报告主题：Understanding and Advancing Perovskite Materials toward Stable and Efficient Optoelectronics

报告人：Elke Debroye教授

报告时间：2026年3月25日下午3：00

报告地点：材料科学与工程学院教学楼207报告厅

报告人简介：Elke Debroye，比利时鲁汶大学化学系教授。研究方向为半导体材料光谱学和先进显微表征技术，主要从事金属卤化物钙钛矿材料与器件的光物理机制等研究。Elke教授已经在钙钛矿领域发表70余篇学术论文，累计影响因子达到1100。自2023年起主持欧盟多项基金项目，致力于开发超快光谱技术，用于研究新型无铅钙钛矿材料，面向下一代高稳定x射线成像与能源应用。

报告内容：Metal halide perovskites have emerged as a highly promising class of semiconductors for optoelectronic applications due to their exceptional light absorption, tunable emission, and efficient charge transport. These cost-effective materials have demonstrated an unprecedented rise in solar power conversion efficiency, surpassing 25% within a decade, outpacing conventional silicon photovoltaics. However, fundamental insights into their intrinsic photophysical properties remain incomplete, yet are crucial for further performance enhancements. Additionally, while the impressive efficiency of novel perovskite materials is often emphasized, their long-term stability is equally vital for practical implementation.

In this talk, I will present the development of perovskite systems with diverse compositions, structures, and morphologies using various synthesis strategies. By employing advanced spectroscopic techniques, we elucidate the interplay between crystalline structure and charge carrier dynamics that dictate their optoelectronic performance. Additionally, photoluminescence (PL) microscopy imaging is being exploited correlating materials’ photochemistry and intrinsic defects to optoelectronic device performance, providing direct insight into their function in real-world applications. I will demonstrate how chemical micro-engineering can optimize perovskite stability and functionality, with a focus on improving X-ray detection performance. Finally, I will present strategies for fabricating high-quality photoactive layers, including controlled film deposition, as critical components for next-generation stable optoelectronics.