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arXiv · 1610.06437

Conical-Shaped Titania Nanotubes for Optimized Light Management in DSSCs Reach Back-side Illumination Efficiencies > 8%

Seulgi So·Arian Kriesch·Ulf Peschel·Patrik Schmuki
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Abstract

In the present work, we introduce the anodic growth of conical shaped TiO2 nanotube arrays. These titania nanocones provide a scaffold for dye-sensitized solar cell (DSSC) structures with significantly improved photon management, providing an optimized absorption profile compared with conventional cylindrical nanotube arrays. Finite difference time domain (FDTD) modelling demonstrates a drastically changed power-absorption characteristic over the tube length. When used in a back-side illumination DSSC configuration, nanocone structures can reach over 60 % higher solar cell conversion efficiency than conventional tubes. The resulting {\eta} of ca. 8 % represents one of the highest reported values for Graetzel type DSSCs used under back-side illumination.

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Seulgi So, Arian Kriesch, Ulf Peschel, Patrik Schmuki. 2016-10-19. Conical-Shaped Titania Nanotubes for Optimized Light Management in DSSCs Reach Back-side Illumination Efficiencies > 8%. https://doi.org/10.1039/c5ta02834e

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