Shao, F.Hernández Ramírez, FranciscoPrades García, Juan DanielFàbrega i Claveria, Ma. CarmeAndreu Arbella, TeresaMorante i Lleonart, Joan Ramon2016-11-032016-11-032014-08-310169-4332https://hdl.handle.net/2445/103228Copper (II) oxide (CuO) is a metal oxide suitable for developing solid state gas sensors. Nevertheless, a detailed insight into the chemical-to-electrical transduction mechanisms between gas molecules and this metal oxide is still limited. Here, individual CuO nanowires were evaluated as ammonia (NH3) and hydrogen sulphide (H2S) sensors, validating the p-type character of this semiconductor. The working principle behind their performance was qualitatively modeled and it was concluded that adsorbed oxygen at the surface plays a key role necessary to explain the experimental data. Compared to their counterparts of SnO2 nanowires, an appreciable sensitivity enhancement to NH3 for concentrations below 100 ppm was demonstrated.5 p.application/pdfeng(c) Elsevier B.V., 2014NanotecnologiaDetectors de gasosDetectors químicsNanotechnologyGas detectorsChemical detectorsinfo:eu-repo/semantics/article6445802016-11-03info:eu-repo/semantics/openAccess