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Tin Oxide $(SnO_{2}$) Nanoparticles: Facile Fabrication, Characterization, and Application in UV Photodetectors
| Content Provider | MDPI |
|---|---|
| Author | Huang, Zhenping Zhu, Jun Hu, Yi Zhu, Yueping Zhu, Guanghua Hu, Lanping Zi, You Huang, Weichun |
| Copyright Year | 2022 |
| Description | Tin oxide $(SnO_{2}$) nanomaterials are of great interest in many fields such as catalytic, electrochemical, and biomedical applications, due to their low cost, suitable stability characteristics, high photosensitivity, etc. In this contribution, $SnO_{2}$ NPs were facilely fabricated by calcination of tin (II) oxalate in air, followed by a liquid-phase exfoliation (LPE) method. Size-selected $SnO_{2}$ NPs were easily obtained using a liquid cascade centrifugation (LCC) technique. The as-obtained $SnO_{2}$ NPs displayed strong absorption in the UV region (~300 nm) and exhibited narrower absorption characteristics with a decrease in NP size. The as-fabricated $SnO_{2}$ NPs were, for the first time, directly deposited onto a poly(ethylene terephthalate) (PET) film with a regular Ag lattice to fabricate a flexible working electrode for a photoelectrochemical (PEC)-type photodetector. The results demonstrated that the $SnO_{2}$-NP-based electrode showed the strongest photoresponse signal in an alkaline electrolyte compared with those in neutral and acidic electrolytes. The maximum photocurrent density reached 14.0 μA $cm^{−2}$, significantly outperforming black phosphorus nanosheets and black phosphorus analogue nanomaterials such as tin (II) sulfide nanosheets and tellurene. The as-fabricated $SnO_{2}$ NPs with relatively larger size had better self-powered photoresponse performance. In addition, the as-fabricated $SnO_{2}$-NP-based PEC photodetector exhibited strong cycling stability for on/off switching behavior under ambient conditions. It is anticipated that $SnO_{2}$ nanostructures, as building blocks, can offer diverse availabilities for high-performance self-powered optoelectronic devices to realize a carbon-neutral or carbon-free environment. |
| Starting Page | 632 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano12040632 |
| Journal | Nanomaterials |
| Issue Number | 4 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-02-14 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Inorganic Chemistry Tin Oxide Metal Oxide Calcination Photodetection |
| Content Type | Text |
| Resource Type | Article |
