Core Insights - The research teams from Nanjing University and the National Defense Science and Technology Innovation Research Institute have achieved a breakthrough in perovskite solar cell technology, with a power conversion efficiency exceeding 30%, as published in the prestigious journal Nature on October 28 [1][5]. Group 1: Technological Advancements - The newly developed non-contact, non-destructive terahertz radiation detection technology effectively addresses the challenges in accurately detecting and controlling charge carriers in perovskite materials [3]. - The terahertz photons possess sub-bandgap energy characteristics, allowing for specific detection of free carrier concentration in perovskite without causing interband transition interference [3]. - The research identified that the interface between the perovskite light-absorbing layer and the hole transport layer is a significant area of carrier loss, leading to the design of a dipole passivation layer to enhance carrier movement [3]. Group 2: Performance Metrics - The newly developed perovskite solar cells, utilizing the passivation treatment technology, achieved a power conversion efficiency of 30.1%, marking the first time this efficiency threshold has been surpassed for such cells [5]. - Experimental data indicated that the passivated perovskite films exhibited over a 68% increase in total carrier mobility and nearly a 30% extension in carrier diffusion length [3][5]. Group 3: Future Implications - The research highlights the unique advantages of terahertz spectroscopy in revealing intrinsic physical properties of charge carriers, providing a new technical pathway for designing efficient materials in the future [5].