Optical and Electrical Properties of Homo and Heterojunction Formed by the ZnO/FTO and CuO/ZnO/FTO Nanostructures

Ghimire, R. R.; Pokhrel, B. P.; Gupta, S. P.; Joshi, L. P.; Rai, K. B.

doi:10.3126/jnphyssoc.v9i1.57600

Cited by 2 publications

(1 citation statement)

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“…The impact of NPs physicochemical features on their biological effects is widely well-known. Particularly, NPs size play a important role in dictating the biological behaviors of nanomaterials, pivotal in biomedical and biotechnological applications like cancer therapy [9], enzyme mobilization, Deoxyribonucleic acid (DNA) transfection [10], controlled drug release, gene delivery, photoluminescence [11,12], and as carriers for substances like indomethacin in solidstate dispersion. The utilization of silica NPs introduce potential human exposure sources.…”

Section: Introductionmentioning

confidence: 99%

Simulating and Analyzing the Electronic Structure of a Spherical Amorphous SiO2 Nanoparticle of Finite Radius

Dhakal,

Rai

2023

J. Nep. Phys. Soc.

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This study focuses on the electronic structure and properties of amorphous SiO2 nanoparticle with a radius of 18 Å using Density Functional Theory and the Orthogonalized Linear Combination of Atomic Orbital method. Through employing appropriate statistical techniques, three distinct models (I, II, and III) of amorphous SiO2 nanoparticle with an 18 Å radius are generated based on the continuous random network structure incorporating periodic boundaries. The calculated Total Density of States and Partial Density of States reveal insights into the electronic interactions within the nanoparticle. The band gap values are assessed at both less accurate and more accurate potentials such that the band gap increases from 2 eV to 4.2 eV with higher potentials for Model I, where surface atoms has dangling bonds stabilized by hydrogen atoms. Model II, consisting of all surface silicon atoms bonded to four oxygen atoms, exhibits a band gap of 1 eV, increasing to 1.8 eV with higher potentials. Model III, saturated with hydrogen atoms, shows a band gap of 4 eV, decreasing to 3.75 eV at higher potentials. The introduction of the more accurate potential serves to minimize the gap states initially observed with the less accurate potential. The electronic structure calculations provide crucial information for understanding the electronic interactions within the amorphous SiO2 nanoparticle with implications for their applications in various fields such as biomedicine, catalysis, electronics, and nanotechnology.

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