Open AccessOptical Properties of Cu2O Thin Films Impregnated with Carbon Nanotube (CNT)
Author(s) -
Oluyamo Sunday Samuel,
Olanrewaju Ajanaku,
Adedayo Kayode David
Publication year - 2022
Publication title -
pertanika journal of science and technology
Language(s) - English
Resource type - Journals
eISSN - 2231-8526
pISSN - 0128-7680
DOI - 10.47836/pjst.30.1.19
Subject(s) - absorbance , materials science , carbon nanotube , doping , thin film , molar absorptivity , refractive index , band gap , absorption (acoustics) , substrate (aquarium) , fabrication , optoelectronics , nanotechnology , composite material , optics , medicine , oceanography , physics , alternative medicine , pathology , geology
This study investigates CNT-doped Cu2O thin film deposited by spray pyrolysis technique at a substrate temperature of 100°C. The samples were annealed at temperatures of 200°C and 230°C for 30 minutes. The effect of CNT doping on certain optical properties, such as extinction and absorption coefficients, a refractive index of doped Cu2O thin films were examined. The absorbance of the doped samples increases within the visible range and decreases in the ultraviolet range of the electromagnetic spectrum (EM). Both absorbance and extinction coefficients increased with temperature making the samples a good candidate for use as absorbance layer in device fabrication. In addition, there was an increase in direct bandgap with the increase in CNT concentration of the thin films. The result of the study revealed that CNT doping has a significant effect on the properties of Cu2O.