研究目的
To develop a novel strategy for depositing high-quality CsPbBr3 films for efficient and stable perovskite solar cells.
研究成果
The study successfully demonstrated the deposition of high-quality CsPbBr3 films using a porous CsPb2Br5 intermediate layer, leading to efficient and stable carbon-based perovskite solar cells. The devices showed high stability under ambient and thermal stress conditions.
研究不足
The study focuses on CsPbBr3 films and their application in carbon-based perovskite solar cells, which may limit the generalizability to other perovskite materials or device architectures.
1：Experimental Design and Method Selection:
A novel strategy was developed to deposit high-quality CsPbBr3 films by employing a porous CsPb2Br5 film as an intermediate layer.
2：Sample Selection and Data Sources:
Pb–Br precursor layers were immersed in a low-concentration CsBr IPA solution to obtain highly porous CsPb2Br5 films.
3：List of Experimental Equipment and Materials:
FTO glass, TiO2 blocking layer, mesoporous TiO2 layer, PbBr2 solution, CsBr solution, carbon paste.
4：Experimental Procedures and Operational Workflow:
The Pb–Br precursor films were spin-coated onto mesoporous TiO2 layers, then dipped into CsBr–IPA solution, followed by immersion in a high-concentration CsBr solution and annealing.
5：Data Analysis Methods:
Surface and cross-section morphologies were observed using FESEM, XRD patterns were collected, absorption spectra were measured, PL spectra were obtained, and AFM was used for surface roughness characterization.
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