Transport and structural characterization of solution-processable doped ZnO nanowires

Rodrigo Noriega, Ludwig Goris, Jonathan Rivnay, Jonathan Scholl, Linda M. Thompson, Aaron C. Palke, Jonathan F. Stebbins, Alberto Salleo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

The use of ZnO nanowires has become a widespread topic of interest in optoelectronics. In order to correctly assess the quality, functionality, and possible applications of such nanostructures it is important to accurately understand their electrical and optical properties. Aluminum- and gallium-doped crystalline ZnO nanowires were synthesized using a low-temperature solution-based process, achieving dopant densities of the order of 1020 cm-3. A non-contact optical technique, photothermal deflection spectroscopy, is used to characterize ensembles of ZnO nanowires. By modeling the free charge carrier absorption as a Drude metal, we are able to calculate the free carrier density and mobility. Determining the location of the dopant atoms in the ZnO lattice is important to determine the doping mechanisms of the ZnO nanowires. Solid-state NMR is used to distinguish between coordination environments of the dopant atoms.
Original languageEnglish (US)
Title of host publicationNanoscale Photonic and Cell Technologies for Photovoltaics II
PublisherSPIE-Intl Soc Optical Eng
ISBN (Print)9780819477019
DOIs
StatePublished - Aug 18 2009
Externally publishedYes

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