新材料显著提升钙钛矿太阳能电池效率

Core Insights - The research team from the Changchun Institute of Applied Chemistry has made significant breakthroughs in the design of new organic self-assembling molecular materials for perovskite solar cells, enhancing their efficiency, stability, and uniformity in large-area processing [1][2][3] Group 1: Research Breakthroughs - A new type of double radical self-assembling molecular material has been developed, which shows high efficiency, stability, and excellent dispersion, significantly improving the photoelectric conversion efficiency of perovskite solar cells [1][2] - The new material exhibits a carrier transport rate more than twice that of traditional materials and demonstrates exceptional stability under simulated working conditions, with minimal performance degradation after thousands of hours of operation [2][3] Group 2: Technical Innovations - The introduction of a receptor conjugate design strategy has led to a self-assembling molecule with a spin concentration nearly three orders of magnitude higher than traditional self-assembling molecules, enhancing carrier transport capabilities [2] - The unique design of steric groups effectively suppresses molecular stacking phenomena, achieving high uniformity in large-area solution processing, which is crucial for the advancement of perovskite photovoltaic technology [2][3] Group 3: Performance Metrics - The efficiency of the perovskite solar cells using the new material has reached world-class levels, with small-area devices achieving a photoelectric conversion efficiency of 26.3%, micro-components at 23.6%, and perovskite-silicon tandem cells exceeding 34.2% [2] - The new materials and devices exhibit superior stability, maintaining performance levels far beyond those of traditional materials and devices [2][3]