Tin Oxide (SnO2) Nanoparticles: Facile Fabrication, Characterization, and Application in UV Photodetectors

Abstract

Tin oxide (SnO2) 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, SnO2 NPs were facilely fabricated by calcination of tin (II) oxalate in air, followed by a liquid-phase exfoliation (LPE) method. Size-selected SnO2 NPs were easily obtained using a liquid cascade centrifugation (LCC) technique. The as-obtained SnO2 NPs displayed strong absorption in the UV region (~300 nm) and exhibited narrower absorption characteristics with a decrease in NP size. The as-fabricated SnO2 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 SnO2-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 SnO2 NPs with relatively larger size had better self-powered photoresponse performance. In addition, the as-fabricated SnO2-NP-based PEC photodetector exhibited strong cycling stability for on/off switching behavior under ambient conditions. It is anticipated that SnO2 nanostructures, as building blocks, can offer diverse availabilities for high-performance self-powered optoelectronic devices to realize a carbon-neutral or carbon-free environment.

MOF-Derived In2O3 Microrods for High-Performance Photoelectrochemical Ultraviolet Photodetectors

“…Three months later, I ph decreases to 28.83 μA, which maintains 82.6% of the initial value (34.92 μA/cm 2 ), revealing the good long-term stability of In 2 O 3 MR PEC PDs. The long-term stability of In 2 O 3 MR PEC PDs is better than most reported PEC PDs, such as SnO 2 nanoparticles (72.4% remaining after 1 month), BP nanosheets (17% remaining after 1 month), and Bi quantum dots (43% remaining after 1 month) . Moreover, In 2 O 3 MR PEC PDs still show valid switching behaviors after 90 days storage, further indicating their good long-term stability.…”

Morphological evolution driven semiconducting nanostructures for emerging solar, biological and nanogenerator applications

“…Tin oxide (SnO 2 ) exhibits a large band gap n-type semiconductor nature, which then makes it suitable for various technological applications in various fields, including infrared detectors, solid state gas sensors, photodetectors optical devices, and heat reflecting mirrors. 278–281 The piezoelectric properties of the pristine SnO 2 -based nanostructures are rarely reported. The SnO 2 nanostructures were recently reported as reinforcement materials to fabricate a piezoelectric nanocomposite nanogenerator.…”

“…Schematic image and output voltage from ZnO nanosheet-based nanogenerator (h) Measuredcurrent density of ZnO nanosheet-based nanogenerator. Reprinted with permission from ref.Tin Oxide (SnO 2 ) exhibits a large band gap n-type semiconductor nature which that make it suitable for various technological applications in various field including infrared detector, solid state gas sensors, photodetectors optical devices, and heat reflecting mirrors [278][279][280][281]. Piezoelectric properties of pristine SnO 2 based nanostructures are rarely reported.…”

“…[275][276][277] 5.2 Tin Oxide (SnO 2 ):PVDF and SnO 2 /ZnO-based piezoelectric nanogenerators Tin oxide (SnO 2 ) exhibits a large band gap n-type semiconductor nature, which then makes it suitable for various technological applications in various fields, including infrared detectors, solid state gas sensors, photodetectors optical devices, and heat reflecting mirrors [278][279][280][281]. The piezoelectric properties of the pristine SnO 2 -based nanostructures are rarely reported.…”

Emerging Xene-Related Nanostructures for Versatile Applications

“…This Special Issue compiles twelve articles dedicated to Xene-related nanostructures for versatile applications: ten research articles and two review articles. The papers present a variety of Xene-related nanostructures including two-dimensional (2D) black phosphorus (BP) nanosheets (NSs) [ 16 , 17 ], zero-dimensional (0D) bismuth (Bi) quantum dots (QDs) [ 18 ], one-dimensional (1D) telluride (Te) nanotubes (NTs) [ 19 ], 2D MXene [ 20 , 21 , 22 ], 0D graphdiyne (GDY) QDs [ 23 ], 2D selenium (Se) NSs [ 24 ], and other related nanostructures (2D WSe 2 NSs [ 25 ], CH 3 NH 3 PbBr 3 perovskite [ 26 ], and SnO 2 nanoparticles [ 27 ]) are also featured. These advanced nanostructures have been widely applied to versatile applications, such as lithium (Li)-Te batteries [ 19 ], solar cells [ 20 ], electromagnetic interference (EMI) shielding [ 21 ], hydrophobic and photothermal surfaces [ 24 ], dental materials [ 18 ], optical devices [ 16 , 23 , 25 ], sensors [ 22 , 26 ], etc.…”