Synthesis, Characterization, and Optical Properties of In₂O₃ Semiconductor Nanowires

Abstract

In2O3 semiconductor nanowires were synthesized by the chemical vapor deposition method through carbon thermal reduction at 900 °C with 95% Ar and 5% O2 gas flow. The In2O3 nanowires were characterized by field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HRTEM), and photoluminescence spectroscopy (PL). For the first time, we observed the formation of corundum-type h-In2O3 nanowires and branched In2O3 nanowires. The PL spectra of In2O3 nanowires show strong visible red emission at 1.85 eV (670 nm) at low temperature, possibly caused by a small amount of oxygen vacancies in the nanowire crystal structure.

Assembly and Electronic Applications of Colloidal Nanomaterials

“…Based on the growth conditions, nanocrystals can also dynamically attach to each other in a highly oriented fashion or recrystallize to form complicated shapes. Examples include monodisperse II-VI or IV-VI metal chalcogenide nanocrystals, such as CdX [83][84][85][86] or PbX [87][88][89][90][91][92] (X = S, Se, Te), III-V metal pnictide nanocrystals, such as InP or InAs, [93][94][95][96] and metal oxides, such as TiO 2 , [97,98] In 2 O 3 , [99,100] ZnO, [101,102] or FeO x . [3,5,58,59,61,65] Diverse noble-metal nanocrystals including Au, [66,67] Ag, [68,69] Pt, [70,71] and Pd, [72,73] have been synthesized by reducing metal ions in the presence of stabilizing agents in organic or aqueous solutions.…”

Synthesis of In2o3 Nanowires for the Application of LPG Sensor

“…Because of these properties it has its application in sensors and detectors [3][4][5][6]. There are different techniques for fabricating one dimensional In2O3 nanostructure, they are thermal evaporation [7][8], pulse laser ablation [9], chemical vapour deposition [10], sputtering [11], vapour liquid solid condensation [12], atomic vapour deposition [13]. The main disadvantage with the above mentioned techniques is that the nanostructures obtained are not perpendicularly grown on the substrate.…”

Effect of europium content on physical properties of In2O3 thin films for sensitivity and optoelectronic applications

“…Indium oxides (In 2 O 3 ) have particular optical and electronic properties [1][2][3] which can be of interest for electronic and optoelectronic devices [4,5]. They are also important in selective oxidation catalysis [6][7][8].…”