A hole transport material based on a carbazole derivative containing a benzene sulfonic acid unit, and a preparation method and use thereof
By preparing a hole transport material based on a carbazole derivative containing benzenesulfonic acid units, the problem of insufficient stability of anchoring groups in perovskite solar cells was solved, improving hole transport capability and device stability. This material is suitable for the hole transport layer of perovskite solar cells.
Patent Information
- Application Number
- CN202410897847.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2044-07-05
AI Technical Summary
In existing perovskite solar cells, the organic molecules using phosphate groups as anchoring groups are not sufficiently anchored on transparent conductive oxides (TCOs), leading to decreased stability.
Carbazole derivatives based on benzenesulfonic acid units were used as hole transport materials. Carbazole sulfonates containing sulfonic acid groups were prepared by substitution, coupling and cooling reflux reaction. The π bond of the benzene ring and the strong acidity of the sulfonic acid group were used for anchoring to form a monomolecular hole transport layer.
It improves hole transport capability, enhances the open-circuit voltage of the device, solves the problem of damage to the crystalline silicon-perovskite stack structure caused by the solution method for preparing the hole transport layer, and achieves efficient hole transport and improved stability.