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A room temperature ethanol sensor made from p-type Sb-doped SnO2 nanowires
1Department of Materials Science and Engineering, Feng Chia University, Seatwen, Taichung, Taiwan. jmwu@fcu.edu.tw
Abstract:
A p-type ethanol sensor with a response time of approximately 8.3 s at room temperature was produced by SnO(2):Sb nanowires. The electrical properties of p-type SnO(2) nanowires are stable with a hole concentration of 1.544 x 10(17) cm(-3) and a field-effect mobility of 22 cm(2) V(-2) S(-1). X-ray photoelectron spectroscopy (XPS) and Hall measurement revealed that as-synthesized nanowires exhibit p-type behavior. A comprehensive investigation of the p-type sensing mechanism is reported.
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