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O: Oberflächenphysik
O 32: Nanostrukturen III
O 32.5: Vortrag
Donnerstag, 11. März 2004, 12:15–12:30, H38
Preparation and Characterization of regularly arranged
diamond field emitters using gold nanomasks — •Frank Weigl1, Oliver Pursche1, Christof Dietrich1, Berndt Koslowski1, Alfred Plettl1, Hans-Gerd Boyen1, Paul Ziemann1, Silke Riethmüller2, Christoph Hartmann2 und Martin Möller2 — 1Abteilung Festkörperphysik, Universität Ulm, D-89069 Ulm — 2Abteilung Organische Chemie III, Universität Ulm, D-89069 Ulm
Small structures showing field emission are of great importance for new electron sources, e. g. for flat panel displays. We present a novel method to produce regularly arranged uniform diamond field emitters exploiting gold nanoparticles as etching masks. Inverse diblock copolymer micelles loaded with gold salt are deposited onto boron doped (001)-oriented diamond substrates resulting in a hexagonally ordered monomicellar film. In a subsequent plasma step the polymer is removed and pure gold particles are obtained while maintaining the hexagonal order of the micellar array [1]. In a subsequent anisotropic etching step uniform diamond tips with a height of 45nm and a diameter of 10nm (FWHM) are prepared. Their emission properties are investigated using a standard diode setup as well as scanning tunnelling microscopy and spectroscopy.
[1] G. Kästle et al., Adv. Func. Mat., 13, 853 (2003)