我国下一代光伏技术取得新进展 光电转化效率突破30%

Core Insights - China's next-generation photovoltaic technology has made significant progress with the development of a perovskite tandem solar cell achieving a power conversion efficiency of over 30%, as published in the prestigious journal Nature on October 28 [1][2] Group 1: Technological Advancements - The research teams from Nanjing University and the National Defense Science and Technology Innovation Research Institute utilized terahertz technology for precise, non-destructive detection of carrier transport behavior in perovskite solar cells [1] - The newly developed perovskite tandem solar cell has achieved a power conversion efficiency of 30.1%, marking the first time this efficiency threshold has been surpassed for such cells [2] Group 2: Research Findings - The study identified that the interface between the perovskite light-absorbing layer and the hole transport layer is a significant area for carrier loss [1] - A dipole passivation layer was designed to facilitate carrier movement from the perovskite layer to the hole transport layer, effectively reducing losses [1] Group 3: Performance Metrics - Experimental data showed that the carrier mobility of the passivated perovskite films increased by over 68%, and the carrier diffusion length extended by nearly 30% [2] - The new perovskite tandem solar cell has been certified by an international third-party organization and is now included in the International Solar Cell Efficiency Table [2]