Transparent Conductive Oxide Layer-Less Three Dimensional Dye Sensitized Solar Cells: Fabrication of Ionic Path in Three Dimensional Ti Electrode

Abstract

A transparent conductive oxide-less dye-sensitized solar cell (TCO-less DSC) consisting of a thick and porous Ti electrode is reported. The Ti electrode was contacted with the back of a stained porous titania layer. A thick Ti electrode prepared by conventional sputtering prevented ionic diffusions through the Ti electrode and decreased photovoltaic performance. Tetrapod-shaped ZnO crystals were used to prepare straight and continuous nanopores in the Ti electrode to maintain the ionic diffusion. 8% efficiency of the TCO-less DSC is also reported. #

Evaluation and Optimization to Recycle Used TiO2Photoelectrode for Dye-Sensitized Solar Cells

“…However, some modules may age [4][5][6] by breaking or desorbing dye molecules from the titanium oxide (TiO 2 ) surface arising from the H 2 O in the atmosphere after long-term exposure to full sunlight [7]. Furthermore, the transparent conductive electrode, which is an important component of a DSC, is also expensive [8][9][10]. Accordingly, DSC modules should have the reparable or recyclable functionalities.…”

Flexible transparent conductive oxide-less flat and cylinder dye-sensitized solar cells

“…1,2 The TCO-glass has been used in the vast majority of DSCs. [4][5][6][7] Figure 1 shows a representative TCO-less DSC structure. 3 In addition, it is not easy to fabricate the TCO layer inside of a curved glass, which limits the shape of the solar cells.…”

Transparent Conductive Oxide Less Flexible Dye-sensitized Solar Cells with Flat and Cylinder Shapes

“…We focused on structures and fabrication process of transparent conductive oxide less DSCs (TCO-less DSCs), where porous metal electrodes are fabricated at the back side of titania/dye layers as back-contact structures as shown in Fig.1. [3][4][5][6][7] We have already reported flat type, fiber type, and cylinder type dye sensitized solar cells [8][9][10][11][12]. In this report, how to optimize the structure for each cell is discussed.…”