Synthesis, Structure, Photoluminescence, and Raman Spectrum of Indium Oxide Nanowires

Kim, Heung-Soo; Na, H.G.; Yang, Juchan; Lee, C.

doi:10.12693/aphyspola.119.143

Cited by 27 publications

(12 citation statements)

References 6 publications

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“…The Raman peaks at ≈115 and ≈211 cm −1 can be assigned to the E g and A 1g Raman peaks of trigonal SnO (Figure a) . On the other hand, the low frequency Raman peak lines at ≈109 cm −1 belong to the vibrational modes of cubic In 2 O 3 , while the ones at 231 cm −1 can be ascribed to the typical E g mode of cubic In 2 O 3 (Figure a) . Moreover, Raman line spectra along the heterostructure shows homogeneity of both materials (Figure S4, Supporting Information).…”

mentioning

confidence: 93%

2D SnO/In₂O₃ van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

Alsaif

Kuriakose

Walia

et al. 2019

Adv Materials Inter

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COMMUNICATION (1 of 8)deployed in the form of van der Waals (vdW) heterostructures that enable fascinating coupled properties from stacked individual layers of 2D sheets which can be exploited in several applications, [2,6,7] including tunneling transistors, [8] quantum hall systems, [9] electrochemical hydrogen evolution reaction, [10] optoelectronics, [4,11] and electronics. [3,12] The p-n junctions are the building blocks of the semiconductor industry, in which the p-n junction heterostructures made from ultrathin materials are of great interest in specialized electronics, optoelectronics, and photonics due to their intriguing coupled properties of the different crystals. [5][6][7]13] Several methods for exfoliation and/or deposition exist such as chemical vapor deposition (CVD), [7] pulsed laser deposition (PLD), [14] molecular beam epitaxy (MBE), [15] pick-and-lift vdW technique, [16] and mechanical exfoliation. [17] These conventional approaches are time consuming and require complicated fabrication processes, [18] yet resulting in devices with small effective areas. [19] Liquid metals are emerging materials which can be used in microfluidics components, [20] sensors, [21] electrodes, [22] phototransistors, [23] flexible and stretchable devices, [24] disease treatment, [22] biomedical field, [22] and in synthesis of low-dimensional materials. [25] Liquid metals have been shown to form a naturally occurring atomically thin layer of oxide at their interface with air, [26][27][28][29] and using liquid metal as a reaction solvent can give access to a sizable portion of oxide elements including oxides which are intrinsically nonlayered crystals. [26] The exfoliated oxides can be converted to sulfides and phosphates. [30] Combination of these atomically thin layers should provide a vast number of vdW heterostructures that are yet to be explored.In this work, atomically thin oxide skin of low melting point liquid metals of tin and indium including p-type tin oxide (SnO) [27] and n-type indium oxide (In 2 O 3 ) [31] are stacked to produce large-area heterostructures with a high degree of homogeneity. Indeed, the p-n vdW heterojunctions feature current rectification properties with exceptionally fast photoresponse times and high sensitivity for UV light. The demonstrated liquid metal synthesis framework offers the possibility of synthesizing and exploring a range of tailored heterostructures for applications in next-generation optoelectronic and photodetection devices.

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confidence: 93%

2D SnO/In₂O₃ van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

Alsaif

Kuriakose

Walia

et al. 2019

Adv Materials Inter

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“…All intense peaks in the spectrum can be well indexed to cubic In 2 O 3 (JCPDS Card No. 06-0416, space group Ia3 (206), a = 10.118 Å) ( Kim et al, 2011 ; Prasad et al, 2021 ).…”

