Square acid type organic small-molecular hole transport material and application thereof
A technology of hole transport materials and small molecules, applied in the field of squarylium organic small molecule hole transport materials, can solve the problems of unfavorable π-π stacking, small interaction force, unfavorable hole transport, etc., and achieve good stability , The synthesis process is simple, and the raw materials are cheap and easy to obtain
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] A preparation method of squarylium organic small molecules, the reaction process is as follows, and the specific steps are as follows:
[0029]
[0030] (1) Add squaraine (11.4g) and thionyl chloride (21g) into a three-necked flask at a molar ratio of 1:2.1, add catalyst DMF, heat up to 50°C and reflux, and react under these conditions for 12 hours; then evaporate Remove thionyl chloride, add bromobenzene (21g) twice the amount of squaraine, and anhydrous aluminum chloride (8.5g) catalyst, heat up to 40°C, reflux for 12 hours; cool to room temperature after the reaction , and then the reaction solution was poured into ice water for quenching, and then extracted with dichloromethane; the extracted organic phase was dried with anhydrous magnesium sulfate, evaporated under reduced pressure, and then recrystallized with absolute ethanol to obtain compound 3.
[0031] (2) Add compound 3, 4-boronate-4', 4'-dimethoxytriphenylamine, lye and ethanol to the reaction solvent, c...
Embodiment 2
[0036]In a 100mL three-necked flask, add N,N-bis(4-methoxyphenyl)-[1,1'-biphenyl]-4-amine (152.5mg, 0.40mmol), squaraine (61.9mg, 0.21mmol), benzene: n-butanol = 1:1 (v / v) (60mL), connected to the water separator, heated at 80°C under the protection of N2, and refluxed for 22h. During the reaction, the color of the reaction solution gradually deepened and solids were precipitated. After the reaction was completed, it was cooled to room temperature, extracted, passed through a column, and recrystallized to obtain a squarylium organic small molecule—compound 6. The compound has a hole mobility of 1.9×10 -3 cm 2 V -1 the s -1 .
[0037]
experiment example 3
[0039] The squarylium organic small molecules synthesized in Examples 1 and 2—compound 5 and compound 6 were respectively used as hole transport materials in formal devices of perovskite solar cells, and their specific structures were FTO / c-TiO 2 / m-TiO 2 / Perovskite / HTM / Au, the schematic diagram of its structure is shown in Figure 4 As shown, using a xenon lamp solar simulator, the test light source intensity is AM1.5G (100mW cm -2 ) to test the photovoltaic performance of the prepared perovskite solar cell, the J-V curve of the device is as follows Figure 5 As shown, the PCE can reach up to 19.32% and 19.85%.
[0040] When the above squarylium small molecules are used as hole transport materials for perovskite solar cells, the device combination is not limited to the above examples, and other material layers in the device can be conventional solar cell materials.
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More