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Sharifi Malvajerdi S, Abrari M, Karimi V, Shafiee M, Ghollamhosseini S, Taheri Ghahrizjani R, Ahmadi M, Wang D, Sun H, Soltanmohammadi M, Imani A, Ghanaatshoar M, Mohseni SM, Taghavinia N. High-Voltage, High-Current Electrical Switching Discharge Synthesis of ZnO Nanorods: A New Method toward Rapid and Highly Tunable Synthesis of Oxide Semiconductors in Open Air and Water for Optoelectronic Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46951-46966. [PMID: 34547200 DOI: 10.1021/acsami.1c08207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A novel method of oxide semiconductor nanoparticle synthesis is proposed based on high-voltage, high-current electrical switching discharge (HVHC-ESD). Through a subsecond discharge in the HVHC-ESD method, we successfully synthesized zinc oxide (ZnO) nanorods. Crystallography and optical and electrical analyses approve the high crystal-quality and outstanding optoelectronic characteristics of our synthesized ZnO. The HVHC-ESD method enables the synthesis of ZnO nanorods with ultraviolet (UV) and visible emissions. To demonstrate the effectiveness of our prepared materials, we also fabricated two UV photodetectors based on the ZnO nanorods synthesized using the subsecond HVHC-ESD method. The UV-photodetector test under dark and UV light irradiation also had a promising result with a linear ohmic current-voltage output. In addition to the HVHC-ESD method's excellent tunability for ZnO properties, this method enables the rapid synthesis of ZnO nanorods in open air and water. The results demonstrate the preparation, highlight the synthesis of fine hexagonal-shaped nanorods under a second with controlled oxygen vacancies, and point defects for a wide range of applications in less than a second.
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Affiliation(s)
| | - Masoud Abrari
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Vahid Karimi
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Mojtaba Shafiee
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Saeb Ghollamhosseini
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | | | - Morteza Ahmadi
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Danhao Wang
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Haiding Sun
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Mina Soltanmohammadi
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Aref Imani
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Majid Ghanaatshoar
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | | | - Nima Taghavinia
- Department of Physics, Sharif University of Technology, Tehran 11155-9161, Iran
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran 14588-89694, Iran
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Embrechts H, Hartmann M, Peukert W, Distaso M. In Situ Monitoring of Particle Formation with Spectroscopic and Analytical Techniques Under Solvothermal Conditions. Chem Eng Technol 2020. [DOI: 10.1002/ceat.201900520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Heidemarie Embrechts
- FAU Erlangen-NurembergInstitute of Particle Technology Cauerstrasse 4 91058 Erlangen Germany
- FAU Erlangen-NurembergInterdisciplinary Center for Functional Particle Systems Haberstrasse 9a 91058 Erlangen Germany
| | - Martin Hartmann
- FAU Erlangen-NurembergInterdisciplinary Center for Functional Particle Systems Haberstrasse 9a 91058 Erlangen Germany
- FAU Erlangen-NurembergErlangen Center for Interface Research and Catalysis (ECRC) Egerlandstrasse 3 91058 Erlangen Germany
| | - Wolfgang Peukert
- FAU Erlangen-NurembergInstitute of Particle Technology Cauerstrasse 4 91058 Erlangen Germany
- FAU Erlangen-NurembergInterdisciplinary Center for Functional Particle Systems Haberstrasse 9a 91058 Erlangen Germany
| | - Monica Distaso
- FAU Erlangen-NurembergInstitute of Particle Technology Cauerstrasse 4 91058 Erlangen Germany
- FAU Erlangen-NurembergInterdisciplinary Center for Functional Particle Systems Haberstrasse 9a 91058 Erlangen Germany
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Kocsis K, Niedermaier M, Kasparek V, Bernardi J, Redhammer G, Bockstedte M, Berger T, Diwald O. From Anhydrous Zinc Oxide Nanoparticle Powders to Aqueous Colloids: Impact of Water Condensation and Organic Salt Adsorption on Free Exciton Emission. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8741-8747. [PMID: 31244249 PMCID: PMC7116045 DOI: 10.1021/acs.langmuir.9b00656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Variations in the composition and structure of ZnO nanoparticle interfaces have a key influence on the materials' optoelectronic properties and are responsible for high number of discrepant results reported for ZnO-based nanomaterials. Here, we conduct a systematic study of the room-temperature photoluminescence of anhydrous ZnO nanocrystals, as synthesized in the gas phase and processed in water-free atmosphere, and of their colloidal derivatives in aqueous dispersions with varying amounts of organic salt admixtures. A free exciton band at hν = 3.3 eV is essentially absent in the anhydrous ZnO nanocrystal powders measured in vacuum or in oxygen atmosphere. Surface hydration of the nanoparticles during colloid formation leads to the emergence of the free exciton band at hν = 3.3 eV and induces a small but significant release in lattice strain as detected by X-ray diffraction. Most importantly, admixture of acetate or citrate ions to the aqueous colloidal dispersions not only allows for the control of the ζ-potential but also affects the intensity of the free exciton emission in a correlated manner. The buildup of negative charge at the solid-liquid interface, as produced by citrate adsorption, increases the free exciton emission. This effect is attributed to the suppression of electron trapping in the near-surface region, which counteracts nonradiative exciton recombination. Using well-defined ZnO nanoparticles as model systems for interface chemistry studies, our findings highlight water-induced key effects that depend on the composition of the aqueous solution shell around the semiconducting metal oxide nanoparticles.
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Affiliation(s)
- Krisztina Kocsis
- Department of Chemistry and Physics of Materials, University
of Salzburg, Jakob-Haringer-Strasse 2a, 5020 Salzburg, Austria
| | - Matthias Niedermaier
- Department of Chemistry and Physics of Materials, University
of Salzburg, Jakob-Haringer-Strasse 2a, 5020 Salzburg, Austria
| | - Vít Kasparek
- Central European Institute of Technology, Brno University of
Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Johannes Bernardi
- University Service Centre for Transmission Electron
Microscopy, Technische Universität Wien, 1040 Vienna, Austria
| | - Günther Redhammer
- Department of Chemistry and Physics of Materials, University
of Salzburg, Jakob-Haringer-Strasse 2a, 5020 Salzburg, Austria
| | - Michel Bockstedte
- Department of Chemistry and Physics of Materials, University
of Salzburg, Jakob-Haringer-Strasse 2a, 5020 Salzburg, Austria
| | - Thomas Berger
- Department of Chemistry and Physics of Materials, University
of Salzburg, Jakob-Haringer-Strasse 2a, 5020 Salzburg, Austria
| | - Oliver Diwald
- Department of Chemistry and Physics of Materials, University
of Salzburg, Jakob-Haringer-Strasse 2a, 5020 Salzburg, Austria
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