Title :
Ethanol vapor sensors based on carboxyl- alkanethiolate self-assembled monolayers modified Au/GaAs Schottky diodes
Author :
Ping-Jia Lin ; Yen-I Chou ; Wen-Chau Liu ; Chieng-Chi Tung ; Chen, Huey-Ing
Author_Institution :
Dept. of Chem. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
Ethanol vapor sensors based on carboxyl-alkanethiolate self-assembled monolayers (SAMs) modified Au/GaAs Schottky diodes were fabricated in this work. The adsorption and arrangement of SAMs with different carbon number on the Au(111) surface were studied by using cyclic voltammetry (CV). Moreover, effects of ethanol vapor concentration and operating temperature on sensing performances were investigated.
Keywords :
III-V semiconductors; Schottky diodes; adsorption; gallium arsenide; gas sensors; gold; monolayers; organic compounds; self-assembly; voltammetry (chemical analysis); Au-GaAs; Schottky diodes; carboxyl-alkanethiolate self-assembled monolayers; cyclic voltammetry; ethanol vapor sensors; Chemical sensors; Electrodes; Ethanol; Gallium arsenide; Gold; Magnetic analysis; Nitrogen; Schottky diodes; Substrates; Testing;
Conference_Titel :
Sensors, 2009 IEEE
Conference_Location :
Christchurch
Print_ISBN :
978-1-4244-4548-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2009.5398563