Section: Resultsmentioning

confidence: 99%

Ag Functionalized In2O3 Derived From MIL-68(In) as an Efficient Electrochemical Glucose Sensor

et al. 2022

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In this study, Ag@In2O3 modified nickel foam (NF) was reported for its role as a non-enzymatic glucose sensor. Ag@In2O3 was prepared by a simple two-step method; preparation of a metal-organic framework (MOF) MIL-68(In) by solvothermal method, entrapment of Ag + by adding AgNO3 then drying it for 2 h to complete the entrapment process and subsequent calcination at 650°C for 3 h. The Ag@In2O3 modified NF was employed as a non-enzymatic glucose sensor to determine glucose concentrations in an alkaline medium. Two linear ranges were obtained from Ag@In2O3 modified electrode, i.e., 10 μM to 0.8 mM and 0.8–2.16 mM with a sensitivity of 3.31 mA mM−1 cm−2 and 1.51 mA mM−1 cm−2 respectively, with a detection limit of 0.49 µM. Ag@In2O3 modified NF exhibited high selectivity for glucose, among other interfering agents.

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“…These oxygens vacancies promote intermediate energy levels in the slot region providing a decrease in the gap band, favoring the phenomenon photoluminescence [28]. Kim et al revealed nanostructures with high aspect ratio will favor the generation and existence of large quantities of oxygen vacancies [32]. According to Desai the PL emission from TiO 2 can be attributed to the recombination, because in TiO 2 , e − /h + recombination may be grouped in two categories: (i) volume recombination-dominate in well crystalline larger size TiO2, and (ii) surface recombination-dominate in smaller size particles due to large surface area to volume ration and large number of surface active sites [33].…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic activity and photoluminescence properties of TiO2, In2O3, TiO2/In2O3 thin films multilayer

Garcia

Tavares

Neto

et al. 2018

J Mater Sci: Mater Electron

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This study evaluated the effect of crystallization temperature (300, 500 and 700 °C) on the photocatalytic and photoluminescent properties of the multilayer thin films of TiO 2 , In 2 O 3 and TiO 2 /In 2 O 3 which were prepared by the Complex Polymerization Method (CPM) and deposited on substrates of Si (100) by the spin coating method. The results of X-ray diffraction (XRD) revealed that there was no chemical interaction between the oxides (TiO 2 /In 2 O 3 ) in crystalline films. The morphology was observed by atomic force microscopy (AFM) with a mean grain size of 15-35 nm. The result showed that the photocatalytic property is significantly increased by increasing the crystallization temperature. This is due to the agitation of the molecules which facilitates the transfer of charge between the electron and the catalyst bore. UV-vis light absorption spectra indicated that the addition of In 2 O 3 in TiO 2 films is an effective way of increasing the uptake of TiO 2 in the visible region up to ~ 600 nm for photocatalytic applications, it was also possible to observe that these films could be easily Recycled for reuse. The samples were also characterized by photoluminescence, where it was possible to observe that the reduction of the PL intensity increased the photocatalytic activity of the thin films, with the increase of the crystallization temperature. In addition, the method used in this study is simple and economical compared to other methods.

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Synthesis, Structure, Photoluminescence, and Raman Spectrum of Indium Oxide Nanowires

Cited by 27 publications

References 6 publications

2D SnO/In₂O₃ van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

2D SnO/In₂O₃ van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

Ag Functionalized In2O3 Derived From MIL-68(In) as an Efficient Electrochemical Glucose Sensor

Photocatalytic activity and photoluminescence properties of TiO2, In2O3, TiO2/In2O3 thin films multilayer

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Synthesis, Structure, Photoluminescence, and Raman Spectrum of Indium Oxide Nanowires

Cited by 27 publications

References 6 publications

2D SnO/In2O3 van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

2D SnO/In2O3 van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

Ag Functionalized In2O3 Derived From MIL-68(In) as an Efficient Electrochemical Glucose Sensor

Photocatalytic activity and photoluminescence properties of TiO2, In2O3, TiO2/In2O3 thin films multilayer

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2D SnO/In₂O₃ van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals

2D SnO/In₂O₃ van der Waals Heterostructure Photodetector Based on Printed Oxide Skin of Liquid Metals