TY - JOUR
T1 - Lithium Content and Low-Temperature Conductivity of NiO:Li Films Deposited by Spray Pyrolysis
AU - Garduño-Wilches, Ismael Arturo
AU - Rodríguez-Fernández, Luis
AU - Alonso, Juan Carlos
N1 - Publisher Copyright:
© 2015, The Minerals, Metals & Materials Society.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - The objective of this work was to quantify the amount of lithium incorporated into nickel oxide thin films and study its effects on the oxidation state of the elements and on the electrical conductivity of the films. A set of films was deposited on alumina substrate by spray pyrolysis. The lithium to nickel ratio in the sprayed solution, 0, 20, 40, and 60 at.%, determined the amount of lithium incorporated into the films. The lithium concentration was obtained by combined energy recoil detection analysis and Rutherford backscattering. The ratios of lithium to nickel atoms incorporated in the films were 0, 12.9, 27.9, and 46.9%, respectively. These results were confirmed by x-ray photoemission spectroscopy, which was also used to analyze the oxidation state of the atomic species in the samples. When the electrical conductivity of selected samples was studied as a function of temperature in the range 50–450 K, kinked–linear behavior was observed; this was attributed to different conducting mechanisms activated by temperature.
AB - The objective of this work was to quantify the amount of lithium incorporated into nickel oxide thin films and study its effects on the oxidation state of the elements and on the electrical conductivity of the films. A set of films was deposited on alumina substrate by spray pyrolysis. The lithium to nickel ratio in the sprayed solution, 0, 20, 40, and 60 at.%, determined the amount of lithium incorporated into the films. The lithium concentration was obtained by combined energy recoil detection analysis and Rutherford backscattering. The ratios of lithium to nickel atoms incorporated in the films were 0, 12.9, 27.9, and 46.9%, respectively. These results were confirmed by x-ray photoemission spectroscopy, which was also used to analyze the oxidation state of the atomic species in the samples. When the electrical conductivity of selected samples was studied as a function of temperature in the range 50–450 K, kinked–linear behavior was observed; this was attributed to different conducting mechanisms activated by temperature.
KW - Chemical composition
KW - lithium-doped
KW - nickel oxide
KW - resistive gas sensors
UR - http://www.scopus.com/inward/record.url?scp=84942818260&partnerID=8YFLogxK
U2 - 10.1007/s11664-015-3942-y
DO - 10.1007/s11664-015-3942-y
M3 - Artículo
SN - 0361-5235
VL - 44
SP - 4283
EP - 4289
JO - Journal of Electronic Materials
JF - Journal of Electronic Materials
IS - 11
ER -