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Verified CAS / Academic Author2 Decoded Studies

Prof. SUN Hong

Nanjing University

Co-Affiliations:Tianjin University

Research Publications & English Decoded Briefs

Showing 2 publications
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3788-9

Stable δ-FA(Cs)PbI3 Intermediate Enables Fabrication of Large-Area Perovskite Solar Modules in Ambient Air

Fabrication of large-area perovskite solar modules under ambient air conditions remains a critical challenge due to air sensitivity of perovskite intermediate phases during crystallization. Here, we introduce 2-iodoimidazole (IIZ) into the perovskite precursor, enabling the formation of an air-stable pure δ-phase intermediate, which, upon annealing, fully transforms into a highly oriented α-phase perovskite film with reduced defects and variability. Leveraging this approach, we achieve a stabilized power conversion efficiency of 20.9% for 927.5 cm2 perovskite solar modules with high reproducibility. The encapsulated modules meet stringent international photovoltaic testing standards (IEC61215:2021), demonstrating excellent stability under continuous operation, thermal cycling (−40 to 85 °C) and damp heat (85 °C and 85% relative humidity).

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SCIENCE CHINA Materials•2025•DOI: 10.1007/s40843-025-3619-1

A Dual-Dynamically Crosslinked Hydrogel for Cardiac Repair with Microenvironment Regulation and Angiogenic Functions

Inflammation and ischemic microenvironments represent significant challenges in cardiac repair. To address these issues, a series of dual-dynamically crosslinked alginate-based hydrogels (SA-PBA/E/Sr) containing strontium ions (Sr2+) and epigallocatechin gallate (EGCG) were developed, demonstrating microenvironment modulation and angiogenic capabilities in the myocardial infarction (MI) microenvironment. In the SA-PBA/E/Sr hydrogel system, alginate modified with aminophenylboronic acid (PBA) was synthesized to form boronic acid ester bonds with EGCG and an ionic coordination network with Sr2+ ions. The resulting hydrogel exhibits excellent injectability due to its dual-dynamically crosslinked structure, with its formation and mechanical properties being tunably modulated by the PBA substitution degree, EGCG concentration, and Sr2+ content. The incorporation of EGCG enables the hydrogel to efficiently scavenge reactive oxygen species (ROS) and mitigate oxidative stress-induced cellular damage under hypoxia. Furthermore, the introduction of Sr2+ significantly enhances the migratory capacity of endothelial cells, a critical factor in angiogenesis. In vivo experiments revealed that the injection of SA-PBA/E/Sr hydrogel into the infarcted myocardium of Sprague-Dawley (SD) rats led to reduced ROS levels, alleviated inflammatory responses, suppression of pro-inflammatory M1 macrophage expression, enhancement of anti-inflammatory M2 macrophage expression, and accelerated neovascularization in the damaged tissue. Echocardiographic and histological analyses demonstrated a remarkable increase in ejection fraction and a decreased infarct size, collectively indicating significant cardiac functional recovery.

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