pp. 2173-22183
S&M4049 Research Paper https://doi.org/10.18494/SAM5550 Published: June 10, 2025 Humidity-sensing Performance of Graphene/SnO₂ Nanocomposites [PDF] Zhen Zhu and Wang-De Lin (Received January 20, 2025; Accepted March 18, 2025) Keywords: humidity sensor, graphene/SnO2, nanocomposites
In this study, a series of humidity sensors based on graphene/SnO2 (Gr/SnO₂) nanocomposites with different proportions of the sensing material (10, 20, 30, 40, 50, and wt%) have been successfully fabricated by a simple method. The surface design, chemical structural information, and elemental variation of the prepared humidity sensors were investigated using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDXS) and transmission electron microscopy (TEM). By measuring the sensitivity, hysteresis, response characteristics of the humidity sensors, it was proved that the obtained 30 wt% Gr/SnO₂-based humidity sensor exhibited outstanding fast response/recovery speeds (28/140 s), small hysteresis (~5% RH), and high humidity sensitivity (S=80770) in the 12–90% RH range. Therefore, Gr/SnO₂ can be used as a potential material for real-time humidity-sensing applications.
Corresponding author: Wang-De Lin![]() ![]() This work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Zhen Zhu and Wang-De Lin, Humidity-sensing Performance of Graphene/SnO₂ Nanocomposites, Sens. Mater., Vol. 37, No. 6, 2025, p. 2173-22183. |