The effect of annealing temperature variation on the optical properties test of LiTaO3 thin films based on Tauc Plot method for satellite technology

3rd International Symposium on LAPAN-IPB Satellite For Food Security and Environmental Monitoring 2016

地球科学;轻工业;生态环境科学

Djohan, N.^1 ; Estrada, R.^1 ; Sari, D.^1 ; Dahrul, M.^2 ; Kurniawan, A.^2 ; Iskandar, J.^2 ; Hardhienata, H.^3 ; Irzaman^3

Department of Electrical Engineering, Faculty of Engineering and Computer Science, Krida Wacana Christian University, Jl. Tj. Duren Raya No. 4, Jakarta

11470, Indonesia^1

Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Jl. Raya Dramaga, Bogor

16680, Indonesia^2

Department of Physics, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Jl. Raya Dramaga, Bogor

16680, Indonesia^3

关键词: Annealing process;    Annealing temperatures;    Chemical solution deposition method;    Effect of annealing;    Indirect transition;    Light spectrum;    Satellite technology;    Si(111) substrate;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/54/1/012093/pdf
DOI  :  10.1088/1755-1315/54/1/012093

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The purpose of the present research is to observe the energy gap of thin films made from LiTaO3in 1 M-solubility deposited on n-type Si (111) substrates with annealing temperature variation. The manufacture of thin films has been formed by Chemical Solution Deposition (CSD) method using spin coater on 3000 rpm speed for 30 seconds and performed annealing process using furnace (Nabertherm type B180) at a temperature of 750°C, 800°C and 850°C for 15 hours. The absorbance of thin films is measured by using an Ocean Optics USB2000 device and processed into the energy gap curve using Tauc Plot method. The result shows that the energy gap of thin films associated with indirect transitions are increased from 2.78 eV to 2.93 eV with the rise of annealing temperature. The research shows that the thin films on n-type Si (111) substrates made of LiTaO3produces sensitivity to violet light spectrum and have the potential to be developed as a sensor on satellite technology.