Preparation method of carbon electrode mesoscopic perovskite battery, perovskite battery, assembly and power generation system
A perovskite battery, carbon electrode technology, applied in electrical components, electric solid state devices, circuits, etc., can solve the problems of low photoelectric conversion efficiency, weak built-in field of perovskite, low open circuit voltage, etc.
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Embodiment 1
[0049] The preparation method of a carbon electrode mesoscopic perovskite battery, the perovskite battery, the component, and the power generation system provided by the embodiments of the present invention, such as figure 1 , 2 shown, including:
[0050] Step S1: select a glass substrate 1, prepare a transparent conductive film 2 on the glass substrate 1, and form a transparent conductive substrate with the transparent conductive film on the glass substrate 1;
[0051] Or directly use high transmittance FTO conductive glass as transparent conductive substrate;
[0052] Then clean the transparent conductive substrate, first wipe the surface of the FTO substrate with dust-free paper dipped in ethanol, then ultrasonically clean it with detergent, deionized water, acetone, and ethanol for 15-20 minutes in turn, dry it in a ventilated oven, and pass O 3 After UV treatment for 20 minutes, the transparent conductive substrate was cleaned.
[0053] Step S2: prepare the dense elect...
Embodiment 2
[0070] The difference between Example 2 and Example 1 is that the inorganic ferroelectric in step S4 in Example 1 is PZT, and the inorganic ferroelectric in S4 in Example 2 is PbTiO 3 , BaTiO 3 or BiFeO 3 Any of the BaTiO 3 The ferroelectricity is weak, and the field passivation effect is not as good as that of PZT; BiFeO 3 Although it has a strong ferroelectric polarization, due to the preparation of pure phase BiFeO 3 very difficult, so usually in BiFeO 3 The ferroelectric polarization measured in ceramics is also weak, so BiFeO 3 Field passivation is also weak; PbTiO 3 Compared to BaTiO 3 or BiFeO 3 It has stronger ferroelectricity, and the field passivation effect is not much different from that of PZT; image 3 Select PZT, PbTiO for ferroelectric spacer insulating layer 3 , BaTiO 3 , BiFeO 3 The experimental comparison data of the open circuit voltage of carbon electrode mesoscopic perovskite cells and the rate of carrier separation and extraction when zirconia...
Embodiment 3
[0072] The difference between Embodiment 3 and Embodiment 1 lies in step S7, and the features of S7 in Embodiment 3 are:
[0073] Step S7: polarizing the ferroelectric spacer insulating layer 5;
[0074] The ferroelectric is polarized by applying an electric field to it. Since the PFM is used to apply an electric field to the ferroelectric, the polarization effect is better, but it takes a long time and equipment investment is large, so the polarization effect is more demanding. The process of applying an electric field to the ferroelectric spacer insulating layer in the case of high is performed using PFM;
[0075] Using PFM to apply a forward ferroelectric polarization field perpendicular to the surface of the perovskite cell from the perovskite light absorbing layer 7 to the transparent conductive substrate to the ferroelectric spacer insulating layer 5, the applied electric field is greater than the ferroelectric coercivity of PZT field, so that the ferroelectric spacer i...
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