成都电子科技大学发表最新Science论文

Core Viewpoint - The latest research on perovskite/silicon tandem solar cells has achieved a power conversion efficiency exceeding 34%, while addressing stability issues related to thermal degradation of the hole-selective contact layer [2][4][5]. Group 1: Research Findings - The study identifies that the primary performance loss in advanced tandem architectures is due to the degradation of the fill factor, particularly from the thermal degradation of the hole-selective molecular contact layer [4]. - Traditional monomer contact layers experience a sixfold increase in resistance under high-temperature conditions due to thermally induced structural disorder [4]. - The research team developed an in-situ cross-linked molecular contact layer based on Schiff base to stabilize the interface structure, resulting in a certified efficiency of 33.61% for the solar cells [5]. Group 2: Performance Metrics - A 1 cm² perovskite/silicon tandem solar cell achieved a power conversion efficiency of over 34% [5]. - After approximately 1200 hours of maximum power point operation at 65°C under AM1.5G standard illumination, three independent devices maintained 96.2 ± 1.7% of their initial performance [5].