[21p-C201-1~11] 6.6 Probe Microscopy

△ [21p-C201-1] STM luminescence measurements of a single phthalocyanine molecule adsorbed on a KBr ultrathin insulator film

〇Kaito Kondo^1,2, Kimura Kensuke¹, Imada Hiroshi¹, Katayama Ikufumi¹, Takeda Jun^1,2, Kim Yousoo¹ (1.Riken SISL, 2.YNU)

Keywords:Scanning Tunneling Microscope, STM luminescence, Single molecule

STM luminescence measurements of a single molecule on an ultrathin insulating film grown on a metal surface enable us to investigate the electronic structure and excited states of an isolated molecule. In this study, we focused on ultrathin insulator films' role in adsorbing a molecule. We prepared KBr ultrathin film on Ag(111) and conducted STM measurements on a phthalocyanine molecule on KBr/Ag(111). By dI/dV and luminescence measurements using STM, we revealed that the phthalocyanine molecule was negatively charged on KBr/Ag(111) and clarified the excited state formation mechanisms of the charged molecule.