Core Viewpoint - LONGi Green Energy has achieved a new record in power conversion efficiency for perovskite/silicon tandem solar cells, reaching 34.58% efficiency through innovative research and development [2][3][7]. Group 1: Company Overview - LONGi Green Energy, established in 2000, is a private solar technology company based in Xi'an, Shaanxi Province, focusing on the development, manufacturing, and sales of semiconductor materials and equipment [2]. Group 2: Research Achievements - The company published a research paper titled "Efficient perovskite/silicon tandem with asymmetric self-assembly molecule" in the prestigious journal Nature, marking its fourth publication in Nature since 2024 [2]. - In addition, LONGi Green Energy published another research paper in the Science journal on June 26, 2025 [2]. Group 3: Technical Innovations - The recent study developed a high-efficiency perovskite/silicon tandem solar cell with an asymmetric self-assembly molecule, achieving a certified power conversion efficiency of 34.58%, setting a new record for this type of solar cell [3][7]. - The research team designed an asymmetric self-assembly monolayer (HTL201) that enhances the efficiency of the tandem solar cells by minimizing steric hindrance and improving coverage on the transparent conductive oxide layer [6]. - The optimization of energy level alignment between the perovskite and HTL201, along with an increase in the quasi-Fermi level splitting (QFLS) of the perovskite layer, resulted in a significant voltage output of nearly 2 volts [7].