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DS: Fachverband Dünne Schichten

DS 27: Organic Thin Films II

DS 27.13: Talk

Wednesday, April 2, 2014, 18:15–18:30, CHE 91

Organic surface nano-patterns prepared by using nano-porous templates — •Yan Zheng, Wenxin Wang, Ahmed Al-Haddad, Huaping Zhao, Chengliang Wang, and Yong Lei — Ilmenau University of Technology, Institute of Physics & IMN MacroNano* (ZIK) Prof. Schmidt-Str. 26, 98693 Ilmenau (Germany)

Tris(8-hydroxyquinoline) aluminum (Alq3) is an organic semiconductor which attracted considerable attention for the applications in optical and electrical devices. Nanostructured metallic surface associated with organic semiconductor molecule can result unique electronic and optical properties. In this work, large area of Alq3 nanoparticle pattern with high uniformity and periodicity was successfully prepared using ultra-thin alumina membranes (UTAMs) through organic molecular sublimation under ultrahigh vacuum conditions. The various photoluminescence properties of Alq3 nanoparticle pattern can be realized from the particle diameters by adjusting the pore size of the alumina template. Enhanced photoluminescence was observed when Alq3 deposited onto metallic nanoparticle arrays. The PL enhancement of Alq3 material covered on metallic nanoparticle arrays could be attributed to the increased absorption and quantum yield of surface plasmon resonance. All the results indicate that the controllable highly ordered Alq3 nanoparticle pattern, which is based on the low cost and convenient method of UTAMs template-directed by organic molecular sublimation with PL enhancement performance, has potential applications in nano-optoelectronic devices.