厦门大学×西安交通大学合作发表最新Science论文

Core Viewpoint - Perovskite solar cells are gaining attention due to their high efficiency, simple manufacturing process, and low cost, but the heat annealing process can induce crystal defects that limit their performance and stability [2][4]. Group 1: Research Findings - A new solid-state Molecular Press Annealing (MPA) strategy has been proposed, which involves imprinting a dense layer of pyridine-based molecular template on the perovskite surface during the heat annealing process, allowing for real-time repair of iodine vacancies and stabilization of the lead-iodine framework [5][6]. - The MPA strategy enhances the structural integrity and long-term stability of perovskite films, addressing the limitations caused by traditional heat annealing [5]. Group 2: Performance Metrics - The n-i-p structured perovskite solar cells fabricated using the MPA strategy achieved a power conversion efficiency (PCE) of 26.6% for small area devices (0.08 cm²) and 24.9% for 1 cm² devices, maintaining 23.0% efficiency for 16 cm² modules [7]. - The devices demonstrated exceptional durability, retaining 98.6% and 97.2% of their initial efficiency after 1617 hours of continuous operation at maximum power point and 5280 hours of atmospheric storage, respectively [7].