Undoped small organic molecule hole transport material as well as preparation method and application thereof
A technology of hole transport materials and small molecules, which is applied in the field of non-doped organic small molecule hole transport materials and its preparation, and can solve the problems of poor stability and efficiency improvement of perovskite batteries
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[0051] A method for preparing an undoped organic small molecule hole transport material according to another embodiment of the present invention includes the following steps:
[0052] Dissolve the first reactant, the second reactant and tetrakis (triphenylphosphine) palladium in a solvent, and react at 110-120 ° C for 8-10 h to obtain a crude product;
[0053] Dissolving the crude product, the third reactant, and piperidine in chloroform, and reacting at 60-80° C. for 10-12 hours to obtain an undoped organic small molecule hole transport material;
[0054] Wherein, the structural formula of the first reactant is:
[0055]
[0056] The structural formula of the second reactant is:
[0057]
[0058] The structural formula of the third reactant is:
[0059]
[0060] Specifically, combining figure 2 As shown, in step S1, the first reactant, the second reactant, tetrakis(triphenylphosphine) palladium and toluene are mixed, heated and stirred, and the first reactant and...
Embodiment 1
[0094] The purpose of this embodiment is to prepare an undoped organic small molecule hole transport material, which includes the following steps:
[0095] Step S1: mixing the first reactant, the second reactant, tetrakis(triphenylphosphine) palladium and toluene, heating and stirring to obtain a mixed solution, and extracting and drying the mixed solution to obtain a crude product; specifically including :
[0096] Step S11: In a nitrogen atmosphere, 500 mg of the first reactant, 1 g of the second reactant and the amount of the substance are 0.5% Pd (PPh 3 ) 4 put into a three-necked flask, add 25 mL of toluene, heat to 110° C. and stir for 8 hours to obtain a first mixed solution;
[0097] Step S12: pouring the first mixed solution obtained in step S11 into water, and extracting with dichloromethane to obtain the first organic layer;
[0098] Step S13: Use anhydrous MgSO for the first organic layer obtained in Step S12 4 Drying treatment was carried out to obtain a crude...
Embodiment 2
[0106] The purpose of this embodiment is to provide a perovskite solar cell that combines Figure 4 As shown, the perovskite solar cells described in this example are ZnO (SnO) from top to bottom 2 )-CsPbI 2 Br-G7 material-Spiro-OMeTAD-MoO 3 Layered structure.
[0107] The preparation of perovskite solar cells specifically includes the following steps:
[0108] Step S1: preparing a first electrode, spin-coating a coating solution on the surface of the first electrode, and forming an electron transport layer after annealing, specifically including:
[0109] Step S11: Cut the ITO conductive glass into a size of 2 × 2 cm, use detergent, deionized water, acetone, and isopropanol respectively to ultrasonically clean for 20 minutes, put it in an oven to dry, and then treat it with ultraviolet ozone for 30 minutes to obtain the first step. an electrode;
[0110] Step S12: dissolving zinc acetate and ethanolamine in 10 mL of 2-methoxyethanol solution at a molar mass ratio of 1:1,...
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