Core Insights - The project led by Fujian Provincial Institute of Metrology has successfully developed and tested a transparent solar cell based on tin-based perovskite, achieving original innovations in material design and process technology [1][2] - The transparent solar cells are seen as a significant advancement in the renewable energy sector, allowing for integration into vehicles and building facades, thus expanding application scenarios beyond traditional photovoltaic systems [1][2] Group 1 - The project has applied for a national invention patent for a method of producing transparent perovskite solar cells using a ternary cation absorption layer [1] - Traditional methods for achieving transparency in perovskite solar cells often compromise either light transmittance or light absorption, leading to decreased device performance [1] - Key challenges in the industry include stability issues and the toxicity of lead, which poses environmental and health risks if not properly encapsulated [1] Group 2 - The project team has innovatively replaced lead with tin ions to create a lead-free transparent perovskite solar cell, enhancing both light transmittance and operational stability through various technological innovations [2] - Systematic testing of key performance indicators such as photoelectric conversion efficiency, visible light transmittance, color coordinates, and color rendering index has been conducted to ensure scientific evaluation of the device performance [2] - The project's outcomes provide significant theoretical and technical support for photovoltaic companies, laying the groundwork for commercializing transparent perovskite solar cells suitable for building-integrated photovoltaic systems [2]