Opto-mechano-electrical tripling in ZnO nanowires probed by photocurrent spectroscopy in a high-resolution transmission electron microscope
Creators
- 1. Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1, Tsukuba, Ibaraki 3058577 (Japan)
- 2. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 3050044 (Japan)
- 3. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
- 4. National University of Science and Technology, MISIS, Leninskiy Prospect 4, Moscow 119049 (Russian Federation)
- 5. Moscow Institute of Physics and Technology, Institutsky Lane 9, Dolgoprudny 141700 (Russian Federation)
Description
Photocurrent spectroscopy of individual free-standing ZnO nanowires inside a high-resolution transmission electron microscope (TEM) is reported. By using specially designed optical in situ TEM system capable of scanning tunneling microscopy probing paired with light illumination, opto-mechano-electrical tripling phenomenon in ZnO nanowires is demonstrated. Splitting of photocurrent spectra at around 3.3 eV under in situ TEM bending of ZnO nanowires directly corresponds to nanowire deformation and appearance of expanded and compressed nanowire sides. Theoretical simulation of a bent ZnO nanowire has an excellent agreement with the experimental data. The splitting effect could be explained by a change in the valence band structure of ZnO nanowires due to a lattice strain. The strain-induced splitting provides important clues for future flexible piezo-phototronics
Additional details
Identifiers
- DOI
- 10.1063/1.4929812;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 107
- Journal Issue
- 9
- Journal Page Range
- p. 091103-091103.4
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 47059250
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- BENDING; DESIGN; EV RANGE 01-10; ILLUMINANCE; NANOWIRES; RESOLUTION; SCANNING TUNNELING MICROSCOPY; SIMULATION; SPECTRA; SPECTROSCOPY; STRAINS; TRANSMISSION ELECTRON MICROSCOPY; VALENCE; ZINC OXIDES
- Descriptors DEC
- CHALCOGENIDES; DEFORMATION; ELECTRON MICROSCOPY; ENERGY RANGE; EV RANGE; MICROSCOPY; NANOSTRUCTURES; OXIDES; OXYGEN COMPOUNDS; ZINC COMPOUNDS
Optional Information
- Notes
- (c) 2015 AIP Publishing LLC