Flexible fiber-type dye-sensitized solar cells based on highly ordered TiO2 nanotube arrays

A double-sided, transparent conducting and flexible dye-sensitized solar cell (DSSC) was developed. The device comprised two metal electrodes whereby the working electrode consisted of highly ordered titania (TiO2) nanotube arrays. The maximum conversion efficiency of the DSSC was 5.1% and decreased by 6% under a 90 bending. Surface treatment of the TiO2 nanotube arrays in niobium isopropoxide solution lifted the conversion efficiency to 6.8%. (C) 2013 Elsevier B.V. All rights reserved.