Characterizations of structural and optical properties of 2-(pyranoquinolin-4-yl) malononitrile

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

Thin films of 2-(pyranoquinolin-4-yl) malononitrile, PQM, are deposited by thermal evaporation technique. X-ray diffraction pattern of the powder and thin films with different thicknesses are investigated. Crystallite size, strain and dislocation are determined. Optical properties of PQM thin films are studied in wavelength range of 200–2500 nm using spectrophotometric measurements of transmittance and reflectance. The optical constants are calculated. Direct and indirect optical energy gaps of PQM thin films are estimated. Dispersion parameters as oscillator energy and dispersion energy are determined using single-oscillator model. The real and imaginary parts of dielectric constant show maxima at 1.24, 1.49, 2.75, 3.54 eV.

Original languageEnglish
Pages (from-to)671-678
Number of pages8
JournalOptik
Volume164
DOIs
Publication statusPublished - 1 Jul 2018

Fingerprint

malononitrile
Structural properties
Optical properties
optical properties
Thin films
thin films
oscillators
Optical constants
Thermal evaporation
Crystallite size
Powders
Diffraction patterns
transmittance
Energy gap
Permittivity
diffraction patterns
evaporation
permittivity
reflectance
X ray diffraction

Keywords

  • Dispersion parameters
  • Optical properties
  • Organic films

Cite this

@article{868d47937c784194909c6077e57393aa,
title = "Characterizations of structural and optical properties of 2-(pyranoquinolin-4-yl) malononitrile",
abstract = "Thin films of 2-(pyranoquinolin-4-yl) malononitrile, PQM, are deposited by thermal evaporation technique. X-ray diffraction pattern of the powder and thin films with different thicknesses are investigated. Crystallite size, strain and dislocation are determined. Optical properties of PQM thin films are studied in wavelength range of 200–2500 nm using spectrophotometric measurements of transmittance and reflectance. The optical constants are calculated. Direct and indirect optical energy gaps of PQM thin films are estimated. Dispersion parameters as oscillator energy and dispersion energy are determined using single-oscillator model. The real and imaginary parts of dielectric constant show maxima at 1.24, 1.49, 2.75, 3.54 eV.",
keywords = "Dispersion parameters, Optical properties, Organic films",
author = "Al-Harbi, {F. F.}",
year = "2018",
month = "7",
day = "1",
doi = "10.1016/j.ijleo.2018.03.056",
language = "English",
volume = "164",
pages = "671--678",
journal = "Optik",
issn = "0030-4026",
publisher = "Urban und Fischer Verlag Jena",

}

Characterizations of structural and optical properties of 2-(pyranoquinolin-4-yl) malononitrile. / Al-Harbi, F. F.

In: Optik, Vol. 164, 01.07.2018, p. 671-678.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Characterizations of structural and optical properties of 2-(pyranoquinolin-4-yl) malononitrile

AU - Al-Harbi, F. F.

PY - 2018/7/1

Y1 - 2018/7/1

N2 - Thin films of 2-(pyranoquinolin-4-yl) malononitrile, PQM, are deposited by thermal evaporation technique. X-ray diffraction pattern of the powder and thin films with different thicknesses are investigated. Crystallite size, strain and dislocation are determined. Optical properties of PQM thin films are studied in wavelength range of 200–2500 nm using spectrophotometric measurements of transmittance and reflectance. The optical constants are calculated. Direct and indirect optical energy gaps of PQM thin films are estimated. Dispersion parameters as oscillator energy and dispersion energy are determined using single-oscillator model. The real and imaginary parts of dielectric constant show maxima at 1.24, 1.49, 2.75, 3.54 eV.

AB - Thin films of 2-(pyranoquinolin-4-yl) malononitrile, PQM, are deposited by thermal evaporation technique. X-ray diffraction pattern of the powder and thin films with different thicknesses are investigated. Crystallite size, strain and dislocation are determined. Optical properties of PQM thin films are studied in wavelength range of 200–2500 nm using spectrophotometric measurements of transmittance and reflectance. The optical constants are calculated. Direct and indirect optical energy gaps of PQM thin films are estimated. Dispersion parameters as oscillator energy and dispersion energy are determined using single-oscillator model. The real and imaginary parts of dielectric constant show maxima at 1.24, 1.49, 2.75, 3.54 eV.

KW - Dispersion parameters

KW - Optical properties

KW - Organic films

UR - http://www.scopus.com/inward/record.url?scp=85044532191&partnerID=8YFLogxK

U2 - 10.1016/j.ijleo.2018.03.056

DO - 10.1016/j.ijleo.2018.03.056

M3 - Article

VL - 164

SP - 671

EP - 678

JO - Optik

JF - Optik

SN - 0030-4026

ER -