Atomic-scale study of optical property of transition metal dichacogenides

Walen博士使用STM、LEED和XPS在镍和铜表面制备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在光学和电子上将单个分子与下面的金属底物分离的能力。结果表明，h-BN对光去耦是无效的。因此，实验方法发生了变化，Walen博士开始分析由我们的合作者制备的许多不同底物上的过渡金属二硫化物样品。我们一直在与这三所大学的教授密切合作，为她的项目描述许多示例系统。

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.