A simple and straightforward approach has been described for the fabrication of CdTe nanotube and nanorod arrays with a high degree of precision through confined electrodeposition on lithographically patterned nanoelectrodes. This technique has the potential of growing these nanotube/nanowire arrays with extreme uniformity over a significantly large area. the desired nanoelectrode pattern was defined through electron beam lithography on indium tin oxide coated glass, and electrodeposition of the semiconducting material of interest (CdTe) on the nanoelecrodes produced the nanotubes/nanowires. It is interesting to note that the measured photocurrent density of nanotube device created by this protocol exceeds that obtained from a thin film device fabricated under similar conditions by several orders of magnitude. the ability to fine tune all the physical dimensions and distribution density of the nanostructures, make this method a versatile tool to fabricate and investigate nano-structured photovoltaic devices and study their structure-property relationship. Additionally the ability to create uniform nano-feature arrays in addition to nanotube/nanorod arrays through one-step electrodeposition makes this protocol unique.
W. P. Liyanage and M. Nath, "Growth of Ordered Nanostructure Arrays Including Nanotubes and Nanorods for High Efficiency Solar Cells," ECS Transactions, vol. 66, no. 40, pp. 1-7, Electrochemical Society Inc., May 2015.
The definitive version is available at https://doi.org/10.1149/06640.0001ecst
Symposium on Nanotechnology General Session - 227th ECS Meeting (May 24-28, Chicago, IL)
Keywords and Phrases
Cadmium Telluride; Electrodeposition; Electrodes; Electron Beam Lithography; ITO Glass; Nanorods; Nanostructures; Nanotubes; Semiconducting Glass; Semiconducting Indium; Solar Cells; Thin Film Devices; Tin Oxides; Yarn; Distribution Density; High-Efficiency Solar Cells; Indium Tin Oxide Coated Glass; One-Step Electrodepositions; Ordered Nanostructure Arrays; Photocurrent Density; Semiconducting Materials; Structure Property Relationships; Nanotechnology
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