-sensitized solar cell (DSSC). The photoanode with inclined microchannels (IMCs) formed by laser drilling acted as a multifunctional role for enhancing the cell’s efficiency; light trapping, pathway for transporting electrolyte, and extra surface area for dye loading. The amount of N719 dye absorbed on IMCs photoanode was measured to be 3.83×10-7 mol/cm2, which was almost 1.82 times as high as that of the flat photoanode. The frontside illuminated DSSC showed an energy conversion efficiency of 4.1% under AM1.5 condition, which was much higher compared to that (3.1%) of the backside illuminated DSSC.

Published in:

Applied Physics Letters  (Volume:95 ,  Issue: 23 )

Date of Publication:

Dec 2009

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