Sensitized solar cells and their anodes based on ferroelectric single crystal substrates
A technology for solar cells and ferroelectric single crystals, applied in the field of sensitized solar cells, can solve the problems of reducing interfacial recombination effects, photocurrent reduction, complex processes, etc., and achieves the effects of low cost, stable properties, and simple processes
Active Publication Date: 2018-07-13
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
However, in high-efficiency cells, the insulating metal oxide film layer will affect the injection of electrons into the conduction band of the photoanode, resulting in a decrease in photocurrent.
The nano-array electrode material has an ordered structure and is vertical to the electrode surface, which reduces the transmission path of charges in the electrode material to a certain extent and reduces the interfacial recombination effect; but the method is relatively complicated and the cost is high.
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[0023] see figure 1 , is an anode of a sensitized solar cell based on a ferroelectric single crystal substrate, including a ferroelectric single crystal substrate (FE) 1, and the material of the ferroelectric single crystal substrate 1 can be made of various ferroelectric materials. In this embodiment , the material of the ferroelectric single crystal substrate 1 is lithium niobate single crystal. It also includes a conductive layer 2 fabricated on the ferroelectric single crystal substrate 1. In this embodiment, the material of the conductive layer 2 is indium tin oxide (ITO). It also includes a photoelectrode film 3 made on the conductive layer. In this embodiment, the photoelectrode film 3 is made of a titanium dioxide film (TiO2) adsorbed with a photosensitizing dye (Dye).
[0024] as attached figure 2 As shown, a sensitized solar cell based on a ferroelectric single crystal substrate, a laminated structure composed of a ferroelectric single crystal substrate, a conduc...
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The invention discloses a sensitized solar cell based on a ferroelectric single crystal substrate and its anode. The anode includes a ferroelectric single crystal substrate, a conductive layer fabricated on the ferroelectric single crystal substrate, and a conductive layer fabricated on the conductive layer. Photoelectrode film. The sensitized solar cell uses the above-mentioned anode. The sensitized solar cell and its anode use ferroelectric single crystal as the substrate, which has a simple structure and low cost. An effective electric field is introduced into the sensitized solar cell through the spontaneous polarization of the ferroelectric single crystal substrate, which can effectively separate the photogenerated electron-hole To form a steady-state photocurrent, reduce the interface charge recombination effect, and improve the photoelectric conversion efficiency of the sensitized solar cell.
Description
technical field [0001] The invention relates to the field of sensitized solar cells, in particular to a sensitized solar cell based on a ferroelectric single crystal substrate and its anode. Background technique [0002] In recent years, dye-sensitized solar cells have become one of the most attractive research hotspots in the field of photoelectrochemistry, and have achieved good research results. However, the photoelectric conversion efficiency of dye-sensitized solar cells is still very low (12.3%), which has become a difficulty in the practical application of this technology. One of the main factors is that the separation and transport driving force of photogenerated electron-holes is insufficient, This results in significant interfacial charge recombination effect. [0003] Aiming at the interfacial charge recombination effect, there are currently two improvement methods proposed at home and abroad, namely surface passivation of semiconductor nanocrystals and ordered a...
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IPC IPC(8): H01G9/042H01G9/20
Inventor 刘晓燕邢安北村健二曹国忠
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY