Figure 5From: Conical islands of TiO2 nanotube arrays in the photoelectrode of dye-sensitized solar cells Illustrations of the photoelectrodes in DSCs and FESEM images. Illustrations of the photoelectrodes in DSCs with the (a) planar structure of TiO2 nanotube arrays and (b) conical island structure of TiO2 nanotube arrays, and FESEM images of the (c) planar structure of TiO2 nanotube arrays and (d) conical island structure of TiO2 nanotube arrays.Back to article page