Published In

Applied Physics Letters

Document Type

Article

Publication Date

12-1-2004

Subjects

Nanowires, Light emitting diodes, Particles (Nuclear physics)

Abstract

We report room-temperature, white-color electroluminescence in vertically oriented ZnO nanowires. Excitonic luminescence around 380 nm is observed as a shoulder on a broader defect-related band covering all of the visible range and centered at 620 nm. The ZnO nanowires are grown in a low-temperature process on SnO2-coated glass substrates, employing a technique that is suitable for large-area applications. The nanowires are robustly encapsulated in a thin polystyrene film deposited from high-molecular-weight solutions. Electron injection occurs through the transparent SnO2 layer, while hole injection is mediated by a p-doped polymer and an evaporated Au contact. Stable device operation is observed at ambient conditions on the time scale of 1 h.

Description

This is the publisher's final pdf. Article appears in Applied Physics Letters (http://apl.aip.org/) and is copyrighted (2004) by the American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

DOI

10.1063/1.1836873

Persistent Identifier

http://archives.pdx.edu/ds/psu/7257

Included in

Physics Commons

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