Effect of Cupric-Doped SrTiO 3 Films on Optical Properties Using Spectrophotometry Method

• Published in: IOP conference series. Earth and environmental science 2024-06, Vol.1359 (1), p.12015
• Main Authors: Santi, M A, Har, N P, Jenie, R P, Siskandar, R, Syafutra, H, Pratama, E, Negara, T P, Setiawan, A A, Alatas, H, Irzaman
• Format: Article
• Language: English
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1359/1/012015

Film Strontium Titanate (SrTiO 3 ) doping cupric (Cu 2+ ) with various concentrations (0%, 0.5%, and 1%) was successfully synthesized using the Chemical Solution Deposition (CSD) method. The films were deposited above the Si type-p (1 0 0) substrate in five layers using a spin-coating technique (3000 rpm, for 60 s) at a concentration of 2 M. The annealing process was held at 850 °C for 8 hours with a temperature increase rate of 1.67 °C/min for crystallization, and the optical properties were characterized using spectrophotometric methods. The results of FTIR with the Kramers-Kroning quantitative method showed a decrease in the wavenumber of the phonon vibration mode Transverse Optic (TO), Longitudinal Optic (LO), and the intersection of the real and imaginary dielectrics, which showed a red shift with increasing Cu concentration. The optical properties of SrTiO 3 films doped with Cu indicate their potential for applications in visible light photoconduction, such as light sensors.