Abstract
The organization of nanowires on surfaces remains a major obstacle toward their large-scale integration into functional devices. Surface-material interactions have been used, with different materials and substrates, to guide horizontal nanowires during their growth into well-organized assemblies, but the only guided nanowire heterostructures reported so far are axial and not radial. Here, we demonstrate the guided growth of horizontal core-shell nanowires, specifically of ZnSe@ZnTe, with control over their crystal phase and crystallographic orientations. We exploit the directional control of the guided growth for the parallel production of multiple radial p-n heterojunctions and probe their optoelectronic properties. The devices exhibit a rectifying behavior with photovoltaic characteristics upon illumination. Guided nanowire heterostructures enable the bottom-up assembly of complex semiconductor structures with controlled electronic and optoelectronic properties.
| Original language | English |
|---|---|
| Pages (from-to) | 6155-6166 |
| Number of pages | 12 |
| Journal | ACS Nano |
| Volume | 11 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 27 Jun 2017 |
Funding
Israel Science Foundation [1493/10]; Minerva Stiftung [711138]; European Research Council (ERC) Advanced Grant [338849]; Helena and Martin Kimmel Center for Nanoscale Science; Moskowitz Center for Nano and Bio-Nano Imaging; Carolito Stiftung; "Programa Internacional de Becas "la Caixa"-Severo Ochoa"; Generalitat de Catalunya [SGR 1638]; Spanish MINECO Project e-TNT [MAT2014-59961-C2-2-R]; Severo Ochoa Program (MINECO) [SEV-2013-0295] This research was supported by the Israel Science Foundation 1493/10, Minerva Stiftung (Project No. 711138), European Research Council (ERC) Advanced Grant (No. 338849), Helena and Martin Kimmel Center for Nanoscale Science, Moskowitz Center for Nano and Bio-Nano Imaging, and the Carolito Stiftung. E.J. holds the Drake Family Professorial Chair of Nanotechnology. S.M.S. acknowledges funding from “Programa Internacional de Becas “la Caixa”-Severo Ochoa”. J.A. and S.M.S. acknowledge funding from Generalitat de Catalunya 2014 SGR 1638 and the Spanish MINECO Project e-TNT (MAT2014-59961-C2-2-R). ICN2 acknowledges support from the Severo Ochoa Program (MINECO, Grant SEV-2013-0295). Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD program. The HAADF-STEM microscopy was conducted in the Laboratorio de Microscopias Avanzadas at the Instituto de Nanociencia de Aragon-Universidad de Zaragoza. J.A. and S.M.S. thank them for offering access to their instruments and expertise.
All Science Journal Classification (ASJC) codes
- General Materials Science
- General Engineering
- General Physics and Astronomy