报告人：Prof. Dr. Uli Lemmer（卡尔斯鲁厄理工学院（KIT））

时 间：2026年05月18日（周一）上午10:00-10:40

地 点：良乡校区 物理实验中心229会议室

摘要：

Solution-processed lasers have evolved from early demonstrations based on organic semiconductors toward highly efficient and wavelength-tunable devices enabled by nanostructured resonators and printable materials. In particular, metal-halide perovskites have opened new opportunities for low-cost, high-gain laser platforms with excellent optical properties and simple fabrication routes. A special focus is placed on distributed feedback (DFB) concepts compatible with additive manufacturing. Inkjet printing enables precise material utilization, digital patterning, and compatibility with flexible and heterogeneous substrates, making it a promising route toward scalable photonic manufacturing. In addition, the presentation addresses fundamental optical processes governing amplified spontaneous emission and lasing in perovskite systems, with particular emphasis on the distinction between collective and cooperative emission effects. Perovskites and inkjet printing also offer a promising combination for novel X-ray detectors. Perovskite semiconductors combine excellent X-ray absorption with high photon-to-charge conversion efficiency. We investigate different device architectures for efficient charge collection and demonstrate triple-cation perovskite X-ray detectors fabricated by digital inkjet printing on mechanically flexible substrates. Such flexibility enables folded (“origami-type”) detector concepts that extend 2D printing into 3D device architectures.

简历：

Professor Uli Lemmer is a full professor at the Karlsruhe Institute of Technology (KIT), Germany. His research has long focused on frontier areas including organic electronics, organic semiconductors, thermoelectric semiconductors, perovskite solar cells and laser devices, as well as nano-optics.

Professor Lemmer currently serves as Director of the Institute of Light Technology and the Institute of Microstructure Technology at KIT, and Dean of the KIT-KSOP Graduate School. He is also the spokesperson for Germany’s Excellence Cluster 3D Matter Made to Order (3DMM2O), one of the country’s leading innovation initiatives in micro- and nanomanufacturing. In addition, he serves as Scientific Managing Director of Innovation Lab Heidelberg, a major German joint innovation and incubation platform for advanced technologies.

As of May 2026, Professor Lemmer has published more than 500 SCI-indexed papers in leading international journals, including Nature Photonics and Physical Review Letters. He has achieved an h-index of 89 on Google Scholar, reflecting his broad and influential contributions to the field.

联系方式：yaoxuri@bit.edu.cn

邀请人：姚旭日

网 址：http:/

承办单位：太阳集团城娱8722、量子技术研究中心