Chemical interactions of thiophene with ZnO and Al-doped ZnO thin films

In this study, ZnO and Al-doped ZnO films have been synthesized by five different deposition methods. Electrochemical measurements performed on films immersed in S-containing isooctane indicate that the texture and polarity of the surface of the films are key features affecting the adsorption of thiophene molecules. Specifically, ZnO films possessing a large amount of Zn-terminated (002) wurtzite surfaces are observed to be the most sensitive to the concentration of thiophene in isooctane.