The effect of nanoparticle sizes on the structural, optical and electrical properties of indium sulfide thin films consisting of In2S3 and In6S7 phases
Yükleniyor...
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Indium sulfide thin films consisting of In2S3 and In6S7 phases were synthesized onto microscope glass substrates with different nanoparticle size using the chemical bath deposition method (CBD). Immediately after obtaining the films, they were annealed at 400°C for 1 h in reduced media in order to get better crystallization. The effect of nanoparticle sizes on the structural, compositional, optical, and electrical properties of the films was investigated. The films were characterized by x-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive x-ray spectrometry (EDS), UV–Vis spectroscopy and sheet resistivity measurements. The XRD spectra revealed the existence of both the cubic In2S3 and monoclinic In6S3 phases. From the SEM micrographs, the deposited films showed dense and good coverage of the surface with cracks. Moreover, nanoparticle sizes increased from 53 nm to 142 nm with increasing deposition time as well as film thickness. With an increase in nanoparticle size, the S/In ratio in the films decreased from 1.74 to 1.21 showing sulfur deficiency in the deposited films. The direct band gap (Eg) of the films decreased from 3.35 eV to 2.70 eV with increasing nanoparticle size. The sheet resistivity of the films decreased from 1.69 × 107Ω/Sq to 4.61 × 103Ω/Sq. The obtained results demonstrate that nanoparticle sizes effected the structural, compositional, optical and sheet resistivity of the films.
Açıklama
Anahtar Kelimeler
In2S3 and In6S7 thin films, Nanosized materials, Optical properties, Scanning electron microscopy, X-ray diffraction
Kaynak
Journal of Molecular Structure
WoS Q Değeri
Q3
Scopus Q Değeri
Q1
Cilt
1227
Sayı
Künye
Demir, R., Göde, F., Güneri, E. & Emen, F.M. (2021). The effect of nanoparticle sizes on the structural, optical and electrical properties of indium sulfide thin films consisting of In2S3 and In6S7 phases. Journal of Molecular Structure, 1227. https://doi.org/10.1016/j.molstruc.2020.129565
