Perovskite-based thin film solar cell and preparation method thereof
A thin-film solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of high battery production costs, unsatisfactory photocurrent and battery efficiency of perovskite-based thin-film solar cells, and achieve strong adaptability, Low cost, cost reduction effect
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[0046] Before describing the embodiments of the present invention in detail, the battery efficiency measurement method used in the present invention will be introduced first. The photoelectric performance of the battery was measured with a computer-controlled potentiostat / galvanostat (Princeton Applied Research, Model 263A). Connect the photoanode and photocathode of the prepared solar cell device to the working electrode and the counter electrode terminal of the potentiostat / galvanostat, respectively. The light source uses a 500W xenon lamp, and the incident light intensity is 100mw / cm 2 , the illuminated area is 0.1cm 2 . Unless otherwise specified, the photoelectric performance measurements in the following examples are all carried out at room temperature.
[0047] Terms used in the present invention, unless otherwise indicated, are to be understood according to their conventional meanings in the technical field.
[0048] The inventors of the present application have fo...
Embodiment 1
[0064] The perovskite-based thin film solar cell structure in this embodiment is as follows figure 1 shown.
[0065] First, a layer of TiO was screen-printed on the FTO glass 2 thin film layer, followed by screen printing a layer of TiO 2 After the nanocrystalline layer is heated at 450° C. for 30 minutes, a dense layer 12 with a thickness of 50 nm and a porous scaffold layer 13 with a thickness of 500 nm are obtained. Subsequently, a two-step liquid phase method was used to deposit CH into the porous scaffold layer 13 3 NH 3 PB 3 light-absorbing material. First place 1.2M of PbI 2 The dimethylformamide (DMF) solution was spin-coated on the surface of the porous scaffold layer 13 at a rotational speed of 3000 rpm. After continuous spin coating for 30 seconds, it was heated at 90° C. for 2 minutes, and then the porous scaffold layer 13 was added at a concentration of 10 mg / mL. CH 3 NH 3 Soak in isopropanol solution of I for 10 minutes, and finally heat at 90°C for 45 m...
Embodiment 2
[0070] The perovskite-based thin film solar cell structure in this embodiment is as follows figure 2 shown.
[0071] First, a layer of TiO was screen-printed on the FTO glass 2 thin film layer, followed by screen printing a layer of TiO 2 After the nanocrystalline layer is heated at 450° C. for 30 minutes, a dense layer 12 with a thickness of 50 nm and a porous scaffold layer 13 with a thickness of 500 nm are obtained. Subsequently, a two-step liquid phase method was used to deposit CH into the porous scaffold layer 13 3 NH 3 PB 3 light-absorbing material. First place 1.2M of PbI 2 The DMF solution is spin-coated on the surface of the porous support layer 13 at a speed of 3000rpm, and continuously spin-coated for 30 s After that, it was heated at 90°C for 2 minutes, and then the porous scaffold layer 13 was treated with CH at a concentration of 10 mg / mL. 3 NH 3 Soak in isopropanol solution of I for 10 minutes, and finally heat at 90°C for 45 minutes. Thus, part of C...
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Abstract
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