Dresden 2009 – scientific programme

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SYOP: Symposium Organic Photovoltaics: From Single Molecules to Devices

SYOP 4: Organic Photovoltaics: from Single Molecules to Devices

SYOP 4.31: Poster

Thursday, March 26, 2009, 16:30–19:00, P1A

Electronic properties of potassium doped CoPc and FePc — •Olga Molodtsova¹, Martin Knupfer¹, Alexander Chaika², Denis Vyalikh³, Alexei Preobrajenski⁴, and Victor Aristov^{1, 2} — ¹IFW Dresden, D-01069 Dresden, Germany — ²ISSP RAS, Chernogolovka, 142432 Russia — ³IFP, TU Dresden, D-010169 Dresden, Germany — ⁴MAX-Lab, 22100 Lund, Sweden

Magnetic transition metal (MTM) phthalocyanines are interesting due to their many different potential applications. In particular, FePc and CoPc are often utilized in optoelectronics and medical applications. Nowadays such phthalocyanines are considered as materials for development of low dimensional molecular magnets and quantum computers. To make further progress in development of this and other similar kinds of devices both the understanding and the tailoring of the physical, chemical and transport properties of the organic semiconductor components are required. The later is based on information about their electronic structure. Moreover the ability to incorporate electron acceptors and donors into molecular crystals enables the control of their electronic properties by introducing charge carriers. This special aptitude represents a promising route for technology as well as for the investigation of the fundamental properties of molecular crystals. In this work we have studied the electronic properties of potassium-doped organic semiconductor MTM phthalocyanines thin films CoPc and FePc using photoelectron spectroscopy. Acknowledgements: This work was supported by the DFG (no.436RUS17/52/06), SFB 463 and RFBR (Grant N°08-02-01170).