Sensing properties of assembled Bi2S3 nanowire arrays

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Kunakova, Gunta
Meija, Raimonds
Bite, I.
Kosmaca, Jelena
Varghese, Justin M.
Prikulis, Juris
Erts, Donats
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Bismuth sulfide (Bi2S3) nanowires were grown in porous aluminium oxide template and a selective chemical etching was applied to transfer the nanowires to a solution. Well aligned nanowire arrays were assembled on pre-patterned silicon substrates employing dielectrophoresis. Electron beam lithography was used to connect aligned individual nanowires to the common macroelectrode. In order to evaluate the conductometric sensing performance of the Bi2S3 nanowires, current–voltage characteristics were measured at different relative humidity (RH) levels (5–80%) / argon medium. The response of the Bi2S3 nanowires depending of RH is found to be considerably different from those reported for other types of nanowire RH sensor devices.
Bismuth Sulphide , Nanowire array , Conductometric response , Relative humidity
Kunakova, G., Meija, R., Bite, I., Prikulis, J., Kosmaca, J., Varghese, J., Holmes, J. D. and Donats, E. (2015) 'Sensing properties of assembled Bi 2 S 3 nanowire arrays', Physica Scripta, 90(9), 094017 (4 pp). doi: 10.1088/0031-8949/90/9/094017
© 2015 The Royal Swedish Academy of Sciences. This is an author-created, un-copyedited version of an article accepted for publication in Physica Scripta. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at