Title :
Combustible gas detector based on γ-Fe2O3 semiconductor properties
Author :
Bodca, E. ; Telipan, Gabriela ; Blaga, Iuliu
Author_Institution :
R&D Inst. for Electr. Eng., Bucharest, Romania
Abstract :
The paper presents a combustible gas detector mode by thick film technology. Two gold wires were coiled on a cylindrical alumina substrate to form the measuring electrodes. A platinum wire was used to heat the device. The sensitive film was produced by a γ-Fe2 O3-TiO2 resistive ink. The device electrical resistance decreased from 1 MΩ in pure air to 100 kΩ in a 2000 ppm butane atmosphere for a working temperature of 300°C
Keywords :
electrical resistivity; gas sensors; iron compounds; thick film devices; γ-Fe2O3 semiconductor properties; γ-Fe2O3-TiO2 resistive ink; 100 kohm to 1 Mohm; 300 C; Al2O3; Au; Au wires; Fe2O3; Fe2O3-TiO2; Pt; Pt heating wire; TiO2; combustible gas detector; cylindrical alumina substrate; thick film technology; Electrical resistance measurement; Electrodes; Gas detectors; Gold; Ink; Paper technology; Platinum; Substrates; Thick films; Wires;
Conference_Titel :
Semiconductor Conference, 1996., International
Conference_Location :
Sinaia
Print_ISBN :
0-7803-3223-7
DOI :
10.1109/SMICND.1996.557321
