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HL: Fachverband Halbleiterphysik

HL 92: Poster Session: II-VI Semiconductors & ZnO and related Materials

HL 92.5: Poster

Donnerstag, 29. März 2012, 16:00–19:00, Poster D

Connecting ZnO nanowires for light emitting devices. — •Yaser Haj Hmeidi, Rapheal Niepelt, Martin Gnauck, Frank Schmidl, and Carsten Ronning — Institut für Festkörperphysik, Universität Jena, Max-Wien-Platz 1, 07743 Jena

ZnO nanowires can be easily grown via vapor-liquid-solid (VLS) mechanism and are suitable for optoelectronic applications. Furthermore, they have an emission wavelength in the UV region. We developed a simple and powerful approach on basis of spin-on-glass SiO2 [1]. This approach is intrinsically scalable since every step involved can be carried out in parallel over an entire wafer. The challenge in this particular geometry is the fabrication of top metallic contacts to the nanowires in a way that the contact dose not short. In this presentation, we will demonstrate how this approach can be utilized for assembling ZnO nanowires devices. These light emitting devices are based on p-n heterostructure between ZnO nanowires and highly doped substrate. The obtaining devices show rectifying properties and under certain conditions, also light emission.