Atomic-scale study of optical property of transition metal dichacogenides

Walen博士使用STM、LEED和XPS在镍和铜表面上制造并分析了单层绝缘六方氮化硼。将单个酞菁分子吸附到h-BN上以确定h-BN将单个分子与下面的金属基底光学和电子隔离的能力。结果发现，h-BN对光学退耦无效。因此，我们改变了实验方法，Walen博士开始分析我们合作者制备的多种不同基底上的过渡金属二硫属化物样品。我们一直与这三所大学的教授密切合作，为她的项目描述许多样品系统的特征。

Dr. Walen fabricated and analyzed single-layer insulating hexagonal boron nitride on nickel and copper surfaces using STM, LEED, and XPS. Single phthalocyanine molecules were adsorbed to the h-BN to determine the ability of the h-BN to optically and electronically isolate single molecules from the underlying metal substrate. It turned out that the h-BN was ineffectual for optical decoupling.Thus, the experimental approach was changed, and Dr. Walen began analyzing transition metal dichalcogenide samples on many different substrates, prepared by our collaborators. We have been working closely with professors from these three universities to characterize many sample systems for her project.