研究目的
To present a mesoscopic solar cell device produced under ambient air/temperature conditions and relatively high humidity, based on methylamine and phenethylamine quasi-2D/3D perovskites, aiming for stability and efficiency under non-controllable conditions.
研究成果
The MIXED/Q10 perovskite demonstrated high efficiency (13.22% PCE) and stability under ambient conditions, making it a promising material for perovskite solar cells. The study highlights the potential for producing efficient solar cells without the need for controlled environments.
研究不足
The study acknowledges the relatively low fill factors of the devices, attributed to the ambient conditions growth of perovskites. The exact thickness of the perovskite films was difficult to measure due to penetration into the mesoporous layer.
1：Experimental Design and Method Selection
The study utilized a simple spin coating technique for depositing all layers under ambient conditions (40–60% relative humidity). The active material was based on methylamine, phenethylamine, lead(II) iodide, and lead(II) chloride, with Li-TFSI as a dopant and P3HT as the hole-transport material.
2：Sample Selection and Data Sources
The samples were fabricated using FTO glass as a substrate, with layers of c-TiO2, mp-TiO2, Li-TFSI, perovskite, and P3HT, topped with gold back contacts.
3：List of Experimental Equipment and Materials
FTO glass, Hydrochloric acid, Zinc dust, Ethanol, n-propanol, Titanium(diisopropoxide) bis(2,4-pentanedionate), Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol), Acetic acid, Titanium(IV) butoxide, Acetonitrile, Methylamine, 2-phenethylamine, Hydroiodic acid, Diethyl ether, Lead(II) iodide, Lead(II) chloride, N,N dimethylformamide, Chlorobenzene, Poly(3-hexylthiophene-2,5-diyl), Bis(trifluoromethane)sulfonimide lithium salt, 4-tert butylpyridine, Gold wire.
4：Experimental Procedures and Operational Workflow
The process involved etching and cleaning FTO glass, depositing c-TiO2 and mp-TiO2 layers, doping with Li-TFSI, depositing perovskite layers, and finally applying P3HT and gold contacts. All steps were performed under ambient conditions.
5：Data Analysis Methods
Characterization included XRD for crystallinity, SEM for morphology, EDXRF for elemental composition, UV-Vis/NIR for absorption, FTIR for chemical bonds, TGA for thermal stability, and electrical measurements for device performance.
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