To achieve the conversion of non-toxic metals like gold and copper into metal-halide perovskites (HaPs) for solar applications, we propose a comprehensive solution focused on optimizing key parameters and techniques. The process will begin by fine-tuning the precursor solution composition, reaction time, temperature, and pH to improve conversion efficiency, with an emphasis on dipping and spin coating techniques to ensure reproducibility and uniform crystal formation. Critical to this approach is understanding and controlling the oxidation states and reaction mechanisms of gold and copper during conversion.
We will also ensure the compatibility and stability of metal-HaP films with other solar cell components, developing encapsulation strategies to protect against environmental degradation. Advanced analytical techniques like X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and photoluminescence (PL) will be used for detailed film analysis. To enhance performance and scalability, we will employ dual-layer structures for improved stability, explore protective layers to prevent degradation, and consider alternative halogens such as bromine or chlorine to validate structural integrity. Automated systems will ensure consistent solution preparation and mixing, and advanced computer simulations will reduce the need for physical experiments. This integrated approach aims to produce efficient, environmentally friendly solar cells using scalable, high-quality HaP films.
Anatoly Agulyansky
Excellent analysis, a lot of ideas generated from 40 Inventive Principles, Functional Model seems very detailed.
The project addresses instability in the dissolution of tantalum (Ta) anodes in hydrofluoric acid (HF), where hydrogen gas generated during the reaction becomes trapped in the solution, forming foam that disrupts the process and creates safety risks. Using the PRIZ Platform, a Functional Model of the system was developed. The model revealed that the HF solution is both the most functional and the most problematic component, leading to a physical contradiction: HF must interact with Ta anodes to enable dissolution, but must not retain the hydrogen gas produced during the reaction. Applying the PRIZ principle of Separation in Space, two reactor concepts were proposed: a spray interaction reactor, where HF is pumped to spray onto anodes placed above the solution, and a surface wetting reactor, where anodes are positioned at the top of the solution, allowing natural circulation and easy hydrogen release. Both designs eliminate foam formation and provide a stable, controllable, and safer dissolution process.
Chilled water is used for production equipment cooling. Suddenly pH of the water started to drop. The aim of the project is to analyze the issue, understand the root cause, and propose solutions to the problem.
?כיצד נוכל למנוע הצטברות של אדים על גבי העדשה בתנאי סביבה שונים כדי לשפר את הראייה והבטיחות