Solar cell and organic semiconductor material
A technology of solar cells and organic semiconductors, applied in the field of solar cells, can solve the problems of poor high-temperature durability of solar cells
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Embodiment 1
[0133] (1) Fabrication of a laminated electrode / electron transport layer / photoelectric conversion layer / counter electrode
[0134] On a glass substrate, an FTO film having a thickness of 1000 nm was formed as an electrode, and each of pure water, acetone, and methanol was ultrasonically cleaned for 10 minutes in order, and then dried.
[0135] On the surface of the FTO film, a titanium isopropoxide ethanol solution adjusted to 2% was applied by spin coating, followed by firing at 400° C. for 10 minutes to form a thin-film electron transport layer with a thickness of 20 nm. Further, on the film-like electron transport layer, after coating a titanium oxide paste containing polyisobutyl methacrylate as an organic binder and titanium oxide (a mixture of average particle diameters of 10 nm and 30 nm) by spin coating, Baking was carried out at 500° C. for 10 minutes to form a porous electron transport layer having a thickness of 500 nm.
[0136] On the other hand, the lead iodide-d...
Embodiment 2～5、 comparative example 1～3
[0145] As shown in Table 1, a solar cell was obtained in the same manner as in Example 1 except that a hole transport layer and a sealing resin layer were formed.
[0146]
[0147] The solar cells obtained in Examples 1 to 5 and Comparative Examples 1 to 3 were evaluated as follows. The results are shown in Table 1.
[0148] (1) Photoelectric conversion efficiency
[0149] Connect a power supply (manufactured by KEITHLEY Co., Ltd., model 236) between the electrodes of the solar cell, and use an intensity of 100mW / cm 2 The photoelectric conversion efficiency was measured with a solar simulator (manufactured by Yamashita Denso Co., Ltd.), and the obtained photoelectric conversion efficiency was regarded as the initial conversion efficiency, and evaluated according to the following criteria.
[0150] ○: The value of the initial photoelectric conversion efficiency is 10% or more
[0151] ×: The value of the initial photoelectric conversion efficiency is less than 10%
[0152...
Embodiment 6
[0160] On a glass substrate, an FTO film having a thickness of 1000 nm was formed as an electrode, and each of pure water, acetone, and methanol was ultrasonically cleaned for 10 minutes in order, and then dried.
[0161] On the surface of the FTO film, a titanium isopropoxide ethanol solution adjusted to 2% was applied by spin coating, followed by firing at 400° C. for 10 minutes to form a thin-film electron transport layer with a thickness of 20 nm. Further, on the film-like electron transport layer, a titanium oxide paste containing polyisobutyl methacrylate as an organic binder and titanium oxide (a mixture of an average particle diameter of 10 nm and 30 nm) was coated by a spin coating method. Thereafter, it was fired at 500° C. for 10 minutes to form a porous electron transport layer having a thickness of 500 nm.
[0162] On the other hand, the lead iodide-dimethyl sulfoxide complex was prepared by reacting lead iodide and dimethyl sulfoxide (DMSO) in advance, and the le...
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