Disorder - Induced Characteristics Based on Optical Absorption of SiO2/rGO - Like Carbon Films

F. Faridawati; Sudarsono; Ahmad Sholih; Gatut Yudoyono

doi:10.4028/p-WBgdU2

Disorder - Induced Characteristics Based on Optical Absorption of SiO₂/rGO - Like Carbon Films

F. Faridawati^*, Sudarsono, Ahmad Sholih, Gatut Yudoyono, Darminto

^*Corresponding author for this work

Institut Teknologi Sepuluh Nopember

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

The purpose of this research is to study the interrelation between Urbach energy (E_u), optical band gap energy (E_g), and complex dielectric constant (ε) in relation to the disorder induced properties of SiO₂/rGO thin films. The rGO-like carbon was created by annealing coconut shell carbon (csc) at different temperatures of 400oC, 600 oC, and 800 oC. From the analyses, it obtained E_g which was varied from 2.01 eV until 2.67 eV. While E_u from 0.13 eV until 0.26 eV. The results showed that the E_u varied inversely to the E_g. The Penn model and hydrogen-like atom model theories were used to investigate the interrelation between E_u and ε. Finally, it is shown that the Urbach energy is linearly and inversely related to the imaginary and real parts of dielectic constant, respectively.

Original language	English
Title of host publication	Materials Science Forum
Publisher	Trans Tech Publications Ltd
Pages	99-104
Number of pages	6
DOIs	https://doi.org/10.4028/p-WBgdU2
Publication status	Published - 2023

Publication series

Name	Materials Science Forum
Volume	1094
ISSN (Print)	0255-5476
ISSN (Electronic)	1662-9752

Keywords

Absorption spectroscopy
Dielectric constant
Optical band gap energy
Urbach energy

Access to Document

10.4028/p-WBgdU2

Cite this

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title = "Disorder - Induced Characteristics Based on Optical Absorption of SiO2/rGO - Like Carbon Films",

abstract = "The purpose of this research is to study the interrelation between Urbach energy (Eu), optical band gap energy (Eg), and complex dielectric constant (ε) in relation to the disorder induced properties of SiO2/rGO thin films. The rGO-like carbon was created by annealing coconut shell carbon (csc) at different temperatures of 400oC, 600 oC, and 800 oC. From the analyses, it obtained Eg which was varied from 2.01 eV until 2.67 eV. While Eu from 0.13 eV until 0.26 eV. The results showed that the Eu varied inversely to the Eg. The Penn model and hydrogen-like atom model theories were used to investigate the interrelation between Eu and ε. Finally, it is shown that the Urbach energy is linearly and inversely related to the imaginary and real parts of dielectic constant, respectively.",

keywords = "Absorption spectroscopy, Dielectric constant, Optical band gap energy, Urbach energy",

author = "F. Faridawati and Sudarsono and Ahmad Sholih and Gatut Yudoyono and Darminto",

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doi = "10.4028/p-WBgdU2",

language = "English",

series = "Materials Science Forum",

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T1 - Disorder - Induced Characteristics Based on Optical Absorption of SiO2/rGO - Like Carbon Films

AU - Faridawati, F.

AU - Sudarsono,

AU - Sholih, Ahmad

AU - Yudoyono, Gatut

AU - Darminto,

PY - 2023

Y1 - 2023

N2 - The purpose of this research is to study the interrelation between Urbach energy (Eu), optical band gap energy (Eg), and complex dielectric constant (ε) in relation to the disorder induced properties of SiO2/rGO thin films. The rGO-like carbon was created by annealing coconut shell carbon (csc) at different temperatures of 400oC, 600 oC, and 800 oC. From the analyses, it obtained Eg which was varied from 2.01 eV until 2.67 eV. While Eu from 0.13 eV until 0.26 eV. The results showed that the Eu varied inversely to the Eg. The Penn model and hydrogen-like atom model theories were used to investigate the interrelation between Eu and ε. Finally, it is shown that the Urbach energy is linearly and inversely related to the imaginary and real parts of dielectic constant, respectively.

AB - The purpose of this research is to study the interrelation between Urbach energy (Eu), optical band gap energy (Eg), and complex dielectric constant (ε) in relation to the disorder induced properties of SiO2/rGO thin films. The rGO-like carbon was created by annealing coconut shell carbon (csc) at different temperatures of 400oC, 600 oC, and 800 oC. From the analyses, it obtained Eg which was varied from 2.01 eV until 2.67 eV. While Eu from 0.13 eV until 0.26 eV. The results showed that the Eu varied inversely to the Eg. The Penn model and hydrogen-like atom model theories were used to investigate the interrelation between Eu and ε. Finally, it is shown that the Urbach energy is linearly and inversely related to the imaginary and real parts of dielectic constant, respectively.

KW - Absorption spectroscopy

KW - Dielectric constant

KW - Optical band gap energy

KW - Urbach energy

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