Dresden 2017 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 44: Postersession II
DS 44.19: Poster
Donnerstag, 23. März 2017, 17:00–19:00, P1C
Self-Assembly of Di-lithium Phthalocyanine on Different Surfaces — •nhung n.t.t.1,3, lars s.2, ha n.t.n.2, and michael h.2 — 1IFW Dresden — 2TU-Chemnitz — 3Duy Tan University, Vietnam
Metal phthalocyanines (MPc) behave as semiconductors in their pure form. Therefore doping MPc thin films by oxidizing the ligands and creating an open shell can considerably increase their electrical conductivity [1-2]. These doped organic thin films may play an crucial role in developing new effective materials for nano-devices like insulator-metal-insulator transistor [3] or light emitting devices [4].
In addition, self-assembly structures of di-lithium phthalocyanine (Li2Pc), which have been used as electrolyte in an all-solid state electrochemical cell, lead to a pronounced electric field dependence of the lithium ion transport in channel formation process [5].
Here the self-assembly of Li2Pc on different crystalline surfaces will be investigated by means of scanning tunneling microscopy (STM) in ultra-high vacuum. In the first part Li2Pc is grown by organic molecular beam deposition (OMBD) on Au(111) surface to prepare a crystalline thin film. To get more information on the adsorption process, a small amount of this molecule has been doped at the F16CoPc thin films on Au(111) and HOPG substrates. STM results collected at low temperatures as well as molecular manipulating of Li2Pc by applying voltage pulses to the STM tip illustrate the deposition behavior of Li2Pc. All of the research was performed in TU-Chemnitz.