Electrical Properties of Gd-and Mn-doped Fe2O3-LaFeO3-La2O3 Thick Films for Ethanol Gas Sensors
Gizella Mentari Putri(a), Muhamad Taufik Ulhakim(a), Andhy Setiawan(a), Dani Gustaman Syarif(b),Endi Suhendi(a*)

(a)Physics Study Program, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229 Bandung, Indonesia
*endis[at]upi.edu
(b)Center of Science and Technology of Applied Nuclear, National Nuclear Energy Agency of Indonesia (BATAN), Jl. Tamansari No. 71 Bandung, Indonesia

Abstract

Abstract. Herein, electrical properties of ethanol gas sensing based on Gd-and Mn-doped Fe2O3-LaFeO3-La2O3 thick films were investigated. The Gd-and Mn-doped Fe2O3-LaFeO3-La2O3 synthesized by coprecipitation method and formed to thick films using screen-printing techniques with sintering temperature at 900&deg-C. X-ray diffraction and scanning electron microscopy were conducted to determined the crystal and morphological structures. The results showed that the synthesized materials have three phase i.e. tetragonal, cubic, and hexagonal, respectively for Fe2O3-LaFeO3-La2O3. Also, the average particle size of about 0.51 µm. Among all those circumstances, synthesized materials indicates a good performances as ethanol gas sensing that showed in the electrical properties measurement. It tested in different ethanol containing i.e. 0 ppm, 100 ppm, 200 ppm, and 300 ppm. The highest response to ethanol gases was reached in 300 ppm, it is 332 with optimum temperature at 289&deg-C. We hoped our findings could be a good information and helped an perfect fabrication of ethanol gas sensors in the future.

Keywords: Gd-and Mn-doped Fe2O3-LaFeO3-La2O3- Thick Films- Ethanol gas sensors

Topic: Physics