研究目的
Investigating the role of phenethylamine iodide as a novel anti-solvent for enhancing the performance of inverted planar perovskite solar cells.
研究成果
The study concludes that the use of PEAI as an anti-solvent significantly enhances the structural and optoelectronic properties of RbCsFAMA perovskite films, leading to a notable increase in the Voc of the devices. This method is found to be more beneficial than post-treatment passivation, attributed to the microscopic structure and orientation of grains in the perovskite films, combined with the passivation effect of trap states. The PEAI-treated PSCs also exhibited enhanced moisture resistance, retaining ~80% of their initial PCE after 500h of storage in dark conditions.
研究不足
The study acknowledges the need for optimization of device fabrication and processing of the high crystalline perovskite absorber for reliable device performance. Additionally, further investigations are required to understand the dependence of performance and defect states on the control of crystal growth direction.
1：Experimental Design and Method Selection:
The study involved the fabrication of inverted perovskite solar cells (PSCs) with a planar configuration structured as indium tin oxide (ITO) glass substrate/poly(trimethyl amine) (PTAA)/RbCsFAMA/PC70BM/bathocuproine (BCP)/Ag. The quadruple cation perovskite composition was Rb0.04Cs0.05[(FA0.85MA0.15)]0.9Pb(I0.85Br0.15)3. The experimental details included the use of phenethylammonium iodide (PEAI) in butanol treatment in the anti-solvent step during perovskite formation, compared with control devices using chlorobenzene (CB) as the anti-solvent.
2：04Cs05[(FA85MA15)]9Pb(I85Br15)The experimental details included the use of phenethylammonium iodide (PEAI) in butanol treatment in the anti-solvent step during perovskite formation, compared with control devices using chlorobenzene (CB) as the anti-solvent.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The samples were perovskite films treated with PEAI in the anti-solvent step and control films treated with CB. Data sources included X-ray Diffraction (XRD) measurements, atomic force microscope images, water contact angle measurements, and steady-state photoluminescence (PL) measurements.
3：List of Experimental Equipment and Materials:
The materials used included ITO glass substrates, PTAA, RbCsFAMA perovskite, PC70BM, BCP, and Ag. Equipment included XRD diffractometers, atomic force microscopes, and PL measurement setups.
4：Experimental Procedures and Operational Workflow:
The procedure involved the fabrication of PSCs with and without PEAI treatment, followed by characterization using XRD, AFM, contact angle measurements, and PL to assess the structural and optoelectronic properties of the films.
5：Data Analysis Methods:
The analysis involved comparing the performance of PEAI-treated devices with control devices, focusing on Voc, Jsc, FF, and PCE, as well as stability tests under ambient conditions.
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