Spatioselective Electrochemical and Photoelectrochemical Functionalization of Silicon Microwires with Axial p/n Junctions

Alexander Milbrat; Rick Elbersen; Recep Kas; Roald M Tiggelaar; Han Gardeniers; Guido Mul; Jurriaan Huskens

doi:10.1002/adma.201504609

Spatioselective Electrochemical and Photoelectrochemical Functionalization of Silicon Microwires with Axial p/n Junctions

Adv Mater. 2016 Feb 17;28(7):1400-5. doi: 10.1002/adma.201504609. Epub 2015 Dec 3.

Authors

Alexander Milbrat^{1

2}, Rick Elbersen^{1

3}, Recep Kas², Roald M Tiggelaar^{3

4}, Han Gardeniers³, Guido Mul², Jurriaan Huskens¹

Affiliations

¹ Molecular Nanofabrication, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500, AE, Enschede, The Netherlands.
² Photocatalytic Synthesis, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500, AE, Enschede, The Netherlands.
³ Mesoscale Chemical Systems, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500, AE, Enschede, The Netherlands.
⁴ Nanolab, MESA+ Institute of Nanotechnology, University of Twente, P.O. Box 217, 7500, AE, The Netherlands.

PMID: 26866621
DOI: 10.1002/adma.201504609

Abstract

The spatioselective functionalization of silicon microwires with axial p/n junctions is achieved using the electronic properties of the junction. (Photo)electrochemical deposition of metals is demonstrated at the bottom and top of the wires in the dark and light, respectively. The junction depletion layer remains unmodified, which allows its visualization and comparison with theoretical calculations.

Keywords: axial junctions; depletion layers; electrodeposition; semiconductors; spatioselective functionalization.