Perovskite solar cell having compact film of silver/titanium dioxide nanometer composite material
A nano-composite material and solar cell technology, applied in the field of solar cells, can solve the problems such as the inability to effectively improve the photoelectric conversion efficiency, and achieve the effects of easy and feasible operation, simple method and flexible application.
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- Publication Date
- 2017-12-08
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
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Abstract
Description
technical field
[0001] The invention relates to the technical field of solar cells, in particular to a dense layer obtained from a silver / titanium dioxide nanocomposite material and a perovskite solar cell with a silver / titanium dioxide nanocomposite dense film. Background technique
[0002] At present, the field of solar cells is developing rapidly. Compared with the existing solar cell technology, perovskite materials and devices have several advantages. Perovskite materials have strong light absorption ability, high extinction coefficient, and excellent carrier transport characteristics. , can be prepared at low temperature, etc., so it is a very excellent photovoltaic material that absorbs sunlight. At the same time, due to its special plasmonic effect, silver particles can form resonance with incident photons in a certain frequency range of incident light, and greatly Enhance the absorption of light.
[0003] At present, perovskite solar cells based on carbon counter e...
Examples
Embodiment 1
[0025] Silver nitrate and titanium dioxide were mixed at a silver-titanium molar ratio of 2.5%, and ethanol was used as a solvent to stir at a constant speed for 1 hour to prepare a dense layer precursor colloidal solution.
[0026] Clean the FTO conductive glass substrate, spin-coat a dense layer precursor solution containing silver nitrate on it, heat at 150°C for 10 minutes, spin coat once after cooling, and heat at 500°C for 30 minutes to obtain a dense layer film.
[0027] Then spin-coat titanium dioxide and zirconium dioxide on the obtained dense layer film at 3500 rpm for 20 s and 5000 rpm for 20 s, and anneal at a high temperature of 500 ° C for 30 min to obtain a 150 nm thick titanium dioxide layer and a 200 nm thick zirconium dioxide layer, that is, a mesoporous layer.
[0028] The perovskite film was formed by spin-coating lead iodide methylamine solution on the mesoporous layer and heating at 70 °C for 10 min.
[0029] Finally, the carbon counter electrode is print...
Embodiment 2
[0032] Silver nitrate and titanium dioxide are mixed at a molar ratio of silver to titanium of 1.5%, and a dense layer precursor solution is prepared in ethanol as a solvent. Subsequently, the method in Example 1 was used to sequentially prepare a silver / titania nanocomposite dense layer, a titanium dioxide and zirconium dioxide mesoporous layer, a perovskite layer and a carbon counter electrode.
Embodiment 3
[0034] Silver nitrate and titanium dioxide are mixed at a molar ratio of silver to titanium of 0.5%, and a dense layer precursor solution is prepared in ethanol as a solvent. Subsequently, the method in Example 1 was used to sequentially prepare a silver / titania nanocomposite dense layer, a titanium dioxide and zirconium dioxide mesoporous layer, a perovskite layer and a carbon counter electrode.